Adaptation of the PHQ-4 Short Screening for Depression and Anxiety to increase its Sensitivity to Subclinical Variability

The PHQ-4 consists of two validated ultra-brief screeners for depression (PHQ–2) and anxiety (GAD–2).

Over the last 2 weeks, how often have you been bothered by the following problems?

• Feeling nervous, anxious or on edge
• Not being able to stop or control worrying
• Feeling down, depressed, or hopeless
• Little interest or pleasure in doing things

0: "Not at all", 0.5: "Once or twice, 1: "Several days", 2: "More than half the days", 3: "Nearly every day"

In this brief study, we test the addition of the "Once or twice" response option to increase the scale's sensitivity to subclinical variability.

• Paper

Study 1

• Data
• Analysis

Study 2

• Experiment
• Preregistration
• Data cleaning
• Data analysis