Nursing Elites

1. What is the result when a single zygote separates into two parts, each developing into a separate individual?

• A. Dizygotic twin
• B. Monozygotic twin
• C. Fraternal twin
• D. Nonidentical twin

Correct answer: B

Rationale: The correct answer is B, Monozygotic twin. A monozygotic twin, also known as an identical twin, is the result when a single zygote splits into two parts, leading to the development of two genetically identical individuals. Choices A, C, and D are incorrect because they do not accurately describe the scenario where a single zygote splits into two parts to form identical twins. Dizygotic twin (Choice A) refers to fraternal twins, which result from two separate eggs fertilized by two different sperm cells. Fraternal twin (Choice C) is another term for dizygotic twins, arising from two separate zygotes. Nonidentical twin (Choice D) is a synonymous term for dizygotic or fraternal twins, indicating that they are not genetically identical.

2. Why is it particularly useful to study identical twins who were raised in different environments?

• A. Differences in brain function can be easily identified.
• B. Concordance rates tend to be higher.
• C. It is possible that the genetics of twins who have been separated have changed in ways to explain any differences found.
• D. It is possible that high concordance rates between identical twins reared together are due to their being treated more similarly than nonidentical twins.

Correct answer: D

Rationale: Studying identical twins raised in different environments allows researchers to understand the impact of genetics versus environmental factors on traits. Choice A is incorrect because differences in brain function can be influenced by a variety of factors and not solely by environmental differences. Choice B is incorrect as concordance rates tend to be higher in identical twins reared together due to shared genetics and environment. Choice C is incorrect because genetics do not change due to being raised in different environments.

3. What impact do parenting styles have on child development?

• A. Authoritarian parenting leads to positive developmental outcomes.
• B. Permissive parenting is associated with positive developmental outcomes.
• C. Neglectful parenting is associated with positive developmental outcomes.
• D. All parenting styles produce similar developmental outcomes.

Correct answer: B

Rationale: Permissive parenting is associated with positive developmental outcomes because it involves warmth and a lack of strict control. Authoritarian parenting, as mentioned in choice A, is characterized by strict rules and harsh discipline, which may not lead to the best developmental outcomes. Neglectful parenting, as in choice C, involves a lack of responsiveness and support, which can have detrimental effects on a child's development. Choice D is incorrect because different parenting styles can have varying impacts on child development.

4. Undercontrolled behavior tends to be seen in American children, whereas overcontrolled behavior is seen in Thai children.

• A. Aggressive behavior; calm behavior
• B. Overcontrolled behavior; undercontrolled behavior
• C. Undercontrolled behavior; overcontrolled behavior
• D. Equal behavioral traits in both cultures.

Correct answer: C

Rationale: The correct answer is C: 'Undercontrolled behavior; overcontrolled behavior.' The question highlights a cultural difference in behavior tendencies between American and Thai children. American children are usually characterized by undercontrolled behavior, while Thai children tend to exhibit overcontrolled behavior. Choice A (Aggressive behavior; calm behavior) is incorrect as the question does not mention aggressive or calm behavior as the contrasting traits between the two groups. Choice B (Overcontrolled behavior; undercontrolled behavior) is incorrect because the described behavior patterns are reversed based on the question's context. Choice D (Equal behavioral traits in both cultures) is incorrect as the question explicitly states differing behavior patterns in American and Thai children.

5. In schizophrenia, what is the term used to describe the symptom where individuals exhibit peculiar hand and limb movements or adopt unusual postures for long periods of time?

• A. Catatonia
• B. Loose association
• C. Disorganized speech
• D. Blunted affect

Correct answer: A

Rationale: The correct answer is A: Catatonia. Catatonia is a symptom seen in some cases of schizophrenia, characterized by motor abnormalities such as peculiar hand and limb movements or adopting unusual postures for extended periods. Choice B, Loose association, refers to a thought disorder where ideas shift from one subject to another in an unrelated way. Choice C, Disorganized speech, is characterized by incoherent or incomprehensible speech patterns. Choice D, Blunted affect, describes a reduction in the intensity of emotional expression.

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