PSYCH 2H03 Lecture Notes - Availability Heuristic, Representativeness Heuristic, Medical Diagnosis
12 Jan 2014
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Chapter 11: thinking: deduction: start w/ general conclusion, make a decision about a specific case (top- down, orange is a fruit. Oranges must grow on trees. Induction: start w/ a specific case/fact, draw general conclusions (bottom- up) I see a tiger with black stripes on orange fur. They come up w/ a lot more words that start w/ r or k b/c they"re more available. Words ending w/ - ing are more available. For judgment, need to be able to judge frequencies of events. Used a lot by media: when looking for evidence, we look for event frequency. This group guessed 1000 miles. This group guessed 2000 miles. Representative heuristic: assume homogeneity (that all members of a category are the same) This is the conjuction fallacy. Linda"s 31yrs old, single, outspoken & very bright. As a student, she was deeply concerned w/ issues of discrimination & social justice, & also participated in anti- nuclear demonstrations. Linda is a band teller.
