Describe the Halo Effect.
Occurs when evaluating someone too positively or too negatively because of the presence of one or a few characteristics.
Approximately ___% of the scores in the distribution lie within one standard deviation of the norm in a bell curve.
68%
Describe the Hawthorne Effect.
Term used to describe subjects who behave differently than they normally do because they are aware they are being observed for research purposes.
Explain the differences between nominal, ordinal, interval and ratio scales of measurement.
Nominal - name ie male or female
Ordinal - rankings - no absolute difference
Interval - same distance between rankings
Ratio - interval scale with an absolute zero