Any stimulus, such as a bell that requires learning to elicit a conditioned response is called a(n) __________

Of the following individuals, who is the most likely to have engaged in anal intercourse within the last year?

a. Joel, a gay man in a committed relationship b. Sean, a single heterosexual man c. Carter, a heterosexual man in a committed relationship d. Billie, a single homosexual woman

Per the text, Jean Piaget began his study of cognitive development by conducting _____ of his own three children

a. survey studies b. observational studies c. case studies d. narrative records