A Researcher Notices That the Participants Assigned to the Experimental

question 11

Multiple Choice

A researcher notices that the participants assigned to the experimental group were less likely to attend the second session in his experiment than those in the control group. The researcher is concerned that __________ might represent a potential threat to the internal validity of her study.

• A) history
• B) attrition
• C) instrumentation
• D) maturation

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Definitions:

Partial Reinforcement

A conditioning process in which a reward is not administered every time the desired action is performed, leading to more resistant behavior to extinction.

Classroom Answers

Refers to responses given by students or participants in an educational setting, usually in response to questions posed by teachers or instructors.

Negative Reinforcer

A stimulus whose removal or avoidance after a behavior increases the likelihood of that behavior occurring again in the future.

Migraine Headache

A type of headache characterized by intense, throbbing pain, often accompanied by nausea, vomiting, and sensitivity to light or sound.