PSYC 2017 Study Guide - Midterm Guide: Extraversion And Introversion, Operational Definition, Face Validity
Document Summary
Uses symbols such as words or numbers to classify or categorize the values of a variable: example- mark gender 1=female 2= male, college major, research group, personality type etc, ordinal. Rank-order scale: example- order of finish in race, social class (low, medium, high, ranking of need for therapy. Used to rank order, plus has equal intervals or distances between: interval adjacent numbers, examples, ratio absolute zero point, example, celsius temp, fahrenheit temp, iq scores, year. Type of correlation and should be strong and positive to indicate strong consistency of relationship: test-retest reliability. Example: memory test after chocolate once in class, give another memory test after chocolate at another time in class, test scores should be similar, equivalent forms reliability. Scores from different but equivalent tests end up being similar. Consistency of group of individuals" scores on two versions of the same test: example, internal consistency reliability, 2 different memory tests. Single question measures what it"s supposed to measure.
