Which of the following terms best describes the optimal level of arousal proposed by Yerkes and Dodson?
A. Subjective
B. Innate
C. Controlled
D. Learned
Answer: A
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Your textbook discusses the difference between the words sex and gender. Which of the following differences is correct?
a. Gender refers to animals, whereas sex refers to humans. b. Gender refers to children, whereas sex refers to adolescents and adults. c. Gender is a narrower term than sex. d. Gender refers to psychological characteristics, whereas sex emphasizes biological characteristics.
You call a friend on the phone and repeatedly get sent to voicemail, so you continue to call her every 5–20 minutes hoping to speak to her personally. Which reinforcement schedule is this?
The following, 
. represents ______.
A. the marginal means B. the main means C. the variance means D. the grand mean
As the level of significance is changed from .01 to .05, the probability of making a type I error increases and the probability of making a type II error decreases
Indicate whether the statement is true or false