Source Paper
Dopaminergic foundations of schizotypy as measured by the German version of the Oxford-Liverpool Inventory of Feelings and Experiences (O-LIFE)—a suitable endophenotype of schizophrenia
Phillip Grant, Yvonne Kuepper, Eva A. Mueller, Catrin Wielpuetz, Oliver Mason et al.
Frontiers in Human Neuroscience • 2013
O-LIFE Test-Retest Reliability
Objective: Evaluate test-retest reliability of the German version of the O-LIFE questionnaire through re-administration 3 months after initial assessment
This is a O-LIFE Test-Retest Reliability protocol using human as the model organism. The procedure involves 3 procedural steps, 1 materials. Extracted from a 2013 paper published in Frontiers in Human Neuroscience.
Model and subjects
human • both • 17-58 years • 245
Study window
Estimated timing pending
Core workflow
Initial Assessment (Baseline) • Three-Month Interval • Re-test Administration
Primary readouts
- Test-retest reliability correlation coefficients for O-LIFE total score
- Test-retest reliability for O-LIFE subscales
Key equipment and reagents
Verified items
0
Direct vendor links
0
Use this page as an execution guide, then fall back to the source paper whenever you need exact exclusions, dosing details, or assay-specific caveats.
Confirm first
- Verify the animal model, intervention setup, and collection timepoints against the source paper.
- Check that every direct vendor link matches the exact specification your lab plans to run.
Use the page like this
- Work through the protocol steps in order and use the inline vendor chips only when you need to source or verify an item.
- Jump to Experimental Context for readouts, data shape, and analysis flow before planning downstream analysis.
Protocol Steps
Start here. The step list is optimized for running the experiment, with direct vendor links available inline when you need to source a cited item.
Initial Assessment (Baseline)
Participants from Justus-Liebig-University, Technische Hochschule Mittelhessen, and Erftgymnasium Bergheim received email or personal invitations containing a link to the online O-LIFE questionnaire
Note: Initial sample consisted of 1228 participants (341 male, 887 female) aged 17-75 years (M = 27.1, SD = 9.47, MD = 24)
View evidence from paper
“The email/personal invitations contained a link to an online-version of the inventory programmed by the authors using the platform soscisurvey.de”
Three-Month Interval
Wait 3 months after initial assessment before re-test administration
Note: This interval allows evaluation of test-retest reliability
View evidence from paper
“The sample for the re-test of the O-LIFE was acquired 3 months later in the same fashion as the main sample”
Re-test Administration
Participants receive a second online administration of the O-LIFE questionnaire via the same soscisurvey.de platform. Only the O-LIFE is administered without additional questionnaires to reduce completion time and increase compliance
Note: Re-test sample contained 245 participants (45 male, 200 female) aged 17-58 years (M = 25.83, SD = 8.6, MD = 23)
View evidence from paper
“in this case all other questionnaires and items except the O-LIFE were omitted in order to reduce the time necessary for participants to answer the items and thereby increase compliance”