8 articles
Attitude scale
An attitude scale is a psychometric instrument that measures a person's attitude by having them rate agreement with statements, most commonly in the Likert format.
Content validity
Content validity is the degree to which a test's items are relevant to and representative of its intended construct, judged by expert panels before data collection.
Differential item functioning
Differential item functioning (DIF) is a psychometric method that flags test items behaving differently for different groups, such as demographic subpopulations, after examinees are matched on ability.
Guttman scale
A Guttman scale is a cumulative scaling method in psychometrics, created by Louis Guttman in 1944, in which endorsing a stronger item implies endorsing all weaker ones.
LSQ study
LSQ study: validation research on the Lipedema Screening Questionnaire, a nine-item, 0-20 score lipedema screening tool by Amato et al.; the 2026 Turkish validation reported alpha 0.866, AUC 0.970, cut-off 8.5.
Self-report inventory
A self-report inventory is a psychometric questionnaire in which respondents answer standardized written items about their own thoughts, feelings, or behaviors, scored into composite measures.
Semantic differential
The semantic differential is a psychometric rating method in which respondents judge concepts on bipolar adjective scales such as good–bad, introduced by Osgood, Suci, and Tannenbaum in 1957.
Visual analog scale
The visual analog scale (VAS) is a psychometric rating instrument on which a respondent marks the intensity of pain, mood, or anxiety along a continuous line.