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Observation III

1. Scales of measurement

a. Nominal scales – categories; Schachter’s anxiety and affiliation study

b. Ordinal scales – rank order of data; top ten psychologists

c. Interval scales – equal intervals between points on scale

d. Ratio scales – true zero

e. Comparison and contrast of types of scales – “at the Kentucky Derby”

2. Evaluating observational methods:

Several issues: