Nursing Elites

1. To study the impact of biological aging on motor skills, researchers focus on __________.

• A. sedentary adults
• B. competitive athletes
• C. men in their mid- to late thirties
• D. women in their childbearing years

Correct answer: B

Rationale: The correct answer is B: competitive athletes. Competitive athletes are often studied by researchers to investigate the impact of biological aging on motor skills because their performance is closely linked to physical abilities. Sedentary adults (choice A) may not provide a clear understanding of the relationship between biological aging and motor skills as they may not engage in consistent physical activity. Men in their mid- to late thirties (choice C) and women in their childbearing years (choice D) may not represent a group where motor skills are as finely tuned and critical to performance as in competitive athletes.

2. During prenatal development, the ectoderm becomes the __________.

• A. muscles and skeleton
• B. nervous system and skin
• C. circulatory system and other internal organs
• D. digestive system, lungs, urinary tract, and glands

Correct answer: B

Rationale: The correct answer is B: nervous system and skin. The nervous system, which includes the brain, spinal cord, and nerves, as well as the skin, develop from the ectoderm layer of cells during prenatal development. Choice A is incorrect because muscles and skeleton develop from mesoderm. Choice C is incorrect because the circulatory system and other internal organs develop from mesoderm and endoderm. Choice D is incorrect because the digestive system, lungs, urinary tract, and glands develop from endoderm.

3. Dr. Dias's research shows that the death of a spouse in old age is correlated with a decline in the surviving partner's physical health. Which conclusion is supported by this study?

• A. The death of a spouse causes a decline in the surviving partner's physical health.
• B. The death of a spouse is related to a decline in the surviving partner's physical health.
• C. A decline in a surviving partner's physical health can cause the death of a spouse.
• D. A third variable, such as memory loss, causes a surviving partner's decline in physical health following the death of a spouse.

Correct answer: B

Rationale: Dr. Dias's research findings indicate a correlation between the death of a spouse and a decline in the surviving partner's physical health. This correlation suggests a relationship between the two variables, but it does not necessarily imply a direct cause-and-effect relationship. Therefore, the correct conclusion supported by this study is option B - 'The death of a spouse is related to a decline in the surviving partner's physical health.' Option A is too direct in its causation claim, which is not proven by correlation alone. Option C reverses the cause and effect relationship suggested by the research. Option D introduces an unrelated third variable, which is not supported by the study's findings.

4. Three-month-old Jefferson will probably listen longer to __________ than to __________.

• A. pure tones; voices
• B. pure tones; noises
• C. human speech; nonspeech sounds
• D. a foreign language; his native language

Correct answer: C

Rationale: Three-month-old Jefferson will likely listen longer to human speech compared to nonspeech sounds because infants have a natural preference for speech sounds. This preference is believed to be attributed to their biological readiness to learn language and communicate with others. Choice A is incorrect because voices are a form of human speech, which is preferred over pure tones. Choice B is incorrect as noises do not necessarily engage infants' attention as effectively as human speech. Choice D is incorrect because Jefferson is more likely to listen longer to his native language rather than a foreign language at this early age.

5. Jade spent two years in a Mexican-American community studying communication between parents and children. Jade was using __________.

• A. naturalistic observation
• B. ethnography
• C. self-reports
• D. structured observation

Correct answer: B

Rationale: Jade was using ethnography. Ethnography involves the systematic study of people and cultures through participant observation and interviews. In this case, Jade spent two years in a Mexican-American community studying communication between parents and children, which aligns with the methodology of ethnography. Ethnography allows researchers to gain an in-depth understanding of a particular cultural group's behaviors, practices, and beliefs. Choice A, naturalistic observation, involves observing subjects in their natural environment without interference or manipulation. While similar to ethnography in some aspects, naturalistic observation does not typically involve the same level of cultural immersion and participant interaction as ethnography. Choice C, self-reports, refers to data collected directly from participants about their thoughts, feelings, or behaviors. This method relies on participants' subjective responses and may not provide the same depth of cultural insights as ethnography. Choice D, structured observation, involves observing behavior in a structured and controlled environment. Unlike ethnography, structured observation does not focus on the cultural nuances and immersive study of a specific community.

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