BAPSY FREE BAPSY Bachelor of Arts in Psychology Psychological Research Methods Questions and Answers 2

Question 1

A researcher wants to determine whether sleep deprivation causes decreased reaction time. Which research design is most appropriate?

Accepted Answer

True experimental design

Answer

A true experimental design with random assignment and manipulation of the independent variable is needed to establish causation.

Question 2

What is the primary purpose of a double-blind procedure in psychological research?

Accepted Answer

To reduce both participant and researcher bias

Answer

Double-blind procedures prevent both participants and researchers from knowing group assignments, minimizing expectation-related biases.

Question 3

Which measure of central tendency is most affected by extreme outliers in a data set?

Accepted Answer

Mean

Answer

The mean incorporates every value in the calculation, making it highly sensitive to extreme scores that pull it toward the outlier.

Question 4

A psychologist notices that students who exercise more frequently also report lower stress levels. What conclusion can be drawn?

Accepted Answer

Exercise and stress are negatively correlated

Answer

Correlational data can only establish that a relationship exists and its direction, not that one variable causes changes in another.

Question 5

In a study with 200 participants, what does a p-value of 0.03 indicate?

Accepted Answer

There is a 3% probability the results occurred by chance alone assuming the null hypothesis is true

Answer

A p-value of 0.03 means there is a 3% probability of obtaining results at least this extreme if the null hypothesis were true.

BAPSY - Bachelor of Arts in Psychology Practice Test