Individuals with Down syndrome tend to be severely mentally retarded, regardless of whether they live at home or are institutionalized

A counselor recommends that a client who has trouble sleeping at night remove her tv, desk, and computer from her bedroom; thus, the client must engage in all nonsleeping activities in other areas of her house. The behavioral technique is called

a. environment planning b. overcorrection c. maintenance d. shaping

If you stare for 30 seconds at a red object and then look at a blank sheet of white paper, you will see a greenish image of the object. This phenomenon best supports the:

a. Young-Helmholtz opponent-process theory of color vision. b. Young-Helmholtz trichromatic theory of color vision. c. Hering opponent-process theory of color vision. d. Hering trichromatic theory of color vision.