the most fleeting state of arousal is
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ATI RN

Human Growth and Development Final Exam

1. Which state of arousal is considered the most fleeting?

Correct answer: D

Rationale: Quiet alertness is indeed the most fleeting state of arousal. This state is characterized by a newborn infant being awake, calm, and attentive, but it is short-lived and transitions quickly to other states of arousal. Regular sleep, REM sleep, and drowsiness are not considered as brief and transitional as quiet alertness in newborn infants.

2. In the eighth month of pregnancy, what typically happens?

Correct answer: D

Rationale: In the eighth month of pregnancy, lanugo typically is shed. Lanugo is the fine, downy hair that covers a fetus's body to help regulate body temperature while in the womb. By the eighth month, many fetuses shed this hair as they prepare for birth. Choices A, B, and C are incorrect because fetal growth doubling, neuron production increasing, and the formation of eyes, ears, nose, jaw, and neck occur in earlier stages of pregnancy, not specifically in the eighth month.

3. When classmates are asked to rate each other's likability, __________ children get many positive votes, whereas __________ children are seldom mentioned.

Correct answer: A

Rationale: The correct answer is A: 'popular; neglected.' Popular children are well-liked by their peers, hence they receive many positive votes. Neglected children, on the other hand, are often overlooked or ignored, resulting in them being seldom mentioned. Choice B is incorrect because neglected and rejected have different meanings. Choice C is incorrect as popular and rejected do not align with the likability context provided in the question. Choice D is incorrect as controversial does not directly relate to likability in the context of the question.

4. In an experimental study examining whether children who are read to more often score higher on vocabulary tests in first grade, the independent variable would be the __________.

Correct answer: A

Rationale: In an experimental study, the independent variable is the factor being manipulated or controlled by the researcher. In this case, the frequency of read-alouds is the variable that researchers would intentionally change or vary to see its effect on the dependent variable, which is the children's vocabulary scores. The other options (B. type of books parents read, C. child's vocabulary score, and D. difficulty of vocabulary words) are not the independent variable in this study as they are either irrelevant or are the outcome being measured.

5. During which period does the germinal period occur?

Correct answer: C

Rationale: The germinal period lasts about two weeks and occurs during the first two weeks of pregnancy. This is the time when the fertilized egg implants into the uterus and begins to divide rapidly. It is followed by the embryonic period, which lasts from about week 3 to week 8 of pregnancy. Choice A is incorrect because the germinal period happens in the early stages of pregnancy, not the second trimester. Choice B is incorrect because the germinal period typically lasts about two weeks, not six. Choice D is incorrect because the germinal period is an early stage of pregnancy and not the final period of a 38-week pregnancy.

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