Editor's pick
Valid psychological tests online: how they differ from social-media quizzes
Each month over 12,000 Russians search for "psychological tests online". Lau et al. 2020 in a systematic audit of 1,009 mental-health apps: only 2.08% had peer-reviewed evidence of effectiveness. What separates a validated instrument from entertainment: six criteria (Cronbach α, factor structure, normative tables, sensitivity/specificity, peer-review, cross-cultural replication). Demonstrated on four Soveria-catalog examples: PHQ-9, ECR-R, PCL-5, BHS.