What mechanism prevents or slows some chemicals from entering the brain, while allowing others to enter?
a. a threshold
b. a blood-brain barrier
c. an endoplasmic wall
d. a differential-drug inhibitor
b
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During ____, individuals enter the workforce and learn firsthand about jobs
a. specification b. implementation c. crystallization d. exploration
In research by Pryor and Merluzzi (1985), the script for a first date
a. was more easily recalled by participants with extensive dating experience. b. varied widely by gender, but only when participants relatively experienced. c. varied widely by sexual orientation. d. was similar across cultures.
Dr. Johnston has calculated a correlation between the number of cigarettes smoked per week and the age of his patients at the point of their first heart attack as r = –0.92 . Dr. Johnston and his associates claim there apparently is no relationship between smoking and heart attacks. What error has Dr. Johnson made? a. No error has been made; an r = –0.92 is so close to 0 that there is no
relationship. b. A correlation coefficient this close to –1 means there probably is a relationship, but we probably should do asignificance test just to be sure. c. Not everyone who smokes has a heart attack. d. Dr. Johnston should know there are numerous factors involved when a person has a heart attack.
Which of the following ideas that Piaget had about the formal operational stage is shared by modern psychologists?
a. Adults take mental shortcuts, make estimations, and arrive at conclusions before exhausting all possibilities. b. Formal operational thinking is typically used by adults in daily life. c. Formal operational thinking is rare in cultures where formal schooling is not the norm. d. Formal operational thinking is used in some contexts but not in others.