PSYC 1010 Lecture Notes - Intellectual Disability, Lewis Terman, David Wechsler

• School: York University
• Department: Psychology
• Course: PSYC 1010
• Professor: all

Document Summary

Psychological tests are standardized measure of behaviour- usually mental abilities or aspects of personality. Test scores are interpreted by consulting test norms to nd out what represents a high or low score. As measuring devices, psychological tests should produce consistent results, a quality called reliability. Test-retest reliability is estimated by comparing subjects scores on two administrations of a test. Reliability estimates should yield fairly high positive correlations. Validity refers to the degree to which there is evidence that a test measure what it was designed to measure. Criterion-related validity is critical when tests are used to predict performance. Construct validity is critical when a test is designed to measure a hypothetical construct. Psychological test - a standardized measure of a sample of person s behaviour. Used to measure the individual differences that exist among people in abilities, aptitudes, interests, and aspects of personality. A particular behaviour sample may not be representative of your characteristic behaviour.