Adults aged 18-40 experiencing at least moderate levels of anhedonia and at least mild levels of depression symptoms
Conditions
Interventions
Group 1: One week of daily "picture-word" computerized positive imagery training
Sponsors
Georg-August-Universität Göttingen
Eligibility
Sex/Gender
All
Age
18 Years to 40 Years
Inclusion criteria
Inclusion criteria: • Fluent written and spoken German • Own a smartphone that is compatible with the SEMA3 ecological momentary assessment software (iOS 8 or later, Android 6.0 or later, not Huawei or Oppo) • Own a laptop that is compatible with the study (able to run Java-based programs) • Motivated and able to attend all study appointments and complete all study procedures • Scoring = 2 on item 1 (“Little interest or pleasure in doing things”) of the PHQ-9 (Kroenke et al., 2001), indicating at least moderate levels of anhedonia, and scoring = 5 in total on the PHQ-9, indicating at least mild levels of depression symptoms.
Exclusion criteria
Exclusion criteria: • Currently receiving psychological or pharmacological treatment for a psychological disorder or stress. • Currently in a crisis state requiring an acute treatment (e.g., suicidality)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Anhedonia experienced in daily life during the 1-week intervention phase compared to the 1 or 2-week baseline phase, as indicated by the mean of responses to the items "I was able to look forward to different activities and events" and "“I was able to enjoy different activities and events”, rated twice per day using ecological momentary assessment. | — |
Secondary
| Measure | Time frame |
|---|---|
| Positive affect, negative affect, positive cognitions, negative cognitions, and behavioural activation experienced in daily life in the 1-week intervention phase compared to the 1 or 2-week baseline phase, rated twice per day using ecological momentary assessment. Changes in anhedonia (26-item version of the Dimensional Anhedonia Rating Scale, DARS; Snaith-Hamilton Pleasure Scale, SHAPS), depression (Patient Health Questionnaire - 9, PHQ-9), positive affect (18-item positive subscales of the extended Positive and Negative Affect Schedules, PANAS-P), and anxiety (Generalized Anxiety Disorder - 7, GAD-7) from start to end of the 1-week intervention phase compared to start to end of the 1 or 2-week baseline phase of the study. Anhedonia (26-item version of the Dimensional Anhedonia Rating Scale, DARS; Snaith-Hamilton Pleasure Scale, SHAPS), depression (Patient Health Questionnaire - 9, PHQ-9), positive affect (18-item positive subscales of the extended Positive and Negative Affect Schedules, PANAS-P), and anxiety (Generalized Anxiety Disorder - 7, GAD-7) at 2 and 4-week follow-up. | — |
Countries
Germany
Contacts
Public ContactSimon Blackwell
Klinische Psychologie und Experimentelle Psychopathologie, Georg-Elias-Müller-Institut für Psychologie, Georg-August-Universität Göttingen
Outcome results
None listed