F51.0
Conditions
Interventions
Group 1: (1) Intervention group: My best possible self (Intervention: self-referral & future-related
participants imagine their own best possible future and take down notes
duration: 8 days, 10 min every morning)
Group 2: (2) Control group: best possible future of mankind (Intervention: allo-centered & future-related
participants imagine the best possible future of mankind and take down notes
duration: 8 days, 10 min every morning)
Group 3: (3) Control group: early childhood memories (Intervention: self-referred & related to the past
participants imagine early childhood memories and take down notes
duration: 8 days, 10 min every morning)
Sponsors
Heinrich-Heine-Universität Abt. Klinische Psychologie
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: - fulfillment of research criteria on primary insomnia (Edinger et al., 2004) - fulfillment of quantitative criteria on primary insomnia (Buysse, Ancoli-Israel, Edinger, Lichstein, & Morin, 2006): sleep latency or waking times after sleep onset of > 30 minutes for at least 3 nights/week for at least 6 months
Exclusion criteria
Exclusion criteria: - other sleep disorders - sleep disorders caused by circardian problems & shift work - regular drug & alcohol consumtion (Marihuana > 1x/weeke & > 3 glasses of alcohol/day over 21 days) - Epilepsy - severe other psychiatric disorders - severe depression - suicidality - schizophrenia
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| - Sleep Quality: Insomnia Severity Index (ISI-G; questionnaire; pre - post - 3months follow up) - sleep latency, sleep efficiacy (objectively: actigraphic devices; pre - post - 3months follow up) - sleep latency, sleep efficiacy (subjectively: sleep diaries; pre - post - 3months follow up) | — |
Secondary
| Measure | Time frame |
|---|---|
| - sleep hygiene: Sleep Hygiene Index (SHI; questionnaire; pre - post - 3months follow up) - participants' evaluation & stress: Believes about Sleep Questionnaire (DBAS-16; questionnaire; pre - post - 3months follow up) - Ressources: Perceived Competence Scale (PCS; questionnaire; pre - post - 3months follow up), Life-Orientation-Test (LOT-R; questionnaire; pre - post - 3months follow up) - Depression: Center for Epidemiologic Studies Depression Scale (CESD; questionnaire; pre - post - 3months follow up) - Affect: Positive and Negative Affect Scale (PANAS; questionnaire; pre - post - 3months follow up) | — |
Countries
Germany
Contacts
Public ContactAnnika Gieselmann
Heinrich-Heine-Universität Institut für Experimentelle Psychologie Abteilung Klinische Psychologie
Outcome results
None listed