In their research on group dynamics, Lewin, Lippitt, and White found the ____ group to be highly aggressive.
a. democratic
b. authoritarian
c. laissez-faire
d. largest
b. authoritarian
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Even if a treatment has an effect, it is still possible to obtain a sample mean after the treatment that is very similar to the original population mean. What outcome is likely if this happens?
a. Reject H0and make a Type I error b. Correctly reject H0 c. Fail to reject H0 and make a Type II error d. Correctly fail to reject H0
Mariano often plays with the baby dolls in the dramatic play area. Consequently, Mariano is likely to be __________
A) ignored by the girls when he plays with the dolls B) praised by the girls when he plays with trucks and blocks C) praised by the boys when he plays with the dolls D) ignored by the boys, even when he plays with trucks and blocks
A psychologist expects physical activity to be related to performance on a measure of creativity. She randomly assigns participants to walk or run on a treadmill for 10 minutes before she measures their creativity. Which of the following best describes the hypothesis in this study?
A. Predictive hypothesis B. Causal hypothesis C. Untestable hypothesis D. Research question
Which of the following people is LEAST likely to be experiencing the period of middle adulthood?
a. Marie, who is 35 years old b. Laura, who is 45 years old c. Jane, who is 55 years old d. Maxine, who is 60 years old