PSY322H1 Lecture Notes - Lecture 3: Lexical Decision Task, Double Jeopardy, John Pendry
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Why do we categorize people: we have limited resources. In groups and out groups: in groups is a we . Illusory correlation: an erroneous influence about the relationship between 2 categories of events. People overestimate the frequency of co-occurrence of distinctive events. E. g. overestimate a minority group that have hostile behaviour. If they are a minority, then chances of them being hostile are not very high. Thus if a minority group member does something hostile, then you overestimate the number of times they engage in hostile behaviour: hamilton and gifford: Project 39 separate sentences and the participants have the read each one of them. 26 sentences describe people from group a and 13 sentences of sentences describe people from group b. The ratio of desirable: undesirable sentence are the same between the 2 groups and both has more desirable sentences. Then people did a memory test in which they were asked to write down which group did what behaviour.
