__________ may heighten the effects of a high-fat diet.
- A. Sex hormones
- B. Over-the-counter medications
- C. Free radicals
- D. Low body weight
Correct Answer: C
Rationale: Free radicals may contribute to oxidative stress, increasing the risk of conditions associated with a high-fat diet. When consuming a high-fat diet, the body may produce more free radicals, leading to oxidative damage. Sex hormones, over-the-counter medications, and low body weight do not directly heighten the effects of a high-fat diet like free radicals do.
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Brain growth is especially dramatic during __________, when the brain more than doubles in size.
- A. the first year
- B. the second year
- C. middle childhood
- D. adolescence
Correct Answer: A
Rationale: Brain growth is especially dramatic during the first year of life when the brain more than doubles in size. This period is characterized by rapid neural development and growth. The brain doesn't double in size during the second year, making choice B incorrect. Middle childhood and adolescence do not represent periods where the brain more than doubles in size, making choices C and D incorrect, respectively.
Children in middle childhood are in Piaget's _______ stage, which extends from about 7 to 11 years.
- A. sensorimotor
- B. preoperational
- C. concrete operational
- D. formal operational
Correct Answer: C
Rationale: The correct answer is C: concrete operational. During the concrete operational stage, children start to engage in logical thinking about concrete events. This stage typically occurs between the ages of 7 to 11 years. Choices A, B, and D are incorrect. The sensorimotor stage (choice A) is the first stage in Piaget's theory, occurring from birth to about 2 years old. The preoperational stage (choice B) follows the sensorimotor stage and occurs roughly from ages 2 to 7 years. The formal operational stage (choice D) is the final stage in Piaget's theory, where abstract thinking and hypothetical reasoning develop, usually beginning around age 11.
Piaget's _________ stage is the most complex period of development.
- A. sensorimotor
- B. preoperational
- C. concrete operational
- D. formal operational
Correct Answer: D
Rationale: The formal operational stage in Piaget's theory is characterized by abstract reasoning, hypothetical thinking, and logical reasoning. This stage represents the most complex period of cognitive development according to Piaget. Choices A, B, and C refer to earlier stages in Piaget's theory and do not involve the level of abstract thinking and logical reasoning seen in the formal operational stage.
Which factor disrupts the brain's regulation of hunger and metabolism?
- A. Self-regulation
- B. Frequent eating out
- C. Reduced sleep
- D. Using screen media
Correct Answer: C
Rationale: Reduced sleep is the correct answer as it affects hormones that regulate hunger and metabolism, leading to increased appetite and weight gain. Self-regulation is not directly related to the brain's regulation of hunger and metabolism. Frequent eating out may impact food choices and portion sizes but is not specifically linked to disrupting the brain's regulation. Using screen media can affect sleep patterns but is not as directly related to the brain's regulation of hunger and metabolism as reduced sleep.
Infants engage in __________ by actively seeking emotional information from a trusted person in an uncertain situation.
- A. self-control
- B. give-and-take
- C. emotional self-regulation
- D. social referencing
Correct Answer: D
Rationale: The correct answer is 'social referencing.' Social referencing is a behavior where infants seek emotional information from a trusted person, usually a caregiver, to determine how to respond in uncertain situations. This process helps infants regulate their emotions and behaviors based on the cues they receive from the trusted individual. Choices A, B, and C are incorrect because self-control, give-and-take, and emotional self-regulation do not specifically involve seeking emotional information from others in uncertain situations, as social referencing does.