Scales

Social Functioning Questionnaire (SFQ)

The Social Functioning Questionnaire (SFQ) is an 8-item self-report instrument developed by Peter Tyrer and...

September 17, 2026 • Dr. Mohammed Looti
Scales

Short Fatigue Questionnaire

A comprehensive psychometric guide to the Short Fatigue Questionnaire (Verkorte Vermoeidheidsvragenlijst / SFQ), including theoretical...

September 12, 2026 • Dr. Mohammed Looti