Women who __________ tend to reach menopause earlier.

Correct Answer: C

Rationale: The correct answer is C: 'have not borne children.' Women who have not borne children may experience menopause earlier due to lower levels of certain reproductive hormones. Having two or more children (choice A) is not typically associated with reaching menopause earlier. Smoking (choice B) is known to have negative effects on menopause but does not necessarily cause it to happen earlier. Borne twins (choice D) is a specific scenario and not a general factor influencing the timing of menopause.

Correct Answer: B

Rationale: A circular reaction is a process where an infant repeats a specific action to explore and learn about the environment through their own motor activity. This repetition helps the infant to understand the consequences of their actions and build cognitive schemes. Sensorimotor reflex (choice A) refers to automatic responses to stimuli, not a purposeful repetition of actions to learn. Mental representation (choice C) involves internal cognitive structures to represent objects or events in the mind, which is different from the repetitive behavior described in the question. Goal-directed behavior (choice D) is purposeful and intentional, unlike the repetitive nature of circular reactions in infants' learning process.

Correct Answer: B

Rationale: The correct answer is B. Fraternal twins are no more alike than ordinary siblings because they share about 50% of their genes, just like other siblings. Choice A is incorrect as fraternal twins are not genetically identical. Choice C is incorrect as fraternal twins are actually the most common type of multiple offspring. Choice D is incorrect as the likelihood of fraternal twins is not affected by the number of births a mother has had.

Correct Answer: B

Rationale: According to the cognitive perspective of perceptual development, babies impose meaning on what they perceive. This means that babies actively interpret and make sense of the stimuli they encounter. Choice A is incorrect because babies are not seen as blank slates in this context; they actively engage with their environment. Choice C is incorrect as babies do not necessarily search for discontinuous stimuli, but rather interpret what they perceive. Choice D is incorrect as seeking variant features in the environment is not a core concept of the cognitive perspective of perceptual development.

Correct Answer: C

Rationale: According to Erikson's psychosocial theory, the danger in middle childhood is 'inferiority.' During this stage, children may develop a sense of inadequacy and inferiority if they are unable to master the social and academic tasks expected of them. This feeling of inferiority can lead to low self-esteem and pessimism about their abilities. Choice A, 'shame,' is more closely associated with Erikson's stage of autonomy vs. shame and doubt in early childhood. Choice B, 'mistrust,' is linked to Erikson's stage of trust vs. mistrust in infancy. Choice D, 'despair,' is related to Erikson's stage of integrity vs. despair in late adulthood.