A __________ reinforcer satisfies a basic survival need, like hunger or thirst

The three Humean variables, which lead people to infer that events are causally related, are ___

a. planning, precedence, and covariation b. consistency, contiguity, and covariation c. contiguity, precedence, and covariation d. planning, precedence, and consistency

Coincidences are extremely striking, and often lead people to believe in ________. The ease with which we think of coincidences makes them important players in the ______ heuristic

a) illusory correlations; availability b) illusory correlations; representativeness c) stereotypes; availability d) stereotypes; representativeness