ATI RN
Psychology 2301 Exam 1
1. A predisposition toward developing a disorder is termed a ________.
- A. diathesis
- B. comorbidity
- C. genotype
- D. phenotype
Correct answer: A
Rationale: A diathesis is indeed the correct term for a predisposition toward developing a disorder. A diathesis refers to an underlying vulnerability or predisposition to a particular condition. Choice B, 'comorbidity,' refers to the presence of two or more disorders in the same individual. Choice C, 'genotype,' relates to an individual's genetic makeup. Choice D, 'phenotype,' refers to the observable characteristics of an organism resulting from the interaction of its genotype with the environment. Therefore, A is the most appropriate term for describing a predisposition toward developing a disorder.
2. What does the genetic study of identical twins reared apart help to clarify?
- A. Differences in brain function
- B. Genetic influence on behavior
- C. Interaction between genetics and environment
- D. The role of environmental factors alone
Correct answer: C
Rationale: The correct answer is C: 'Interaction between genetics and environment.' The genetic study of identical twins reared apart helps in understanding how both genetics and environment play a role in shaping an individual's traits and behaviors. This type of study allows researchers to tease apart the effects of genetic inheritance from those of environmental influences. Choices A, B, and D are incorrect because the study of identical twins reared apart specifically focuses on the interplay between genetics and environment, rather than solely on differences in brain function, genetic influence on behavior, or the role of environmental factors alone.
3. In defining a mental disorder, deviance refers to?
- A. Amount of suffering the individual is experiencing due to the mental disorder
- B. Inability of an individual to fulfill a certain role (e.g., work or family obligation)
- C. The capacity of the individual to cause harm to the people around them
- D. The tendency of an individual to display behaviors that are culturally unexpected
Correct answer: D
Rationale: In defining a mental disorder, deviance refers to behavior that is culturally unexpected or violates social norms. This means that the individual displays behaviors that are not typical or acceptable within their specific culture or society. Choices A, B, and C are incorrect because they do not directly relate to the concept of deviance in the context of defining a mental disorder. The amount of suffering, inability to fulfill a role, or capacity to cause harm are important considerations in understanding mental disorders but are not specifically related to deviance.
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: 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.
5. Which of the following characteristics best describes differences between bulimia nervosa and anorexia nervosa?
- A. Individuals with anorexia nervosa do not have as severe health risks as individuals with bulimia nervosa have.
- B. Individuals with bulimia nervosa may have a normal body weight.
- C. Individuals with anorexia nervosa have been known to binge like those with bulimia nervosa on occasion.
- D. Only those with bulimia nervosa display compensatory behaviors.
Correct answer: B
Rationale: The correct answer is B. Individuals with bulimia nervosa may maintain a normal body weight, while anorexia nervosa is often associated with severe underweight. Choice A is incorrect because individuals with anorexia nervosa actually face severe health risks due to malnutrition, electrolyte imbalances, and other complications. Choice C is incorrect as anorexia nervosa is characterized by restriction of food intake rather than binge eating. Choice D is incorrect as individuals with anorexia nervosa can also display compensatory behaviors such as excessive exercise or fasting.
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