Nursing Elites

1. In a correlational design, researchers __________.

• A. gather information on individuals without altering their experiences
• B. divide events and behaviors of interest into two types: dependent and independent variables
• C. use an evenhanded procedure to assign people to two or more treatment conditions
• D. directly control or manipulate changes in the independent variable

Correct answer: A

Rationale: In a correlational design, researchers gather information on individuals without altering their experiences. Correlational studies examine the relationship between two or more variables without any manipulation or control by the researchers. The researchers simply observe and measure the variables of interest without intervening in any way. Choices B, C, and D are incorrect because they describe aspects related to experimental designs rather than correlational designs. In an experimental design, researchers manipulate variables, assign participants to different treatment conditions, and control changes in the independent variable, which is not the case in correlational studies.

2. During the second month of pregnancy, __________.

• A. the umbilical cord first appears as a primitive body stalk
• B. touch sensitivity extends to most of the body
• C. the heart develops separate chambers
• D. the heartbeat can be heard through a stethoscope

Correct answer: C

Rationale: During the second month of pregnancy, the heart of the developing fetus begins to develop separate chambers, forming the structure necessary for a fully functioning heart. This is a significant milestone in the prenatal development process. Choices A, B, and D are incorrect because the appearance of the umbilical cord as a primitive body stalk typically occurs around week 5-6, touch sensitivity extending to most of the body is more characteristic of the end of the second trimester, and the heartbeat is usually detectable through a stethoscope around the 18th to 20th week of pregnancy, not during the second month.

3. What is strongly associated with healthy eating in teenagers?

• A. Vitamin supplementation
• B. Number of hours of sleep
• C. Dieting in adolescence
• D. Frequency of family meals

Correct answer: D

Rationale: The frequency of family meals is strongly associated with healthy eating in teenagers. Research indicates that regular family meals provide structure, promote positive eating behaviors, and offer opportunities for modeling healthy food choices. Vitamin supplementation (Choice A) may be beneficial but is not as strongly linked to healthy eating habits as family meal frequency. The number of hours of sleep (Choice B) is important for overall health but is not as directly associated with healthy eating behaviors in teenagers. Dieting in adolescence (Choice C) can sometimes lead to unhealthy eating patterns and is not necessarily linked to consistently healthy food choices.

4. By the twelfth week of pregnancy, __________.

• A. the sex of the fetus can be detected with ultrasound
• B. the mother can feel the movements of the fetus
• C. the fetus is viable and can survive if born early
• D. synchrony between fetal heart rate and motor activity peaks Answer: A Page Ref: 79 Skill Level: Understand Copyright © 2018 Laura E. Berk. All Rights Reserved. 6 Test Bank for Berk, Development Through the Lifespan, 7e Topic: Prenatal Development Difficulty Level: Moderate

Correct answer: A

Rationale: By the twelfth week of pregnancy, the sex of the fetus can be detected with ultrasound. Ultrasound technology allows for visualization of the developing fetus and identification of physical characteristics, such as sex, during prenatal appointments.

5. In females, the twenty-third pair of chromosomes is labeled as __________.

• A. an autosome
• B. dizygotic
• C. XX
• D. XY

Correct answer: C

Rationale: In females, the twenty-third pair of chromosomes is indeed labeled as XX. This pair of chromosomes determines the biological sex of females. Choice A, 'an autosome,' is incorrect as autosomes refer to the non-sex chromosomes. Choice B, 'dizygotic,' is incorrect as it relates to twins. Choice D, 'XY,' is incorrect as it represents the chromosome pair found in males.

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