When the independent variable represents a point on a continuum, the pictorial representation of the data should be:
a. a bar graph.
b. a frequency polygon.
c. a line graph.
d. either a bar graph or a line graph.
C
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Which statement regarding testosterone levels in men is MOST accurate?
a. They usually dip after men reach their early twenties. b. They are usually constant throughout life. c. They do not appear to be associated with sex drive. d. They do not appear to be associated with risk-taking behavior.
A parent is trying to increase the time his child spends studying by rewarding the child with a baseball card for each hour he studies. The child does not increase or decrease his study time. This story illustrates the difference between
a. shaping and response chaining. b. rewards and operant reinforcers. c. rewards and operant punishments. d. conditioned and unconditioned responses.
The memory system used to hold small amounts of information for relatively brief time periods of approximately a dozen seconds or so is called __________ memory
a. episodic b. short-term c. long-term d. procedural
Murray describes a force from objects or persons within the environment that helps or hinders a person's efforts to reach a goal as a
a) vector. b) press. c) variable. d) need.