Psychology Articles
Accessible psychology knowledge to help you better understand yourself.
Frost Perfectionism Scale: 35 Items, Six Dimensions
Thirty-five statements on concern over mistakes, personal standards, parental expectations and criticism, doubts about actions, and organization.
AAQ-II: 7 Items, Scored 7 to 49
Seven statements about painful thoughts and feelings, rated 1 to 7. What the scale measures, where the cutoffs came from, and why validity is still argued.
Internet Addiction Test: 20 Items, Scored 20 to 100
Twenty questions about how much the internet interferes with sleep, work and relationships, rated 1 to 5, plus where the cutoffs came from.
EAT-26: 26 Items, Scored 0 to 78
Twenty-six questions about eating, weight and control, answered by frequency and scored 0 to 78. The cutoff of 20, where it comes from, and why it moves.
Pittsburgh Sleep Quality Index (PSQI): Is Your Sleep Really Good?
The Pittsburgh Sleep Quality Index (PSQI) is one of the most widely used self-report measures of sleep quality worldwide. This article explores its seven components—subjective sleep quality, sleep latency, sleep duration, sleep efficiency, sleep disturbances, hypnotic medication use, and daytime …
CES-D Depression Test: A Comprehensive Guide to the Center for Epidemiologic Studies Depression Scale
The CES-D (Center for Epidemiologic Studies Depression Scale), developed by Lenore Radloff in 1977, is a classic self-report depression screening tool widely used in epidemiological research and clinical screening. This article provides a comprehensive overview of its theoretical foundations, four-factor …
Aggression Questionnaire (AQ) — Buss & Perry's Standard Measure of Aggression
The Aggression Questionnaire (AQ), developed by Buss and Perry in 1992, is one of the most widely used standardized psychometric tools for assessing trait aggression. This article provides a comprehensive overview of the AQ's theoretical foundations, its four-factor structure (Physical …