John conducted an experiment to test the effectiveness of a smoking cessation program. The experiment took place over a 1-month time period. Participants in the control group and the experimental group (those who participated in the smoking cessation program) recorded the number of cigarettes that they smoked each day. John was unaware that "national stop-smoking week" also happened to take place
during the 1-month time period of his experiment. John's experiment is now confounded by
a. maturation.
b. history.
c. regression to the mean.
d. mortality.
b
Psychology
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Consider the following problem: "Some college students are bright. All bright people are hard working. Therefore, all college students are hard working." What kind of thinking task does this problem represent?
a. propositional reasoning. b. problem solving c. a syllogism d. decision making
Psychology
The part of the brain dedicated to emotion and memory is the
A) endocrine system. B) limbic system. C) reticular formation. D) lymphatic system.
Psychology