Suppose you wanted to test the hypothesis that viewing pornographic material increases aggressive behavior. The dependent variable would be

A common feature of autism spectrum disorder across the range of functioning is the inability to _____

a) see things from someone else's perspective. b) speak. c) focus on just one thing. d) control verbal outbursts.

Professor Cook is conducting a research study on the cognitive abilities of infants and young children. Rather than follow subjects from birth to the age of 10, he assesses small groups from various ages

Of 1-year-olds he measures five children, of 2-year-olds he measures five different children, and so forth. By the time he has completed his study, Dr. Cook has an assessment of 50 different children from 10 different age groups. Which of the following describes the research method that Dr. Cook is using? a. a cross-sectional design b. a longitudinal design c. a quasi-experimental design d. a semi-reliable design