PSYC 2001 Chapter Notes - Chapter 5: Inter-Rater Reliability, Heart Rate Variability, Criterion Validity
14 Feb 2018
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Document Summary
Operational: operationalized subjective well-being with self report 5 item list about life satisfaction. Scale: strongly disagree to strongly agree measured by #s 1 to 7. Primary classification of variables, categories like sex, species. Numbers added to represent variable but not numerical value e. g. 1= male 2= female. Quantitative variables: are coded with meaningful numbers; 3 types: ordinal scale: rank order. E. g. top best selling books: interval scale: number represents equal differences between levels and there is no true zero. E. g. temperature: ratio scale: number represents equal differences between levels and there is a true zero (zero actually means nothing) e. g. scoring 0 out of 100 on a test. Reliability: how consistent the results of a measure are; whether they rely on a particular score. 3 types: test-retest, interrater: 2+ individual observers will come up with consistent or very similar findings, most relevant for observational measures, internal: measures the same construct. The closer to either -1. 0/+1. 0, the stronger the relationship is.
