Nursing Elites

1. Like longitudinal research, cross-sectional studies can be threatened by __________.

• A. practice effects
• B. participant dropout
• C. sequential timing
• D. cohort effects

Correct answer: D

Rationale: Cross-sectional studies can be threatened by cohort effects because different age groups may have experienced different historical or social contexts, influencing the results. This disparity can lead to invalid comparisons between age groups, confounding the study's findings. Option A, practice effects, refer to changes in participants' behavior due to repeated testing, not a specific threat to cross-sectional studies. Participant dropout (Option B) is a threat related to attrition in longitudinal studies, not cross-sectional studies. Sequential timing (Option C) does not pose a threat to cross-sectional studies; instead, it refers to the order of tasks in a study design.

2. Dana is pregnant with her first child and wonders how much weight she should gain during the pregnancy. You should recommend a healthy diet that results in a weight gain of __________ pounds.

• A. 10 to 15
• B. 15 to 20
• C. 25 to 30
• D. 35 to 40

Correct answer: C

Rationale: The recommended weight gain during pregnancy depends on the pre-pregnancy weight of the mother. For a woman with a normal pre-pregnancy BMI, the recommended weight gain is typically between 25 to 30 pounds. This range is considered healthy to support the growth and development of the baby while also maintaining the mother's health. Choices A, B, and D are incorrect as they represent weight gain ranges that are either too low or too high for a woman with a normal pre-pregnancy BMI, which could pose health risks for both the mother and the baby. It is crucial to adhere to healthcare professionals' guidelines to ensure a healthy pregnancy and birth outcome.

3. Dr. McBride wants to know if the teacher's use of encouragement in the classroom affects the children's self-esteem. To assign children to treatment conditions, Dr. McBride should __________.

• A. carefully distribute the children according to their test scores
• B. divide the children so each group has an equal number of boys and girls
• C. draw the children's names out of a hat
• D. assign the quieter children to the same treatment condition

Correct answer: C

Rationale: Drawing the children's names out of a hat is a way to randomly assign them to treatment conditions. Random assignment helps to ensure that any differences in self-esteem that may be observed in the study are not due to pre-existing characteristics of the children. This method helps to establish a cause-and-effect relationship between the teacher's use of encouragement and the children's self-esteem. Choice A is incorrect because assigning children based on test scores may introduce bias into the study. Choice B is incorrect as balancing gender is not relevant to the research question. Choice D is incorrect as it introduces a bias by selecting a specific group of children based on a characteristic unrelated to the study objective.

4. A childbirth leave of __________ predicts favorable maternal physical and mental health, supportive marital interaction, and sensitive caregiving.

• A. 6 weeks
• B. 8 weeks
• C. 10 weeks
• D. 12 weeks or more

Correct answer: D

Rationale: Research indicates that a childbirth leave of 12 weeks or more leads to favorable outcomes for maternal physical and mental health, supportive marital interaction, and sensitive caregiving. This extended period of leave allows mothers to recover physically, adjust psychologically, and establish strong bonds with their newborn, which ultimately benefits the whole family. Choices A, B, and C are incorrect as they do not provide the optimal duration needed for mothers to experience the full range of benefits associated with an extended childbirth leave.

5. Max, age 65, learned to play the piano at a local senior center. Max demonstrates that __________.

• A. aging is an eventual 'shipwreck'
• B. learning follows a predictable timetable
• C. development is plastic at all ages
• D. musical talent peaks in late adulthood

Correct answer: C

Rationale: Max, age 65, learning to play the piano at a local senior center demonstrates that development is plastic at all ages. This means that individuals have the potential to learn and grow regardless of their age, showing that it is never too late to acquire new skills and experiences. Choice A is incorrect because it presents a negative view of aging, which is not supported by Max's actions. Choice B is incorrect as it implies that learning is restricted to certain age periods, which is contradicted by Max's experience. Choice D is incorrect because Max's learning of the piano at 65 suggests that musical talent can be developed at any age, not necessarily peaking in late adulthood.

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