Nursing Elites

1. The yolk sac __________.

• A. forms during the third trimester of pregnancy
• B. is the outer ring of cells that surrounds the blastocyst Copyright © 2018 Laura E. Berk. All Rights Reserved. 3 Test Bank for Berk, Development Through the Lifespan, 7e
• C. produces blood cells until the organs are mature enough to take over this function
• D. contains one large vein that delivers blood loaded with nutrients and two arteries that remove waste Answer: C Page Ref: 77 Skill Level: Understand Topic: Prenatal Development Difficulty Level: Moderate

Correct answer: C

Rationale: The yolk sac is an extraembryonic membrane that plays a significant role in the early development of the embryo. One of its functions is to produce blood cells until the organs are mature enough to take over this function. This process occurs during the early stages of prenatal development to support the growing embryo before it can sustain itself independently.

2. 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.

3. In ecological systems theory, how does Toby's move just before entering fourth grade represent a significant change in his life?

• A. Microsystem
• B. Mesosystem
• C. Exosystem
• D. Chronosystem

Correct answer: D

Rationale: In ecological systems theory, the chronosystem refers to the dimension of time and how events and transitions over time can influence an individual's development. Toby's move just before entering fourth grade represents a significant change in his life that falls under the chronosystem. The microsystem involves the immediate environments and relationships that directly influence an individual, the mesosystem relates to connections between these environments, and the exosystem includes external settings that indirectly influence the individual, such as parents' workplaces. Therefore, Toby's move best exemplifies a change in the chronosystem due to the temporal influence on his development.

4. 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.

5. __________ theory was the first to stress the influence of the early parent‒child relationship on development.

• A. Darwin’s
• B. Freud’s
• C. Erikson’s
• D. Watson’s Answer: B Page Ref: 15 Skill Level: Remember Topic: Mid-Twentieth-Century Theories Difficulty Level: Easy

Correct answer: B

Rationale: Freud's theory was the first to stress the influence of the early parent‒child relationship on development. Sigmund Freud's psychoanalytic theory emphasized the importance of the child's interactions with caregivers, particularly during the early stages of development, in shaping personality and behavior.

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