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In an experiment, the investigators manipulate variables to learn how one affects another.?
- A. A data-collection method in which participants respond to questions
- B. The entire group that is of interest to a researcher
- C. A detailed description of a single culture or context
- D. A study that tests a causal hypothesis
Correct Answer: D
Rationale: The correct answer is D because in an experimental design, investigators manipulate variables to determine the effect of one on another. This process allows researchers to test causal hypotheses by manipulating one variable while keeping others constant. Choices A, B, and C are incorrect as they do not directly relate to manipulating variables in an experiment.
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Oliver is studying motivation in chimpanzees. His roommate doesn't think that Oliver's research will produce much useful information about human motivation because he believes that information from animal studies will not provide meaningful information about human experiences. Oliver's roommate apparently has?
- A. A humanistic perspective.
- B. An evolutionary perspective.
- C. A biological perspective.
- D. A cognitive perspective.
Correct Answer: A
Rationale: Oliver's roommate holds a humanistic perspective. This perspective emphasizes human uniqueness and may devalue information obtained from animal studies when studying human experiences. The humanistic perspective focuses on subjective experiences, free will, and personal growth, which aligns with his roommate's belief that animal studies won't provide meaningful information about human experiences. Choice B, an evolutionary perspective, would focus on the role of evolution in shaping behavior, not directly related to the roommate's view. Choices C and D, biological and cognitive perspectives respectively, do not directly address the roommate's skepticism toward using animal studies to understand human motivation.
What neurotransmitter was first believed to be the cause of schizophrenia?
- A. GABA
- B. Serotonin
- C. Epinephrine
- D. Dopamine
Correct Answer: D
Rationale: The correct answer is Dopamine. Dopamine was initially thought to be the primary cause of schizophrenia. This neurotransmitter hypothesis was based on the observation that drugs that increase dopamine activity can worsen symptoms of schizophrenia, while drugs that decrease dopamine activity can improve symptoms. Choices A, B, and C are incorrect because GABA, serotonin, and epinephrine were not the neurotransmitters initially believed to be the cause of schizophrenia.
What is a set of age norms defining a sequence of life experiences that is considered normal in a given culture and that all individuals in that culture are expected to follow, which may lead to ____?
- A. Normative age-graded influence; sexism
- B. Social clock; ageism
- C. Critical period; normative age-graded influence
- D. Sensitive period
Correct Answer: B
Rationale: The correct answer is B: Social clock; ageism. A social clock refers to the normal sequence of life events in a culture, and not meeting these norms can result in ageism. Choice A is incorrect because normative age-graded influence is not directly related to sexism. Choice C is incorrect as critical period refers to specific time frames for development, not a set of age norms. Choice D, sensitive period, does not directly relate to the concept described in the question.
Roger has suffered a major brain injury. As a result, he is unable to speak fluently, tends to mispronounce words, and speaks haltingly. For instance, he says 'wat' instead of 'watch' and 'tot' instead of 'talk.' What is the diagnosis?
- A. Agnosia
- B. Spatial neglect
- C. Broca's aphasia
- D. Prosopagnosia
Correct Answer: C
Rationale: The correct diagnosis for Roger's condition is Broca's aphasia. Broca's aphasia is characterized by difficulty in speaking fluently and accurately, often due to brain injury. In this case, Roger's symptoms of being unable to speak fluently, mispronouncing words, and speaking haltingly align with the characteristics of Broca's aphasia. Agnosia refers to the inability to recognize or interpret sensory information, spatial neglect is the lack of awareness of one side of the body or space, and prosopagnosia is the inability to recognize faces, none of which match Roger's symptoms.
What is the result when a single zygote separates into two parts, each developing into a separate individual?
- A. Dizygotic twin
- B. Monozygotic twin
- C. Fraternal twin
- D. Nonidentical twin
Correct Answer: B
Rationale: The correct answer is B, Monozygotic twin. A monozygotic twin, also known as an identical twin, is the result when a single zygote splits into two parts, leading to the development of two genetically identical individuals. Choices A, C, and D are incorrect because they do not accurately describe the scenario where a single zygote splits into two parts to form identical twins. Dizygotic twin (Choice A) refers to fraternal twins, which result from two separate eggs fertilized by two different sperm cells. Fraternal twin (Choice C) is another term for dizygotic twins, arising from two separate zygotes. Nonidentical twin (Choice D) is a synonymous term for dizygotic or fraternal twins, indicating that they are not genetically identical.