Question 1

Which of the following best describes the main difference between an independent variable (IV) and a dependent variable (DV) in psychological research?

Accepted Answer

The IV is manipulated to observe its effect on the DV, which is the outcome measured.

Question 2

A researcher wants to test whether sleep deprivation affects memory recall. They randomly assign participants to either a sleep deprivation group or a control group. What is the primary purpose of random assignment in this experiment?

Accepted Answer

To control for confounding variables by evenly distributing participant characteristics across groups.

Question 3

Which psychological perspective focuses on how genetic, neural, and hormonal processes influence behavior and mental processes?

Accepted Answer

Biological Perspective

Question 4

A study finds a positive correlation between hours spent studying and academic performance. Which of the following statements is TRUE regarding this finding?

Accepted Answer

There is a statistical relationship, but causation cannot be inferred.

Question 5

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

Accepted Answer

Participants' natural energy levels prior to the test.

Question 6

In a double-blind study, who is unaware of the group assignments?

Accepted Answer

Both the participants and the researchers.

Question 7

Which concept refers to the tendency to believe, after an event has occurred, that one would have predicted or expected the outcome?

Accepted Answer

Hindsight bias

Question 8

A psychologist is interested in how children learn language by observing their interactions in a classroom without interfering. Which research method is being used?

Accepted Answer

Naturalistic observation

Question 9

Which of the following best illustrates the placebo effect?

Accepted Answer

A participant receives a sugar pill and reports reduced pain, believing it to be a real medication.

Question 10

A researcher combines the results of several studies on cognitive-behavioral therapy (CBT) for anxiety to draw a more reliable conclusion. What is this research method called?

Accepted Answer

Meta-analysis

Question 11

Which of the following is a key feature of a representative sample?

Accepted Answer

It accurately reflects the characteristics of the population from which it is drawn.

Question 12

Which psychological perspective emphasizes the influence of unconscious motives and childhood experiences on behavior?

Accepted Answer

Psychoanalytic Perspective

Question 13

A researcher wants to measure the effect of a new teaching method on high school students' test scores. Which of the following is the dependent variable?

Accepted Answer

The test scores of the students

Question 14

Which of the following best describes operational definitions in psychological research?

Accepted Answer

They specify how variables are measured or manipulated, ensuring clarity and consistency.

Question 15

A business owner is overly confident in their ability to predict market trends without adequate research, leading to poor decisions. Which cognitive bias does this scenario illustrate?

Accepted Answer

Overconfidence bias

Question 16

Which of the following formulas correctly represents the calculation of a correlation coefficient $$r$$ between two variables $$X$$ and $$Y$$?

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 17

A psychologist uses a survey to collect numerical data on stress levels from 100 participants and analyzes the results statistically. What type of measure is being used?

Accepted Answer

Quantitative measure

Question 18

Which of the following best describes the concept of generalizability in psychological research?

Accepted Answer

The ability to apply findings from a study to a broader population beyond the sample.

Question 19

A researcher is interested in the effect of exercise on mood. They assign participants to either an exercise group or a control group and measure mood before and after the intervention. Which type of experimental design is this?

Accepted Answer

Between-subjects design

Question 20

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

Accepted Answer

Prioritization of individual potential, self-actualization, and personal growth.

Foundations of Psychological Research: Key Concepts and Methods

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