Psychologists measure the correlation between aptitude test scores and school grades in order to assess the ________ of the aptitude test.

Berko's classic study in which she showed children a nonsense object labeled a "wug" and then presented the child with a picture of two of these objects to see how the child would supply the plural form of "wug" demonstrated that preschool

a. children's use of grammatical morphemes is based on rules. b. children do not use inflection. c. children's language is not based on rules. d. children acquire a rule for using "un + verb" to reverse or stop the action of a verb.

What is Freud's theory of human development?

a. bio-sexual theory b. psychosexual theory c. sexual stage theory d. libido-drive theory