The brain of the average person shrinks about ______ percent in size between the ages of 20 and 70

The process of presenting the conditioned stimulus alone so often that the learner no longer associates it with the unconditioned stimulus and stops making the conditioned response is called ______

a. extinction c. spontaneous recovery b. generalization d. shaping

Preschool children build their vocabularies at a rapid rate that requires that after the briefest encounter they can associate the word and its meaning. This process is known as

a. rapid words. c. fast linguistics. b. fast mapping. d. quick vocabulary.