Psychology quizzes are everywhere online, and most of them are made up. When I built Ask.Dr — a site with 240+ free psychology self-assessments, symptom guides and articles — the core rule was that clinical-style screeners should use published, validated instruments , implemented exactly as specified, with clear "this is not a diagnosis" framing. The PHQ-9 depression questionnaire (Kroenke, Spitzer & Williams, 2001) is a good example of what that involves in code. Model the...