Aggarwal and O'Brien (2008) studied hundreds of college students and identified several keys to reducing social loafing. All of the following are examples of the strategies they suggest except
a. breaking down complex projects into smaller components.
b. keeping groups small.
c. selecting group members low in achievement motivation.
d. using peer evaluations.
c
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The mean for a sample of n = 9 scores has a standard error of 2 points. This sample was selected from a population with a standard deviation of ? = 18
Indicate whether the statement is true or false
Answer the following statements true (T) or false (F)
1. The expectancy theory of alcohol effects predicts that people who believe that alcohol makes them funnier will tell more jokes when intoxicated 2. Valium and Xanax are depressant drugs classified as barbiturates 3. Long-term use of benzodiazepines produces a psychological but not physical dependence 4. Stimulant drugs increase the levels of dopamine and norepinephrine in the brain 5. The use of Ecstasy can lead to increased body temperature
Which statement is NOT true about B. F. Skinner?
A) He developed a specialized chamber in which rats could press levers to earn food. B) He proposed the psychoanalytic theory. C) He denied the existence of free will. D) He developed the principle of reinforcement.
Which of the following has been acknowledged as a way that investigators can be certain that a defendant has falsely confessed to a crime?
A. The suspect confessed to a crime that did not occur. B. The suspect confessed to a crime that was physically impossible for him or her to commit C. The suspect confessed to a crime, but the guilt of another perpetrator has been definitively established. D. all of the above