Psychology Degree FREE Psychology Degree 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 experiment with random assignment

Answer

Naturalistic observation

Answer

Case study

Answer

Correlational study

Question 2

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

Accepted Answer

To reduce demand characteristics and experimenter bias

Answer

To increase the sample size

Answer

To ensure informed consent is obtained

Answer

To replicate previous findings

Question 3

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

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Standard deviation

Question 4

In a study examining the relationship between anxiety and test performance, anxiety level is the independent variable and test score is the dependent variable. What type of validity is threatened if the anxiety manipulation also unintentionally changes participants' motivation?

Accepted Answer

Internal validity

Answer

External validity

Answer

Face validity

Answer

Content validity

Question 5

A psychologist surveys 500 college students about their study habits and GPA. Which correlation coefficient indicates the strongest relationship?

Accepted Answer

r = -0.87

Answer

r = 0.65

Answer

r = -0.42

Answer

r = 0.15

Question 6

Which sampling method gives every member of the population an equal chance of being selected?

Accepted Answer

Simple random sampling

Answer

Convenience sampling

Answer

Snowball sampling

Answer

Purposive sampling

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

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