Evaluation Study of the Online High School Media Aware Program

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to use protection (if you were to have vaginal sex, how likely would you be to use birth control other than condoms?). (adapted from Jemmott and Jemmott, 1991)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to use protection (if you were to have vaginal sex, how likely would you be to use birth control other than condoms?). (adapted from Jemmott and Jemmott, 1991)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to use protection (if you were to have vaginal or anal sex, how likely would you be to use a condom?). (adapted from Jemmott and Jemmott, 1991)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to use protection (if you were to have vaginal or anal sex, how likely would you be to use a condom?). (adapted from Jemmott and Jemmott, 1991)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to engage in sexual activity in the next year (How likely is that you will have any type of sexual contact with another person (oral sex, anal sex, vaginal sex, or genital-to-genital contact) in the next year?). α = 0.77 (adapted from L'Engle, Brown, and Kenneavy, 2006)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to engage in sexual activity in the next year (How likely is that you will have any type of sexual contact with another person (oral sex, anal sex, vaginal sex, or genital-to-genital contact) in the next year?). α = 0.77 (adapted from L'Engle, Brown, and Kenneavy, 2006)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to use protection (if you were to decide to have oral sex, how likely would you be to use a condom or dental dam?). (adapted from Jemmott and Jemmott, 1991)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to use protection (if you were to decide to have oral sex, how likely would you be to use a condom or dental dam?). (adapted from Jemmott and Jemmott, 1991)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=very unwilling; 2=unwilling; 3=willing; 4=very willing) how willing they are to engage in unprotected sex (Imagine you were with a boyfriend/girlfriend. They want to have sex, but neither of you have any form of protection. In this situation, how willing would you be to go ahead and have sex anyway?). (adapted from Gibbons, Gerrard, Blanton, & Russell, 2014)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=very unwilling; 2=unwilling; 3=willing; 4=very willing) how willing they are to engage in unprotected sex (Imagine you were with a boyfriend/girlfriend. They want to have sex, but neither of you have any form of protection. In this situation, how willing would you be to go ahead and have sex anyway?). (adapted from Gibbons, Gerrard, Blanton, & Russell, 2014)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=very unwilling; 2=unwilling; 3=willing; 4=very willing) how willing they are to have sex in a relationship context. (Imagine you were with a boyfriend/girlfriend and they say they love you. They want to have sex. In this situation, how willing would you be to have sex?).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=very unwilling; 2=unwilling; 3=willing; 4=very willing) how willing they are to have sex in a relationship context. (Imagine you were with a boyfriend/girlfriend and they say they love you. They want to have sex. In this situation, how willing would you be to have sex?).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=very unwilling; 2=unwilling; 3=willing; 4=very willing) how willing they are to have hook up even if they are not sure that they really want to (Imagine you were with a boyfriend/girlfriend. They want to hook-up, but you are not sure that you want to. In this situation, how willing would you be to go ahead and hook-up anyway?). (adapted from Gibbons, Gerrard, Blanton, & Russell, 2014)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=very unwilling; 2=unwilling; 3=willing; 4=very willing) how willing they are to have hook up even if they are not sure that they really want to (Imagine you were with a boyfriend/girlfriend. They want to hook-up, but you are not sure that you want to. In this situation, how willing would you be to go ahead and hook-up anyway?). (adapted from Gibbons, Gerrard, Blanton, & Russell, 2014)

Time frame: posttest (approximately one week after pretest)

Participants are asked to indicate on a 4-point Likert scale (1=strongly 2=disagree; 3=disagree; 4=agree; strongly agree) their level of agreement on several items pertaining to dating violence (e.g., It is okay for people to hit their girlfriends/boyfriends if they did something to make them mad.). (adapted from Foshee, Bauman, Ennett, Suchindran, Benefield, and Linder, 2005 α=0.73)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly 2=disagree; 3=disagree; 4=agree; strongly agree) their level of agreement on several items pertaining to dating violence (e.g., It is okay for people to hit their girlfriends/boyfriends if they did something to make them mad.). (adapted from Foshee, Bauman, Ennett, Suchindran, Benefield, and Linder, 2005 α=0.73)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) their level of agreement on several items pertaining to myths about rape (e.g., It shouldn't be considered rape if a guy is drunk and didn't realize what he was doing.). (adapted from Illinois Rape Myth Acceptance-Short Form (IRMA-SF; 7 pt. scale); Payne et al., (1999); McMahon & Farmer (2011), α=0.88)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) their level of agreement on several items pertaining to myths about rape (e.g., It shouldn't be considered rape if a guy is drunk and didn't realize what he was doing.). (adapted from Illinois Rape Myth Acceptance-Short Form (IRMA-SF; 7 pt. scale); Payne et al., (1999); McMahon & Farmer (2011), α=0.88)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) their level of agreement on several items pertaining to strict gender role stereotypes (e.g., Raising children is primarily a woman's responsibility.). (adapted from Foshee, Bauman, Ennett, Suchindran, Benefield, and Linder, 2005 α=0.87)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) their level of agreement on several items pertaining to strict gender role stereotypes (e.g., Raising children is primarily a woman's responsibility.). (adapted from Foshee, Bauman, Ennett, Suchindran, Benefield, and Linder, 2005 α=0.87)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are shown an advertisement and asked to describe it in detail including noting marketing strategies and any missing information (e.g., How are advertisers trying to get someone to buy this product?). Qualitative responses to the questions are coded by trained project staff members once inter-coder reliability is established, and scores will be summed to create an overall deconstruction skills composite variable (adapted from Kupersmidt, Scull, & Benson, 2012).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are shown an advertisement and asked to describe it in detail including noting marketing strategies and any missing information (e.g., How are advertisers trying to get someone to buy this product?). Qualitative responses to the questions are coded by trained project staff members once inter-coder reliability is established, and scores will be summed to create an overall deconstruction skills composite variable. (adapted from Kupersmidt, Scull, & Benson, 2012)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (1=not much at all; 2=a little; 3=a good amount; 4=a lot) the extent to which they: 1) thought about the ad; 2) spent time thinking about the ad; and 3) paid attention to the ad. (adapted from Shiv, Britton, and Payne, 2004)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (1=not much at all; 2=a little; 3=a good amount; 4=a lot) the extent to which they: 1) thought about the ad; 2) spent time thinking about the ad; and 3) paid attention to the ad. (adapted from Shiv, Britton, and Payne, 2004)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked on a 4-point Likert scale (1never; 2=rarely; 3=sometimes; 4=often) about their frequency of sexual health communication with a boyfriend/girlfriend (e.g., How often do you talk with your boyfriend/girlfriend about sexual health?).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked on a 4-point Likert scale (1never; 2=rarely; 3=sometimes; 4=often) about their frequency of sexual health communication with a boyfriend/girlfriend (e.g., How often do you talk with your boyfriend/girlfriend about sexual health?).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked on a 4-point Likert scale (1never; 2=rarely; 3=sometimes; 4=often) about their frequency of sexual health communication with a doctor or other health professional (e.g., How often do you talk with a doctor or other health professional about sexual health?).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked on a 4-point Likert scale (1never; 2=rarely; 3=sometimes; 4=often) about their frequency of sexual health communication with a doctor or other health professional (e.g., How often do you talk with a doctor or other health professional about sexual health?).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked on a 4-point Likert scale (1never; 2=rarely; 3=sometimes; 4=often) about their frequency of sexual health communication with a doctor or trusted adult (e.g., How often do you talk with a parent or other trusted professional about sexual health?).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked on a 4-point Likert scale (1never; 2=rarely; 3=sometimes; 4=often) about their frequency of sexual health communication with a doctor or trusted adult (e.g., How often do you talk with a parent or other trusted professional about sexual health?).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens communicate with parents, health providers, or another trusted adult (e.g., Before deciding to have sex, what percentage of teens talk with their boy/girlfriend about sexual health?). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens communicate with parents, health providers, or another trusted adult (e.g., Before deciding to have sex, what percentage of teens talk with their boy/girlfriend about sexual health?). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens use contraception (e.g., What percentage of teens who have oral sex use a condom or a dental dam?). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens use contraception (e.g., What percentage of teens who have oral sex use a condom or a dental dam?). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens engage in risky sexual activities (e.g., What percentage of teens have sex with someone who is much older?). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens engage in risky sexual activities (e.g., What percentage of teens have sex with someone who is much older?). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens engage in sexual activity (e.g., oral sex, vaginal sex, anal sex). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate what percentage \[0% = no teens; 100% = all teens\] of teens engage in sexual activity (e.g., oral sex, vaginal sex, anal sex). (adapted from Scull, Kupersmidt, Malik, and Keefe, 2018)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) how effectively they could communicate with others about sexual health (e.g., I could talk with a boy/girlfriend about using condoms for sexually transmitted infection protection.). (adapted from Scull, Malik, & Kupersmidt, 2014)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) how effectively they could communicate with others about sexual health (e.g., I could talk with a boy/girlfriend about using condoms for sexually transmitted infection protection.). (adapted from Scull, Malik, & Kupersmidt, 2014)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a scale of 0 (Can't do) to 100 (Very Certain) their degree of confidence in several behaviors (e.g., I could talk to a friend who I suspected is in an abusive relationship.). (adapted from Banyard, 2005)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a scale of 0 (Can't do) to 100 (Very Certain) their degree of confidence in several behaviors (e.g., I could talk to a friend who I suspected is in an abusive relationship.). (adapted from Banyard, 2005)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) how effectively they could convince a partner to use contraception (e.g., If I decided to have sex, I could talk to any potential partner to make him/her understand why we should use condoms or other contraception.).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) how effectively they could convince a partner to use contraception (e.g., If I decided to have sex, I could talk to any potential partner to make him/her understand why we should use condoms or other contraception.).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) how effectively they could get and use contraception (e.g., If I wanted to, I could get condoms or another form of contraception.).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) how effectively they could get and use contraception (e.g., If I wanted to, I could get condoms or another form of contraception.).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=not likely at all; 2=Unlikely; 3=Likely; 4=Extremely likely) how likely they would be to intervene as a bystander (e.g., Approach a friend if I thought they were in an abusive relationship and let them know that I am here to help.). (adapted from Banyard, 2005)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=not likely at all; 2=Unlikely; 3=Likely; 4=Extremely likely) how likely they would be to intervene as a bystander (e.g., Approach a friend if I thought they were in an abusive relationship and let them know that I am here to help.). (adapted from Banyard, 2005)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to communicate with others before sexual activity (e.g., Before deciding to have sex, how likely would you be to talk with your parents or another trusted adult about sexual health?). (adapted from Scull, Malik, & Kupersmidt, 2014)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=not at all likely; 2=unlikely; 3=likely; 4=extremely likely) how likely they are to communicate with others before sexual activity (e.g., Before deciding to have sex, how likely would you be to talk with your parents or another trusted adult about sexual health?). (adapted from Scull, Malik, & Kupersmidt, 2014)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (1=incomplete to 4=complete) how complete the information included in an advertisement is (e.g., How complete is the information in this advertisement?).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (1=incomplete to 4=complete) how complete the information included in an advertisement is (e.g., How complete is the information in this advertisement?).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) the degree to which they agree with several statements about media (e.g., Media are dishonest about what happens if people have sex.). (adapted from Scull, Malik, and Kupersmidt, 2014, α=0.86)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) the degree to which they agree with several statements about media (e.g., Media are dishonest about what happens if people have sex.). (adapted from Scull, Malik, and Kupersmidt, 2014, α=0.86)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) the degree to which they agreed that teens on the media (e.g., Teens in the media do things that average teens do.). (adapted from Austin and Johnson, 1997, α=0.80)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are asked to indicate on a 4-point Likert scale (1=strongly disagree; 2=disagree; 3=agree; 4=strongly agree) the degree to which they agreed that teens on the media (e.g., Teens in the media do things that average teens do.). (adapted from Austin and Johnson, 1997, α=0.80)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked several multiple choice and True/False questions about sexual health (e.g., True or false: You can tell someone has an STI by looking at him/her.).

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are asked several multiple choice and True/False questions about sexual health (e.g., True or false: You can tell someone has an STI by looking at him/her.).

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (variable) how 1) believable; 2) truthful; 3) trustworthy they find the advertisement. (adapted from MacKenzie, Lutz, and Belch, 1986)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (variable) how 1) believable; 2) truthful; 3) trustworthy they find the advertisement. (adapted from MacKenzie, Lutz, and Belch, 1986)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (1=not much at all; 2=a little; 3=a good amount; 4=a lot) the extent to which they: 1) wanted to argue back to what it was saying; 2) thought of ways they disagreed with what was presented; 3) thought of ways that the information being presented was inaccurate or misleading; and 4) found themselves looking for flaws in the way information was presented in the ad. (adapted from Moyer-Gusé and Nabi, 2010)

Time frame: posttest (approximately one week after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points and participants were able to skip questions on the questionnaire.

Participants are shown an advertisement and asked to indicate on a 4-point Likert scale (1=not much at all; 2=a little; 3=a good amount; 4=a lot) the extent to which they: 1) wanted to argue back to what it was saying; 2) thought of ways they disagreed with what was presented; 3) thought of ways that the information being presented was inaccurate or misleading; and 4) found themselves looking for flaws in the way information was presented in the ad. (adapted from Moyer-Gusé and Nabi, 2010)

Time frame: follow-up (approximately three months after pretest)

Population: The number of participants analyzed for this measure differs from the numbers in the Participant Flow module due to the fact that not all participants completed questionnaires at all time points, participants were able to skip questions on the questionnaire. In addition, participants whose follow-up data were collected during the COVID-19 pandemic were excluded from the analyses.