A researcher wants to test a hypothesis according to which the mean rating of guilt will be higher for unattractive defendants than for attractive defendants. The appropriate statistical test would be the
A. Pearson r.
B. two-tailed t-test.
C. chi-square.
D. one-tailed t-test.
Answer: D
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A personality disorder diagnosis must include a(n) ____
a. temporary, but not long-term, disruption in the ability to function normally b. inflexible personality that causes significant functional impairment c. preceding childhood or adolescent disorder d. accompanying medical condition
In classical conditioning, stimulus discrimination occurs when:
a. a novel stimulus produces a response that is similar to the response produced by a conditioned stimulus b. a conditioned response develops that is opposite in direction to the unconditioned response c. an unconditioned response develops that is opposite in direction to the conditioned response d. a novel stimulus produces a response that is different from the response produced by a conditioned stimulus
Some of the people in Jacqueline's aerobics class are in a better mood after their half-hour workout, but others are short tempered and irritable after class. In this example, there is:
a. low consensus b. low consistency c. high distinctiveness d. low distinctiveness
In the U.S. in 2007 individuals who were 65 years of age or older experienced
a. less than 750,000 deaths b. approximately 1 million deaths c. nearly 1.35 million deaths d. just under 1.76 million deaths e. about 2.4 million deaths