ATI RN
Exam 4 Psychology
1. One key issue in the study of human development is the continuity-discontinuity issue. The discontinuity side posits that development is characterized by change in type or kind. These are known as ____.
- A. Qualitative change
- B. Quantitative change
- C. Maturation
- D. Multidirectional development
Correct answer: A
Rationale: The correct answer is A: Qualitative change. Qualitative change aligns with the discontinuity view by involving changes in type or kind. This contrasts with quantitative change (B), which is about changes in amount or quantity. Maturation (C) refers to the process of becoming fully developed in a particular way, and multidirectional development (D) emphasizes that development involves both gains and losses, not specifically focusing on changes in type or kind.
2. What is the current view of developmentalists regarding important changes throughout the entire human lifespan?
- A. Multicultural perspective
- B. Lifespan perspective
- C. Atypical development
- D. Maturation
Correct answer: B
Rationale: The correct answer is 'Lifespan perspective.' This perspective highlights that significant developmental changes occur throughout a person's entire life, emphasizing continuous growth and development. Choice A, 'Multicultural perspective,' refers to the consideration of cultural influences on development rather than the timeline of changes. Choice C, 'Atypical development,' pertains to deviations from typical developmental patterns and is not directly related to the continuous changes across the lifespan. Choice D, 'Maturation,' specifically refers to the biological process of growth and development, which is different from the broader concept of developmental changes occurring across the lifespan.
3. Which of the following is not a common method for studying genetic influences?
- A. The study of specific gene defects
- B. Twin studies
- C. Adoption studies
- D. Family history (pedigree) studies
Correct answer: A
Rationale: The correct answer is A. Studying specific gene defects is not a common method for investigating genetic influences. Choices B, C, and D are common methods used in genetic research. Twin studies help determine the heritability of traits, adoption studies compare similarities between adopted individuals and their adoptive families versus biological families, and family history studies track the inheritance patterns of traits within families.
4. Normal human cells have ________.
- A. twenty-two chromosome pairs and one pair of sex chromosomes.
- B. twenty-one trisomy chromosome pairs, one autosomal pair, and one pair of sex chromosomes.
- C. twenty-one chromosome pairs and two trisomy chromosome pairs.
- D. twenty-three chromosome pairs.
Correct answer: A
Rationale: The correct answer is A. Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This adds up to a total of 46 chromosomes. Choice B is incorrect as it mentions twenty-one trisomy chromosome pairs, which is not a characteristic of normal human cells. Choice C is also incorrect as it states twenty-one chromosome pairs and two trisomy chromosome pairs, which is not accurate for normal human cells. Choice D is incorrect as it mentions twenty-three chromosome pairs, which is not the correct number for normal human cells.
5. Down syndrome is caused by ________
- A. a chemical imbalance.
- B. a gene on the X chromosome.
- C. possessing an extra X chromosome.
- D. possessing an extra chromosome in chromosome 21.
Correct answer: D
Rationale: Down syndrome is caused by possessing an extra chromosome in chromosome 21, not a chemical imbalance (choice A), a gene on the X chromosome (choice B), or possessing an extra X chromosome (choice C). The presence of an extra copy of chromosome 21, also known as trisomy 21, leads to the characteristic features and health problems associated with Down syndrome.
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