Question 1

Which of the following best describes the difference between an independent variable and a dependent variable in an experimental study?

Accepted Answer

The independent variable is manipulated by the researcher, while the dependent variable is measured as the outcome.

Question 2

A researcher is studying the effect of sleep deprivation on memory recall. In this experiment, what is the independent variable?

Accepted Answer

The amount of sleep deprivation participants experience.

Question 3

Which neurotransmitter is most closely associated with mood regulation and is often targeted by antidepressant medications?

Accepted Answer

Serotonin

Question 4

Damage to which lobe of the brain is most likely to result in difficulties with planning, decision-making, and impulse control?

Accepted Answer

Frontal lobe

Question 5

A patient is unable to form new memories after a brain injury. Which brain structure is most likely damaged?

Accepted Answer

Hippocampus

Question 6

Which of the following best describes the function of myelin in the nervous system?

Accepted Answer

It insulates axons to speed up the transmission of electrical impulses.

Question 7

A correlation coefficient of $$r = -0.85$$ indicates:

Accepted Answer

A strong negative correlation between two variables.

Question 8

Which of the following is an example of a double-blind experiment?

Accepted Answer

Neither the participants nor the experimenters know who is receiving the treatment or placebo.

Question 9

Which brain structure acts as a relay station for sensory information (except smell) on its way to the cortex?

Accepted Answer

Thalamus

Question 10

Which of the following best illustrates the bystander effect?

Accepted Answer

A person is more likely to help someone in need when they are alone than when in a group.

Question 11

Which of the following is a function of the reticular formation?

Accepted Answer

Regulating sleep and arousal

Question 12

Which of the following best describes the 'all-or-none' principle of neuron firing?

Accepted Answer

A neuron fires only if the stimulus is above a certain threshold, and the action potential is always the same size.

Question 13

Which of the following is an example of operationalization in psychological research?

Accepted Answer

Defining 'anxiety' as a score above 40 on the State-Trait Anxiety Inventory.

Question 14

Which of the following best distinguishes between a psychologist and a psychiatrist?

Accepted Answer

A psychiatrist is a medical doctor who can prescribe medication, while a psychologist typically cannot.

Question 15

Which of the following is a key difference between structuralism and functionalism?

Accepted Answer

Functionalism focuses on the purpose of mental processes, while structuralism focuses on the structure of the mind.

Question 16

A patient is experiencing problems with hormone regulation and body temperature. Which brain structure is most likely involved?

Accepted Answer

Hypothalamus

Question 17

Which of the following best describes the placebo effect?

Accepted Answer

A participant's response to a treatment is due to their expectations rather than the treatment itself.

Question 18

Which of the following is a function of glial cells in the nervous system?

Accepted Answer

Providing support and nutrition to neurons.

Question 19

Which of the following best describes neuroplasticity?

Accepted Answer

The ability of the brain to change and adapt as a result of experience.

Question 20

A researcher wants to study the relationship between hours spent studying and exam scores. Which type of research design is most appropriate?

Accepted Answer

Correlational research

Foundations of Psychology: Key Concepts, Theories, and Biological Bases

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