Nokea
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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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.
Nearly all adults who were children living in Saigon when the U.S. armed forces left Vietnam in 1975 report that their lives were changed by those events. This exemplifies which of the following?
- A. Normative age-graded influence
- B. Social clock
- C. Critical period
- D. Sensitive period
Correct Answer: C
Rationale: The correct answer is C. This scenario exemplifies a critical period in development. Critical periods are specific times in an individual's life when certain events have a profound impact on their development. In this case, the events surrounding the departure of the U.S. armed forces from Saigon in 1975 had a lasting influence on the children living there at that time. Choices A, B, and D are incorrect. Normative age-graded influence refers to events that are common to people of a particular age group, the social clock relates to the culturally preferred timing of social events, and a sensitive period is a time when an individual is more susceptible to environmental influences but does not result in lifelong consequences as with critical periods.
Which of the following is an example of telegraphic speech?
- A. A child pointed to his father's shoe and said 'daddy,' as if to convey 'daddy's shoe.'
- B. A thirsty toddler said, 'mama water.'
- C. A newborn infant asked, 'Can I have some coffee?'
- D. A baby communicated to her parents using her brain.
Correct Answer: B
Rationale: The correct answer is B. Telegraphic speech is when a child uses a two-word phrase to convey a larger meaning, such as 'mama water.' Choice A is incorrect as it does not demonstrate telegraphic speech but rather a simple labeling. Choice C is incorrect as it is a complete sentence and not a two-word phrase. Choice D is also incorrect as it does not describe telegraphic speech but rather a vague statement about communication.
Unlike other types of anxiety disorders, this one is not triggered by anything specific, hence the name free-floating anxiety.
- A. Social anxiety disorder
- B. Generalized anxiety disorder
- C. Panic disorder
- D. Specific phobia
Correct Answer: B
Rationale: The correct answer is B, Generalized anxiety disorder. Generalized anxiety disorder is characterized by persistent and excessive worry or anxiety that is not triggered by specific situations or objects, hence the term 'free-floating anxiety.' Social anxiety disorder (A) is characterized by fear and anxiety about social situations, panic disorder (C) involves recurrent unexpected panic attacks, and specific phobia (D) is an intense fear of a specific object or situation. Therefore, B is the most appropriate choice in the context of anxiety not being triggered by specific stimuli.
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.