Question 1

Which of the following best describes the scientific method as used in psychology?

Accepted Answer

A systematic way of learning about the world through collecting observations, developing theories, and using them to make predictions.

Question 2

Which brain structure is primarily responsible for forming new memories and is often affected in cases of depression and stress?

Accepted Answer

Hippocampus

Question 3

A researcher wants to study the effect of sleep deprivation on memory recall. She randomly assigns participants to either a sleep-deprived group or a well-rested group and measures their recall performance. In this experiment, what is the independent variable?

Accepted Answer

Amount of sleep (sleep-deprived vs. well-rested)

Question 4

Which neurotransmitter is most closely associated with movement and reward processing, and is implicated in Parkinson's disease?

Accepted Answer

Dopamine

Question 5

Which of the following best illustrates the concept of localization of function in the brain?

Accepted Answer

Certain parts of the brain control specific things and personality traits.

Question 6

A psychologist is conducting a case study on a patient with extraordinary memory. What type of research is this?

Accepted Answer

Descriptive research

Question 7

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

Accepted Answer

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

Question 8

Which research method is best suited for determining cause-and-effect relationships?

Accepted Answer

Experimental research

Question 9

Which of the following statements about neurotransmitters is TRUE?

Accepted Answer

Neurotransmitters are chemical messengers that transmit signals across synapses between neurons.

Question 10

Which of the following best describes the function of the corpus callosum?

Accepted Answer

It connects the two cerebral hemispheres and allows communication between them.

Question 11

A psychologist finds a positive correlation ($$r = 0.85) $$between hours spent studying and exam scores. What does this mean?

Accepted Answer

There is a strong relationship between hours spent studying and exam scores, but causation cannot be inferred.

Question 12

Which imaging technique is most useful for detecting changes in brain activity over time by measuring electrical signals?

Accepted Answer

EEG (Electroencephalogram)

Question 13

Which of the following is a key feature of the humanistic perspective in psychology?

Accepted Answer

Emphasis on free will, rational thoughts, and the uniqueness of individuals.

Question 14

Which of the following best describes the function of the frontal lobe?

Accepted Answer

Controlling decision-making, planning, and voluntary movement.

Question 15

Which of the following is an example of a dependent variable in an experiment studying the effects of caffeine on reaction time?

Accepted Answer

Reaction time measured after caffeine consumption

Question 16

Which of the following best describes the concept of natural selection as it relates to psychology?

Accepted Answer

Favorable traits become more common in a population over generations.

Question 17

Which formula correctly calculates the range of a data set with maximum value $$x_{max}$$ and minimum value $$x_{min}$$?

Accepted Answer

$$x_{max} - x_{min}$$

Question 18

Which of the following statements about experimental control groups is correct?

Accepted Answer

Control groups are used as a baseline for comparison and do not receive the independent variable.

Question 19

A researcher is interested in whether stress levels are related to hours of sleep among college students. She collects data and finds $$r = -0.70. $$What does this correlation coefficient indicate?

Accepted Answer

There is a strong negative relationship: as hours of sleep increase, stress levels decrease.

Foundations of Psychology: Research Methods, Brain Structure, and Key Theories

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