The phrase "out of sight, out of mind" best exemplifies the Piagetian concept of

a. tertiary circular reaction.
b. the one-to-one principle.
c. fast mapping

Stimuli that have reinforcing properties, but which are not primary reinforcers, are called

a. conditioned stimuli. b. discriminative stimuli. c. appetitive reinforcers. d. conditioned reinforcers. e. discriminative reinforcers.

What is the cause of AIDS?

a) virus b) bacteria c) a food-based poison d) an environmental toxin