A person who has a serious problem in the production of meaningful speech and the

A girl learns that whenever her brother shares his cookie with her, her mother gives him a piece of candy

The girl starts sharing her treats with her friends when they come over in the hopes of getting a similar reward. The girl's learning to share is an example of _____ a) classical conditioning. b) operant conditioning. c) contingency theory. d) observational learning.

Muller-Lyer, Ponzo, and Zollner are all _________

a. proponents of the unconscious inference theory b. geometrical illusions c. researchers in the field of audiology d. towns in Italy where illusions were first studied