Every time Trisha bottle-fed baby Isabel, she stoked Isabel's hair. In time, Isabel would make a sucking noise each time Trisha stroked her hair. In this example, __________ is the unconditioned stimulus

The main active ingredient in Red Bull and other energy drinks is

A. taurine. B. caffeine. C. guanine. D. tyrosine.

Which of the following students provides the most accurate information about bisexuality?

a. Robert: "Heterosexual people have greater acceptance of bisexual women than of lesbians.". b. Nancy: "Women are more likely to be attracted only to women, rather than to both women and men.". c. Tomás: "Heterosexual people believe that lesbians are more likely than bisexual women to be unfaithful to their romantic partner.". d. Ulla: "If a bisexual women is bicultural, she already knows that most North Americans have difficulty with people who don't fit into just one category.".