how do early life experiences shape brain development and behavior

ATI RN

Psychology 2301 Exam 1

1. How do early life experiences shape brain development and behavior?

A. Early life experiences have no impact on brain development.
B. Early life experiences are crucial in shaping brain development and later behavior.
C. Early life experiences are not significant in brain development.
D. Early life experiences are easily overcome by adulthood.

Correct answer: B

Rationale: Early life experiences are crucial in shaping brain development and later behavior. These experiences play a significant role in laying the foundation for future mental health and behavior. Choice A is incorrect because early life experiences do have a profound impact on brain development. Choice C is incorrect as early life experiences are indeed significant in brain development. Choice D is incorrect as early life experiences can have lasting effects into adulthood.

2. The four parenting styles described in the text differ along two dimensions: warmth and control. The style associated with the most positive developmental outcome is best described as in warmth and in control.

A. high; low
B. low; low
C. high; moderately high
D. low; moderately high

Correct answer: C

Rationale: The correct answer is C: 'high in warmth and moderately high in control.' The authoritative parenting style, associated with the most positive developmental outcomes, is characterized by high levels of warmth and support coupled with moderately high levels of control. This balance allows children to develop independence while feeling secure and valued. Choices A, B, and D are incorrect because the authoritative style is not characterized by low warmth or low control, but rather high warmth and moderate control.

3. Normal human cells have ________

A. twenty-two chromosome pairs and one pair of sex chromosomes.
B. twenty-one trisomy chromosome pairs, one autosomal pair, and one pair of sex chromosomes.
C. twenty-one chromosome pairs and two trisomy chromosome pairs.
D. twenty-three chromosome pairs.

Correct answer: A

Rationale: Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This is the correct answer as it accurately describes the typical chromosome count in human cells. Choice B is incorrect because it mentions 'twenty-one trisomy chromosome pairs,' which is not characteristic of normal cells. Choice C is incorrect as it suggests having 'two trisomy chromosome pairs,' which is abnormal. Choice D is incorrect as it states 'twenty-three chromosome pairs,' which is not the standard count in normal human cells.

4. What did Freud believe about castration anxiety among boys?

A. Results in penis envy.
B. Dissolves the Oedipus complex.
C. Cognitive; learning.
D. Biological; ecological.

Correct answer: B

Rationale: Freud believed that castration anxiety among boys leads to the resolution of the Oedipus complex, not penis envy or cognitive learning. The Oedipus complex is a central psychodynamic concept in Freudian theory, where boys develop unconscious desires for their mothers and view their fathers as rivals, fearing castration by their fathers as a consequence.

5. How is pruning best defined?

A. The process of eliminating unused synapses
B. The process of synapse development
C. The connection between neurons
D. Fatty sheath that wraps around neurons and enables them to transmit information more rapidly

Correct answer: A

Rationale: Pruning is the process of eliminating unused synapses in the brain. This process helps the brain to become more efficient by strengthening important connections and eliminating unnecessary ones. Choice B is incorrect because pruning is about eliminating synapses, not developing them. Choice C is incorrect as it refers to the general concept of connections between neurons, not specifically about pruning. Choice D is incorrect as it describes the myelin sheath, which is responsible for rapid transmission of information along neurons, not pruning.