An example of a recreational drug that is found in nature is
A) ketamine.
B) heroin.
C) LSD.
D) ethyl alcohol.
E).PCP.
Answer: D
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Which of the following is true of sensory neurons?
A. Sensory neurons control muscles and produce movement. B. Sensory neurons gather information from the environment and convey it into the central nervous system. C. Sensory neurons have cell bodies covered with myelin. D. Sensory neurons send messages away from the brain toward the periphery.
The correlation coefficient conveys
a. the size and direction of the relationship between two variables. b. whether one variable causes the other variable to happen. c. the unintended changes in a subject's behavior due to the experimenter's cues. d. whether or not the principle of falsifiability applies to each variable.
A teacher wants to find out whether her new method of teaching is effective or not. She decides to compare the exam grade from the current semester from the exam grade from previous semesters. She calculates her t score for the current semester to be .39. What can she conclude from this study?
A. She needs to reject the null hypothesis that the new method is not effective. B. She fails to reject the null hypothesis that the new method is not effective. C. She cannot prove a null hypothesis, so more data are needed. D. You need to know the sample size to make a decision about this study.
A heuristic by which people classify things intothe category to which it appears to be the
most similar is called the __________ heuristic. a. representativeness b. availability c. positive consensus d. similarity e. base-rate