ATI RN
Exam 4 Psychology
1. Daniel is pretending that one of his blocks is a car. Daniel is exhibiting which function?
- A. Abstraction
- B. Preoperational
- C. Overextension
- D. Semiotic
Correct answer: A
Rationale: The correct answer is A: Abstraction. Pretending that a block is a car demonstrates abstraction, where one object is used to represent another. Choice B, Preoperational, refers to Piaget's stage of cognitive development. Choice C, Overextension, involves using a word in a broader context than is appropriate. Choice D, Semiotic, refers to the use of symbols to represent ideas or concepts, which is not directly related to the scenario described in the question.
2. How is binge-eating disorder different from bulimia?
- A. Typically eat much smaller portions before purging the food.
- B. Do not typically purge the food they eat.
- C. Only purge their food after several binge sessions.
- D. Often resort to anorexic methods to rid themselves of the food they have eaten.
Correct answer: B
Rationale: The correct answer is B because individuals with binge-eating disorder do not typically engage in purging behavior, unlike those with bulimia. Choice A is incorrect as individuals with binge-eating disorder do not purge the food they eat, so they do not eat smaller portions before doing so. Choice C is incorrect as they do not purge their food after several binge sessions. Choice D is incorrect as individuals with binge-eating disorder do not resort to anorexic methods to rid themselves of the food they have eaten.
3. During conception, the 23 unpaired chromosomes in the ovum and sperm combine to form 23 pairs in an entirely new cell called the?
- A. Embryo
- B. DNA
- C. Fetus
- D. Zygote
Correct answer: D
Rationale: The correct answer is D, Zygote. A zygote is formed when the 23 chromosomes from the ovum and sperm combine during conception. It is the initial cell formed and marks the beginning of a new organism. Choice A, Embryo, is incorrect as an embryo is formed later in the development process. Choice B, DNA, is incorrect as DNA is the genetic material within the chromosomes but is not the name of the new cell formed after fertilization. Choice C, Fetus, is incorrect as a fetus is the stage of prenatal development that occurs well after the zygote stage.
4. 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.
5. How is pruning best defined?
- A. The process of eliminating unused synapses
- B. The process of synapse development
- C. The connection between neurons
- D. Fatty sheath that wraps around neurons and enables them to transmit information more rapidly
Correct answer: A
Rationale: Pruning is the process of eliminating unused synapses in the brain. This process helps the brain to become more efficient by strengthening important connections and eliminating unnecessary ones. Choice B is incorrect because pruning is about eliminating synapses, not developing them. Choice C is incorrect as it refers to the general concept of connections between neurons, not specifically about pruning. Choice D is incorrect as it describes the myelin sheath, which is responsible for rapid transmission of information along neurons, not pruning.
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