In general, how old are the oldest-old?

Two-year-old Jeremy is participating in a study in which the researcher said that she was looking for a "crug"

She then pulled an object out of a paper bag, looked happy, and said, "Ah!" Later, when a different researcher asked Jeremy the name of the object, he told her that it was a "crug." This is an example of young children's ability to use a. grammatical cues b. the whole-object assumption c. referential cues d. imitation

A variation of the counterconditioning procedure developed by Watson and Jones has been used to treat adult phobias. This variation is called:

a. positive reinforcement. b. intermittent reinforcement. c. systematic desensitization. d. shaping.