4D ultrasound has revealed that fetuses yawn, blink, suck their thumbs, cry when disturbed, and move their arms in a coordinated fashion between the third and sixth months. All of these are signs that
a. the fetus is prepared for birth.
b. the fetus engages in a lot of random behavior.
c. the brain is coordinating actions and responses to stimuli.
d. the fetus can hear and see.
Answer: c. the brain is coordinating actions and responses to stimuli.
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The __________ theory maintains that emotion is caused by the interaction of physiological changes and the cognitive labeling of the reason for the physical reaction.
A. James-Lange B. Cannon-Bard C. two-factor D. Yerkes-Dodson
Although there are many definitions and explanations about the concept of temperament, theorists tend to agree about 2 points. What is one of these? a. Theorists focus on the 3 concepts of easy, difficult, and slow-to-warm up. b. Theorists agree that temperament is stable across the lifespan. c. Theorists agree that a primary feature of temperament is the child's positive or negative reaction
toenvironmental stimuli. d. Theorists agree that a primary feature of temperament is the recognition of causal schemes.
During the third year of life, children enter the __________ stage
a. latency c. anal b. oral d. phallic
Research has shown that a person's height is about 81 percent heritable, whereas his or her BMI is about 59 percent heritable. Which of the following is the most accurate interpretation of these findings?
A. The variability we see in a population's height is more influenced by genetic factors than the variability we see in the population's weight. B. Environmental factors account for only 19 percent of a person's height and 41 percent of a person's BMI. C. We cannot make any conclusions about genetic contributions to either height or weight. D. Knowing the relative genetic contributions to traits such as height or weight does not allow us to compare these two unrelated characteristics of people.