Question 1

Which of the following best describes the main advantage of using twin studies in behavioral genetics?

Accepted Answer

They help distinguish the influence of genetics from environment by comparing monozygotic and dizygotic twins.

Question 2

A researcher wants to determine whether a specific brain region is necessary for memory formation. Which research technique would best allow them to infer causality?

Accepted Answer

Lesioning the brain region in animal models and observing memory changes

Question 3

Which of the following is a key ethical concern when using deception in psychological research?

Accepted Answer

Deception can undermine informed consent if not properly managed.

Question 4

In a family study, researchers find that a trait is more similar among biological relatives than among adoptive relatives. What does this suggest about the trait?

Accepted Answer

The trait is likely influenced more by genetic factors.

Question 5

Which brain imaging technique is best suited for visualizing white matter tracts in the brain?

Accepted Answer

Diffusion Tensor Imaging (DTI)

Question 6

A scientist is interested in the function of a specific brain area. Which method would allow them to temporarily disrupt activity in that area in human participants?

Accepted Answer

Transcranial Magnetic Stimulation (TMS)

Question 7

Which of the following best describes the difference between correlational and experimental research?

Accepted Answer

Experimental research can establish causality, while correlational research cannot.

Question 8

What is the primary purpose of using a control group in an experiment?

Accepted Answer

To provide a baseline for comparison to determine the effect of the independent variable.

Question 9

Which of the following is a limitation of using animal models in neuroscience research?

Accepted Answer

Findings from animal models may not always generalize to humans.

Question 10

A researcher is interested in the electrical activity of the brain during sleep. Which technique should they use?

Accepted Answer

Electroencephalography (EEG)

Question 11

Which of the following best describes the function of a hypothesis in scientific research?

Accepted Answer

A hypothesis is a testable prediction that can be supported or refuted by data.

Question 12

Which of the following is a potential risk of using stem cell therapy in humans?

Accepted Answer

Stem cell therapies may form tumors or be rejected by the immune system.

Question 13

Which of the following equations represents the calculation of heritability ($$h^2) in $$twin studies?

Accepted Answer

$$h^2 = 2(r$$_{MZ} - r_{DZ})$$

Question 14

Which of the following best describes the main ethical principle of 'informed consent' in research?

Accepted Answer

Participants must be fully informed about the study and voluntarily agree to participate.

Question 15

A PET scan is primarily used to:

Accepted Answer

Measure brain activity by detecting radioactive tracers.

Question 16

Which of the following is a major challenge of family studies in genetic research?

Accepted Answer

Family studies cannot distinguish between genetic and environmental influences.

Question 17

Which of the following statements about MRI is correct?

Accepted Answer

MRI provides high-resolution images of brain structure using magnetic fields.

Question 18

Which of the following best describes the purpose of using a double-blind procedure in research?

Accepted Answer

To ensure that neither the participants nor the experimenters know which group is receiving the treatment, reducing bias.

Question 19

Which of the following is a key difference between EEG and fMRI?

Accepted Answer

EEG measures electrical activity, while fMRI measures changes in blood flow.

Question 20

A researcher is interested in the effects of a new drug on learning in rats. Which of the following would be the best experimental design?

Accepted Answer

Randomly assign rats to a drug group and a control group, then compare learning outcomes.

Chapter 4: The Methods and Ethics of Research in Biological Psychology

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