when baby ian is held horizontally on his back he sometimes makes an embracing motion by arching his back extending his legs throwing his arms outward
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Human Growth and Development Final Exam Answers

1. When Baby Ian is held horizontally on his back, he sometimes makes an “embracing” motion by arching his back, extending his legs, throwing his arms outward, and then bringing his arms in toward his body. Ian is demonstrating the __________.

Correct answer: B

Rationale: Baby Ian is demonstrating the Moro reflex. The Moro reflex is a normal newborn reflex that occurs when a baby feels like they are falling or losing support. It is characterized by arching the back, extending the legs, throwing the arms outward, and then bringing the arms in toward the body. This reflex is a primitive survival instinct that typically disappears around 6 months of age. Choice A, palmar grasp, involves the baby's fingers closing around an object when it touches their palm. Choice C, tonic neck reflex, involves the baby assuming a fencing position when their head is turned to one side. Choice D, Babinski reflex, is characterized by the fanning out and curling of the baby's toes when the sole of the foot is stroked.

2. Mothers who __________ have fewer birth complications and shorter labors.

Correct answer: C

Rationale: According to research, mothers who are supported by a trained companion during childbirth have fewer birth complications and shorter labors. This support can reduce stress and anxiety levels, provide comfort and encouragement, and help the mother feel more in control during labor and delivery. Overall, having a trained companion present can contribute to a more positive childbirth experience for the mother. Choices A, B, and D are incorrect because they do not align with the research findings that specifically highlight the benefits of having a trained companion during childbirth.

3. __________ is the least-developed of the newborn baby’s senses.

Correct answer: C

Rationale: Vision is the least-developed of the newborn baby's senses. Newborns have limited visual acuity and are not able to focus clearly on objects. Over time, their vision will improve as they grow and develop.

4. __________ parenting in particular is linked to emerging adults' psychological well-being.

Correct answer: C

Rationale: Autonomy-supportive parenting, which encourages independence and decision-making skills, is positively linked to the psychological well-being of emerging adults. This style of parenting fosters resilience and self-esteem. Overprotective parenting (choice A) may hinder the development of autonomy and problem-solving abilities, leading to increased anxiety. Permissive parenting (choice B) lacks structure and limits, potentially resulting in difficulties with self-regulation. Helicopter parenting (choice D) involves excessive intervention and control, which can impede the development of self-reliance and confidence.

5. Which statement describes a strength of naturalistic observation?

Correct answer: A

Rationale: Naturalistic observation reflects the participants' everyday lives because it involves observing individuals in their natural environments without any manipulation. This allows researchers to see how people behave in real-world settings and can provide valuable insights into their typical behavior patterns. Choice B is incorrect because naturalistic observation focuses on observing behavior in its natural setting rather than comparing responses between participants. Choice C is incorrect as naturalistic observation tends to provide rich, qualitative data rather than a large amount of information in a short time. Choice D is incorrect because in naturalistic observation, participants are observed as they naturally behave, which may not always lead to an equal opportunity for all participants to display the behavior of interest.

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