PSYC31H3 Chapter Notes - Chapter 4: Umber, Statistical Significance, Aphasia
Document Summary
Comparison standard : normative or individual: dependent on patient beh evaluated and assessment purposes. Population average: norm comparison stand, average/middle score. Differential rate of dev for boys and girls: children norms best given separately for each sex. Evaluating basic cognitive functions that develop through childhood. Performances of these capacities do not distribute normally: memory, perception and attention, skewed in substandard direction as few persons can be expected to do bad. Nature set an upper limit: mental activities as processing speed and short term storage capacity. Called for whenever a psych trait or function that is normally distributed in intact adult population is evaluated for change. Expected for adult vs level of patients performance. Premorbid and current examples of beh in question. Hoofien et al: army veterans for wais-r compared with postinjury. Cluster of highest scores on academic subjects to aid in estimating premorbid ability: circumstances can affect performances. Estimates can be inaccurate: good old days bias.
