Nursing Elites

1. Researchers randomly assigned adolescents to either a single-grade classroom or a mixed-age classroom. This is an example of a __________.

• A. naturalistic observation
• B. case study
• C. natural experiment
• D. field experiment

Correct answer: D

Rationale: In this scenario, the researchers randomly assigned adolescents to either a single-grade classroom or a mixed-age classroom, which is an example of a field experiment. A field experiment involves manipulating independent variables in a natural setting to observe the effects on participants. This design allows for more control over variables compared to naturalistic observation, case studies, or natural experiments. Naturalistic observation involves observing subjects in their natural environment without manipulating any variables. A case study focuses on in-depth analysis of a single individual or a small group. A natural experiment involves observing naturally occurring events without intervention or manipulation by the researcher.

2. Observations of imprinting led to which major concept in human development?

• A. adaptation
• B. equilibrium
• C. the critical period
• D. classical conditioning

Correct answer: C

Rationale: Observations of imprinting in animals, such as ducklings following the first moving object they see after hatching, led to the major concept of the critical period in human development. The critical period is a specific time frame during which an organism must experience certain stimuli to develop properly. This concept has been influential in understanding various aspects of human development, such as language acquisition and social attachment. Choices A, B, and D are incorrect. Adaptation refers to adjusting to the environment, equilibrium is about balance in cognitive processes, and classical conditioning is a learning process associated with behaviorism, none of which directly relate to the concept derived from imprinting observations.

3. During pregnancy, the placenta __________.

• A. forms in the second trimester of pregnancy
• B. encloses the developing organism in amniotic fluid
• C. contains one large vein that delivers nutrients to the embryo
• D. delivers food and oxygen to the developing organism

Correct answer: D

Rationale: The placenta delivers food and oxygen to the developing organism during pregnancy. It is a temporary organ that forms in the first trimester of pregnancy. Choice A is incorrect as the placenta forms in the first trimester, not the second trimester. Choice B is incorrect as the amniotic sac, not the placenta, encloses the developing organism in amniotic fluid. Choice C is incorrect as the placenta contains blood vessels (arteries and veins) that deliver nutrients to the embryo, not just one large vein.

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. Which expectant mother has the greatest risk of a baby born with fetal alcohol syndrome?

• A. Chloe, a Caucasian American
• B. Latima, an African American
• C. Yvonne, a Native American
• D. Ming, an Asian American Answer: C Page Ref: 85 Skill Level: Apply known or suspected teratogens. Topic: Prenatal Environmental Influences Difficulty Level: Moderate

Correct answer: C

Rationale: According to research, Native American populations have the highest prevalence of fetal alcohol syndrome (FAS) in the United States. This increased risk is due to various social, cultural, and environmental factors within Native American communities.

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