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PsycTESTS® – Reliability, Validity, Factor Analysis Examples on APA PsycNET®, EBSCOhost, Ovid, and
ProQuestApril 2016
PsycTESTS® - Reliability, Validity & Factor Analysis
These slides contain supporting material for a post on the APA Databases & Electronic Resources Blog
PsycTESTS - Reliability, Validity & Factor Analysis
• Reliability is the ability of a test to measure an attribute consistently. If a group of people takes a personality test and many of them get different results from one day to the next, the test has low reliability.
• Validity is the degree to which a test reflects what it is supposed to measure. If a test that is supposed to measure general intelligence actually measures the ability to recall classic literature, the test has low validity.
• Factor Analysis is a mathematical procedure that reduces a set of interrelations among variables to a smaller set of variables. For example, a sociology survey might start with six factors of wealth (income, education, occupation, home value, parks in neighborhood, and crime in neighborhood) and, using statistical correlations, reduce them to just two factors: individual socioeconomic status and neighborhood socioeconomic status.
Psychometric Fields in PsycTESTS
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Ovid Search
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