Psychological tests by the author of “Robert L. Spitzer”

Take free, research-backed psychological tests and get clear, private results in minutes.

All tests

Differential Diagnostic Questionnaire in a career counseling room.
  • career guidance
Differential Diagnostic Questionnaire
30 questions5 min
This brief self-report measure is intended to support rapid screening of vocational interests and preferred activity domains. The Differential Diagnostic Questionnaire he...
Differential Diagnostic Questionnaire shows artistic career interests.
  • career guidance
Differential Diagnostic Questionnaire
20 questions4 min
This measure is intended to support structured screening of differential diagnostic considerations. The Differential Diagnostic Questionnaire is a brief self-report tool ...
Differential Diagnostic Questionnaire in a guidance room.
  • career guidance
Differential Diagnostic Questionnaire
20 questions15 min
This measure is a brief self-report questionnaire intended to support differential screening of vocational interests and preferences. The Differential Diagnostic Question...
PHQ-9 Test shows a quiet symptom check.
  • depression
Patient Health Questionnaire-9 (PHQ-9)
9 questions2 min
This measure is commonly used to quickly screen for the presence and severity of depressive symptoms in clinical and primary care settings. The Patient Health Questionnai...
Health Quiz: a calm four-question check-in.
  • depression
  • uneasiness
Patient Health Questionnaire-4 (PHQ-4)
4 questions1 min
This brief self-report screener is used to identify possible symptoms of anxiety and depression over the prior two weeks. Patient Health Questionnaire-4 (PHQ-4) is intend...
Somatic Symptom Scale shows a clinic review.
  • somatics
Somatic Symptom Scale (SSS-8)
8 questions2 min
This brief self-report measure assesses the severity of common somatic symptoms and related distress. The Somatic Symptom Scale (SSS-8) is designed to support clinical sc...
Somatized Mental Disorders in a clinic room.
  • weakness
  • depression
Somatized Mental Disorders
39 questions8 min
This questionnaire is designed to screen for somatic symptom presentations that may be associated with underlying psychological distress. Somatized Mental Disorders provi...
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