In an effort to prevent participants in an experiment from trying to confirm the researchers' predictions,psychologists sometimes

A) obtain written promises from participants to respond honestly.
B) treat information about individual participants confidentially.
C) deceive participants about the true purpose of an experiment.
D) allow people to decide for themselves whether they want to participate in an experiment.

Experimental Variables

Components in research that can be manipulated or measured to assess their effect on an outcome of interest; include independent, dependent, and controlled variables.

Confidentiality

The ethical principle that mandates the protection of personal information shared in a professional context, ensuring it is not disclosed without consent.

Written Promises

Documents or agreements in which one party commits to perform a specified action for another party.