BAPSY Psychological Research and Statistics 3

Question 1

In which research design does the researcher manipulate one variable while holding all others constant to establish causation?

Accepted Answer

True experiment

Answer

True experiments with random assignment and manipulation of the independent variable are the gold standard for establishing causal relationships.

Question 2

The mode is the preferred measure of central tendency when data are:

Accepted Answer

Nominal (categorical)

Answer

The mode is the only measure of central tendency applicable to nominal data because mean and median require at least ordinal measurement.

Question 3

A researcher uses debriefing after a deception study. What is the PRIMARY ethical purpose?

Accepted Answer

To restore participant understanding and well-being after deception

Answer

Debriefing serves to inform participants of the true purpose, remove any false impressions, and address any distress caused by deception.

Question 4

Which nonparametric test is the appropriate alternative to a one-sample t-test when normality cannot be assumed?

Accepted Answer

Wilcoxon signed-rank test

Answer

The Wilcoxon signed-rank test compares a single sample's median to a hypothesized value without assuming normality.

Question 5

Demand characteristics in an experiment refer to cues that:

Accepted Answer

Lead participants to guess the study's purpose and alter their behavior accordingly

Answer

Demand characteristics are cues in the experimental setting that suggest the expected behavior, potentially inflating or distorting results.

BAPSY - Bachelor of Arts in Psychology Practice Test