PSYC 2360 Lecture Notes - Lecture 4: Criterion Validity, Concurrent Validity, Convergent Validity

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2360
• Professor: Gloriagonzalez-morales

Document Summary

Reliability: the extent to which a measure is free from random error. Assess reliability: test-retest, internal consistency multiple items related to each other (ex. Measuring sleepiness based on lack of ability to concentrate, yawning, heaviness of eyes etc. : inter-rater reliability. Extent to which scores on the same measure, administered at 2 different times, are correct. Internal consistency reliability extent to which all the items in a multiple-item measure correlate with each other: ex. Self-esteem measure, mid-term chronbach"s alpha: . 70 is considered acceptable, number of items has an influence on the size of the coefficient. Inter-relater reliability inter-observer agreement extent to which the ratings of one or more observers correlate with each other judges need to be trained and independent: ex. Validity- the extent to which measures indicate what they are intended to measure: construct validity the match between the conceptual definition and the operational definition. Convergent validity measures should be related to each other and are.