$$\text{Mean} = \frac{\sum x_i}{n}$$

Question 1

Which of the following best describes the function of the thalamus in the brain?

Accepted Answer

It relays sensory information to the correct parts of the cortex.

Question 2

A psychologist is conducting an experiment to test the effect of sleep deprivation on memory recall. What is the independent variable in this study?

Accepted Answer

The amount of sleep participants receive.

Question 3

Which of the following is a characteristic of a double-blind study?

Accepted Answer

Both the participants and the researchers do not know which treatment is being administered.

Question 4

Which equation correctly represents the calculation of the mean in a data set?

Accepted Answer

$$	ext{Mean} = \frac{\sum x_i}{n}$$

Question 5

Which neurotransmitter is primarily associated with the regulation of mood, sleep, and appetite?

Accepted Answer

Serotonin

Question 6

A researcher finds a correlation coefficient of $$r = +0.95$$ between hours studied and exam scores. What does this indicate?

Accepted Answer

There is a very strong positive relationship between hours studied and exam scores.

Question 7

Which of the following best illustrates the concept of random assignment in experimental research?

Accepted Answer

Dividing participants into groups by flipping a coin.

Question 8

Which school of psychology focused on breaking down mental processes into their most basic components?

Accepted Answer

Structuralism

Question 9

In classical conditioning, what is the term for a stimulus that naturally and automatically triggers a response?

Accepted Answer

Unconditioned stimulus

Question 10

Which of the following is an example of a confounding variable in a study examining the effect of caffeine on memory?

Accepted Answer

Participants' prior sleep quality.

Question 11

Which brain structure is most directly involved in forming new memories?

Accepted Answer

Hippocampus

Question 12

Which of the following best describes the process of operationalization in psychological research?

Accepted Answer

Defining variables in terms of how they will be measured or manipulated.

Question 13

Which of the following is a limitation of case study research?

Accepted Answer

It may not generalize well to the broader population.

Question 14

Which equation represents the calculation of a correlation coefficient?

Accepted Answer

$$r = \frac{\sum (x_i - \bar{x})(y_i - \bar{y})}{\sqrt{\sum (x_i - \bar{x})^2$ \sum (y_i - \bar{y})^2$}}$$

Question 15

Which of the following is NOT a characteristic of a good scientific hypothesis?

Accepted Answer

It is based on authority rather than facts.

Question 16

Which neurotransmitter is most associated with the 'fight or flight' response?

Accepted Answer

Norepinephrine

Question 17

Which of the following best describes the concept of 'participant bias'?

Accepted Answer

Participants change their behavior because they know they are being observed.

Question 18

Which of the following is an example of a physiological measure in psychological research?

Accepted Answer

Heart rate recorded during a stress task.

Question 19

Which approach in psychology is most likely to investigate how genes and environment interact to influence behavior?

Accepted Answer

Biopsychosocial approach

Question 20

Which of the following best describes the function of the myelin sheath?

Accepted Answer

It insulates axons and speeds up neural transmission.

Psychology I – Complete Master Review (All Content)

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