How Many Participants Would Be Needed for a Within-Subjects Experiment

question 21

Multiple Choice

How many participants would be needed for a within-subjects experiment comparing four different treatment conditions with a total of 20 scores in each treatment?

• A)​20
• B)​40
• C)80
• D)​anywhere from 20 to 80

Understand the ethical considerations in research, especially regarding participant consent and researcher-participant relationships.

Comprehend the influence of researcher perspective on the choice of research topic, method, and interpretation of data.

Appreciate the necessity of reliability and validity in measurement tools used in research.

Understand the legal obligations and duties involved in the employer-employee relationship, specifically relating to safe working conditions.

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Definitions:

Five-Figure Accuracy

The precision of a numerical value up to five significant digits.

Calculate

To work out the numerical value of something through a systematic series of steps.

Graph

A visual representation of data, functions, or equations on a coordinate plane.

Equation

A mathematical statement that asserts the equality of two expressions, typically including variables and constants.