Which of the following is NOT correct regarding the biological contributions of aggressive behavior?
a. Fraternal twins are usually more alike in their levels of physical aggression than are identical twins.
b. Children who are temperamentally difficult are more likely to be aggressive.
c. Boys with higher levels of testosterone are more often irritable.
d. Aggressive behavior is more likely if there is a deficit in the neurotransmitters that inhibit aggressive behavior.
a
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According to Erikson, which stage of development occurs between the ages of 3 to 6?
a. Trust vs. mistrust b. Autonomy vs. shame and doubt c. Initiative vs. guilt d. Industry vs. inferiority
Jessica's mother is afraid of snakes. Although Jessica has never actually seen a snake, her mother has told her time and again to be careful to look out for them when she is walking. Now Jessica has an intense fear of snakes and refuses to walk in the grass. This is an example of __________.
A. vicarious conditioning of a phobia B. classical conditioning of a phobia C. operant conditioning of a phobia D. unconscious displacement of anxiety onto a phobic object
If the shape of a frequency distribution is lopsided, with a long tail projecting longer to the right than to the left, how would the distribution be skewed?
a. Normally b. Negatively c. Positively d. Average
What is the probability of randomly selecting a z-score less than z = 1.25 from a normal distribution?
a. 0.8944 c. 0.3944 b. 0.1056 d. 0.2112