Which statistic estimates the average of all the possible split-half correlations but can only be used when each question has only two response alternatives?
a. the Spearman-Brown formula
b. the Kuder-Richardson formula 20
c. Cronbach's alpha
d. Cohen's kappa
b
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According to K. Warner Schaie, what is the primary mission of young adulthood?
A. responsibility B. acquisition C. achievement D. reintegration
In the classical conditioning model of posttraumatic stress disorder, sights, smells, and sounds
associated with the original traumatic event serve as ______. a. unconditioned stimuli c. conditioned stimuli b. unconditioned responses d. conditioned responses
If the United States wanted to model community support for preventing adolescent pregnancy, which of the following countries has a comprehensive model in place?
A. Italy B. The Netherlands C. Honduras D. Brazil
Regarding the facial feedback hypothesis, which of the following statements is FALSE?
a. Researchers found that holding a pen crosswise between one's teeth caused one to frown and to feel sad. b. People whose faces have been injected with Botox showed less brain activity as they imitated angry faces, which may indicate that they feel less emotion due to the Botox. c. Reducing the facial feedback that contributes to one's sadness may help alleviate depression. d. When one contracts the facial muscles in the forehead, the felt emotion is surprise, while contracting the muscles in the brow results in the felt emotion of anger.