neural plasticity is

ATI RN

Psychology 2301 Exam 1

1. Neural plasticity is ________.

A. the process by which neurotransmitters are broken down in the brain.
B. the flexibility of the brain—existing neural circuits can change or new ones can be made.
C. strong evidence of brain damage, leading to the development of a mental disorder.
D. the best indicator of temperament and its effect on the personality development of a child.

Correct answer: B

Rationale: Neural plasticity refers to the brain's flexibility to change existing neural circuits or create new ones. Choice A is incorrect as it describes neurotransmitter breakdown, not neural plasticity. Choice C is incorrect because neural plasticity does not necessarily indicate brain damage leading to mental disorders. Choice D is incorrect because neural plasticity is not specifically related to temperament or personality development in children.

2. What is extinction, and how might it be used in treating a disorder?

A. Extinction strengthens the conditioned response by continuously pairing the conditioned stimulus with the unconditioned stimulus.
B. Extinction is the process of eliminating a conditioned response by repeatedly presenting the conditioned stimulus without the unconditioned stimulus.
C. Extinction is ineffective and is not used in treating disorders.
D. Extinction is the process of intensifying the conditioned response by pairing the conditioned stimulus with a stronger unconditioned stimulus.

Correct answer: B

Rationale: Extinction is the process of eliminating a conditioned response by repeatedly presenting the conditioned stimulus without the unconditioned stimulus. This process helps in reducing or eliminating undesired behaviors or responses. Choice A is incorrect because extinction weakens the conditioned response by breaking the association between the conditioned stimulus and the unconditioned stimulus. Choice C is incorrect as extinction is a widely used technique in behavioral therapies for treating disorders. Choice D is incorrect as extinction aims to reduce the conditioned response, not intensify it.

3. In order for one to have a recessive trait (e.g., having red hair), the person must receive?

A. At least one copy of a recessive gene from a parent
B. Two copies of a recessive gene, one from each parent
C. At least one copy of a recessive gene and at least one copy of a dominant gene
D. At least two copies of a recessive gene from one parent

Correct answer: B

Rationale: Recessive traits are expressed when an individual inherits two copies of the recessive gene, one from each parent. Therefore, the correct answer is B. Choice A is incorrect as one copy of a recessive gene is not sufficient to display a recessive trait. Choice C is incorrect because having at least one copy of a dominant gene is unrelated to expressing a recessive trait. Choice D is incorrect because two copies of a recessive gene must come from both parents, not just one.

4. Strict behaviorists would be most sympathetic to which one of the following statements?

A. Human behavior is primarily caused by inherited factors.
B. Human behavior is primarily caused by environmental factors.
C. Human behavior is primarily caused by equal contributions of inherited and environmental factors.
D. No one really knows the primary causes for human behavior.

Correct answer: B

Rationale: Strict behaviorists, who adhere to behaviorism, believe that human behavior is primarily influenced by environmental factors. This perspective asserts that individuals' actions and responses are shaped by their interactions with the environment, learning experiences, and external stimuli. Choice A is incorrect because strict behaviorists do not focus on inherited factors but on how behavior is learned and shaped through environmental influences. Choice C is also incorrect as behaviorists do not believe in equal contributions of inherited and environmental factors; they emphasize environmental determinants. Choice D is incorrect as behaviorists have a clear stance that behavior is influenced by environmental stimuli and learning experiences.

5. A predisposition toward developing a disorder is termed a __________ .

A. Diathesis
B. Risk factor
C. Sufficient cause
D. Diathesis

Correct answer: A

Rationale: A predisposition toward developing a disorder is termed a diathesis. In this context, diathesis refers to an individual's susceptibility or predisposition to developing a disorder. A diathesis is not the same as a risk factor or a sufficient cause. A risk factor is a variable that increases the likelihood of developing a disorder but is not a predisposition itself. A sufficient cause is a factor that can produce the disorder on its own, not just a predisposition.