$$ \text{Mean} = \frac{\sum_{i=1}^{n} x_i}{n} $$

$$ \text{Mode} = \text{value that occurs most frequently in the data set} $$

Question 1

Which of the following best describes the main focus of biopsychology?

Accepted Answer

Explaining behavior as a product of biological, psychological, and sociocultural factors.

Question 2

A researcher wants to study the effect of sleep deprivation on memory recall. To minimize bias, which of the following should they prioritize?

Accepted Answer

Randomly assigning participants to sleep and no-sleep groups.

Question 3

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

Accepted Answer

Norepinephrine

Question 4

According to the principles of scientific methodology, which skill involves making predictions based on collected knowledge?

Accepted Answer

Apply knowledge

Question 5

A psychologist is conducting a double-blind study. What does this mean?

Accepted Answer

Neither the participant nor the researcher knows who receives the treatment.

Question 6

Which equation correctly represents the calculation of the mean for a set of scores $$x_1$$, $$x_2$$, ..., x_n$$?

Accepted Answer

$$ 	ext{Mean} = \frac{\sum_{i=1}^{n} x_i}{n} $$

Question 7

Which of the following is an example of epigenetics?

Accepted Answer

Environmental factors causing changes in gene expression without altering DNA sequence.

Question 8

A patient suffers damage to their hippocampus. Which function is most likely to be impaired?

Accepted Answer

Forming new memories

Question 9

Which of the following best illustrates the concept of reliability in psychological research?

Accepted Answer

A test consistently produces similar results under the same conditions.

Question 10

Which neurotransmitter is most directly involved in learning and memory?

Accepted Answer

Acetylcholine

Question 11

A researcher finds that as stress increases, sleep decreases. This is an example of which type of correlation?

Accepted Answer

Negative correlation

Question 12

Which of the following is NOT a characteristic of quality scientific research?

Accepted Answer

Subjectivity

Question 13

Which brain structure is primarily responsible for relaying sensory information to the cortex?

Accepted Answer

Thalamus

Question 14

A person is able to recognize their favorite song even when played on a different instrument. Which perceptual principle does this illustrate?

Accepted Answer

Perceptual constancy

Question 15

Which of the following best describes the function of the autonomic nervous system?

Accepted Answer

Regulates involuntary bodily functions such as heart rate and digestion.

Question 16

Which equation represents the calculation of the mode in a data set?

Accepted Answer

$$ 	ext{Mode} = 	ext{value that occurs most frequently in the data set} $$

Question 17

Which of the following is a function of the spinal cord?

Accepted Answer

Controls simple reflexes and communicates with the nervous system.

Question 18

A psychologist is interested in how genes and environment interact to influence mental health. Which field of psychology does this best represent?

Accepted Answer

Behavioral genomics

Question 19

Which of the following best describes the process of transduction in sensation?

Accepted Answer

Conversion of physical energy into neural signals.

Question 20

A researcher wants to generalize their findings to a larger population. Which characteristic of scientific research does this illustrate?

Accepted Answer

Generalizability

Introduction to Psychology: Key Concepts, Methods, and Biological Foundations

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