ATI RN
Human Growth and Development Final Exam Answers
1. __________ emerges early prenatally and is well-developed at birth.
- A. Visual acuity
- B. Color vision
- C. Depth perception
- D. Sensitivity to touch
Correct answer: D
Rationale: Sensitivity to touch emerges early prenatally and is well-developed at birth. Newborn babies have a well-developed sense of touch, which is crucial for bonding with their caregivers and exploring their environment. This sensitivity to touch helps babies respond to comforting sensations such as gentle strokes and cuddles. Visual acuity, color vision, and depth perception are sensory capabilities that develop and mature after birth, not prenatally. While important for interacting with the environment, they are not as well-developed at birth as sensitivity to touch.
2. Heaven was born several weeks before her due date. Although she was small, her birth weight was appropriate, based on time spent in the uterus. Heaven is a __________ infant.
- A. small-for-date
- B. small-for-weight
- C. mature
- D. preterm
Correct answer: D
Rationale: Heaven is a preterm infant because she was born early, but her weight is appropriate for the time she spent in the womb. Choice A, 'small-for-date,' is incorrect as it does not specifically indicate that the infant was born before the due date. Choice B, 'small-for-weight,' is incorrect because the infant's weight is appropriate for the gestational age. Choice C, 'mature,' is incorrect as it does not reflect the early birth of the infant.
3. Low-level radiation, resulting from industrial leakage or medical X-rays, __________.
- A. is harmful only when combined with other teratogens
- B. can increase the risk of childhood cancer
- C. rarely causes lasting damage
- D. is safe during the last trimester
Correct answer: B
Rationale: Low-level radiation, whether from industrial leakage or medical X-rays, can increase the risk of childhood cancer by potentially damaging the developing fetus's cells. Even though the risk is relatively low, it is still a significant concern that should be acknowledged and monitored closely, especially during prenatal development. Choice A is incorrect as low-level radiation can still be harmful on its own without the need to be combined with other teratogens. Choice C is incorrect because low-level radiation exposure can indeed cause lasting damage, especially in the context of childhood cancer risk. Choice D is incorrect because low-level radiation exposure, even during the last trimester, can pose risks to the developing fetus and is not considered entirely safe.
4. Adults often provide indirect feedback about grammar by using __________, which restructures inaccurate speech into correct form.
- A. fast-mapping
- B. an expansion
- C. overregularization
- D. a recast
Correct answer: D
Rationale: The correct answer is 'a recast.' A recast occurs when an adult rephrases a child's incorrect speech into the accurate form, aiding in the learning of proper grammar. Choice A, 'fast-mapping,' refers to the ability to learn new words quickly; choice B, 'an expansion,' typically involves adding more information to a child's speech; choice C, 'overregularization,' is an error children make when they apply grammatical rules too broadly.
5. 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.
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