Healthy
Conditions
Brief summary
The goal of this work is to address increasing concerns about young children's digital media exposure and language outcomes by testing how the times course of word learning unfolds in digital environments and the cascading impact of digital media on vocabulary outcomes. The findings will have important implications for understanding when and where optimal word learning from media can occur.
Detailed description
The goal of the current proposal is to identify how digital media alters the mechanisms of word learning and subsequently impacts the lexical foundation on which a child's vocabulary is built. Specifically, the proposal aims to identify the impact of digital media on 1) the processes underlying real-time word learning, and 2) the processes of language generalization and vocabulary growth. Specific Aim 1 will use a novel word learning task to test children's ability to map and retain new words within and between digital media (2D images on a tablet) and real world objects (3D objects). Specific Aim 2 will probe children's novel label generalization abilities within and between 2D and 3D modalities using a novel noun generalization task. Further, individual differences in a child's prior technology experience will be measured and used to predict overall vocabulary as well as performance within and between each task. This Clinical Trial record is focused on Specific Aim 1.
Interventions
Modality in which items will be presented (via tablet/digital media or as real object). 3D items initially and generalization as 2D
Modality in which items will be presented (via tablet/digital media or as real object). 2D items initially and generalization as 3D
Modality in which items will be presented (via tablet/digital media or as real object). 2D items initially and retention/generalization as 2D
Sponsors
Study design
Intervention model description
Participants will be randomly assigned to one of for conditions.
Eligibility
Inclusion criteria
* between 18 and 30 months old
Exclusion criteria
* diagnosed developmental delay or disorder * exposure to more than 25% of another language
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Accuracy on Referent Selection | 1 minute | Children's choices on each trial of the task will be measured. Correct responses are those to the target (prompted) item - for referent selection, this is the item asked for in the prompt (e.g. shoe, dog) |
| Accuracy on Retention | 5 minutes | Children's choices on each trial of the task will be measured. Correct responses are those to the target (prompted) item - for retention, this is the item asked for in the prompt which are the correct word-object pairing for novel items previously introduced. |
Countries
United States
Participant flow
Recruitment details
Participants were recruited from Stillwater, OK and Dallas, TX
Baseline characteristics
| Characteristic | — |
|---|---|
| Age, Continuous | 23.78 age in months STANDARD_DEVIATION 4.29 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 10 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 43 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 2 Participants |
| Race (NIH/OMB) American Indian or Alaska Native | 0 Participants |
| Race (NIH/OMB) Asian | 0 Participants |
| Race (NIH/OMB) Black or African American | 14 Participants |
| Race (NIH/OMB) More than one race | 3 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 0 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 6 Participants |
| Race (NIH/OMB) White | 34 Participants |
| Sex: Female, Male Female | 19 Participants |
| Sex: Female, Male Male | 37 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk | EG002 affected / at risk | EG003 affected / at risk |
|---|---|---|---|---|
| deaths Total, all-cause mortality | 0 / 0 | 0 / 0 | 0 / 0 | 0 / 0 |
| other Total, other adverse events | 0 / 0 | 0 / 0 | 0 / 0 | 0 / 0 |
| serious Total, serious adverse events | 0 / 0 | 0 / 0 | 0 / 0 | 0 / 0 |