Tversky and Kahneman (1974) provided participants with personality descriptions of engineers or lawyers and asked them to choose whether the individual was a ‘lawyer' or ‘engineer.'
Out of a supposed sample of 100 engineers and lawyers, half of participants were told that there were 70 engineers and 30 lawyers while the other half were told that there were 30 engineers and 70 lawyers. What was the main finding of this study?
a. The availability heuristic is very common.
b. The negativity bias is very common.
c. People are pretty good at using the base rate when provided with descriptive information.
d. People often do not use the base rate when provided with descriptive information about people.
Answer: D
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