ATI RN

1. Etiology refers to ________

• A. a condition that tends to maintain maladaptive behavior.
• B. the causal pattern of a disorder.
• C. a predisposition toward developing a disorder.
• D. a condition that makes it less likely a person will experience the negative consequences of stress.

Correct Answer: B

Rationale: Etiology refers to the causal pattern of a disorder, explaining the factors contributing to the development of a specific condition. Choice A is incorrect as it describes a condition that maintains maladaptive behavior, which is not the definition of etiology. Choice C is incorrect as it refers to a predisposition, which is more related to risk factors rather than the cause itself. Choice D is incorrect as it discusses a condition that reduces the negative consequences of stress, which is not directly related to the cause of a disorder.

2. If having a gene for Parkinson's disease guarantees that Parkinson's disease will develop, the gene is a ________.

• A. risk factor
• B. necessary cause
• C. sufficient cause
• D. contributory cause

Correct Answer: B

Rationale: The correct answer is B: necessary cause. A necessary cause is an essential factor for the disorder to occur. In this scenario, if having a gene for Parkinson's disease guarantees the development of the disease, then the gene is a necessary cause. Choice A, 'risk factor,' implies an increased likelihood of developing the disease but does not indicate certainty. Choice C, 'sufficient cause,' indicates that the gene alone can bring about the disease, which is not necessarily true in this context. Choice D, 'contributory cause,' suggests that the gene plays a part in causing the disease but is not essential for its development.

3. An inborn trait that is relatively permanent and differentiates one person from another is known as ________.

• A. genotype
• B. phenotype
• C. temperament
• D. characteristic

Correct Answer: C

Rationale: Temperament is the correct answer because it refers to an individual's inborn, relatively permanent trait that distinguishes one person from another. Genotype (choice A) refers to the genetic makeup of an organism, not necessarily a behavioral trait. Phenotype (choice B) is the observable characteristics of an organism resulting from the interaction between its genotype and the environment. Characteristic (choice D) is a broad term that can encompass various traits and features, but it does not specifically denote an inborn and relatively permanent trait that sets individuals apart.

4. Which of the following statements is true?

• A. Most behavioral disorders are determined exclusively by genes.
• B. Genes play a role in most mental disorders.
• C. Genes do not affect biochemical processes.
• D. The genes that will be expressed in an individual are not affected by experience.

Correct Answer: B

Rationale: The correct answer is B: 'Genes play a role in most mental disorders.' This statement is true as genes do play a significant role in the development of various mental disorders. Choice A is incorrect because most behavioral disorders are influenced by a combination of genetic, environmental, and other factors, not exclusively genes. Choice C is incorrect as genes do affect biochemical processes. Choice D is incorrect because the expression of genes in an individual can be influenced by experiences and environmental factors, a concept known as gene-environment interaction.

5. 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: Normal human cells have twenty-two chromosome pairs and one pair of sex chromosomes. This is the correct answer as it accurately describes the typical chromosome count in human cells. Choice B is incorrect because it mentions 'twenty-one trisomy chromosome pairs,' which is not characteristic of normal cells. Choice C is incorrect as it suggests having 'two trisomy chromosome pairs,' which is abnormal. Choice D is incorrect as it states 'twenty-three chromosome pairs,' which is not the standard count in normal human cells.