Random Assignment to Conditions Works to Balance Participants' Individual Differences

question 8

Multiple Choice

Random assignment to conditions works to balance participants' individual differences across conditions of the experiment by

• A) matching individuals on key variables.
• B) asking individuals to participate in each condition of the experiment.
• C) forming groups based on an individual differences variable the researcher selects.
• D) generating groups of participants that are equivalent, on average.

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Definitions:

Infraspinatus

A thick triangular muscle located on the back of the shoulder which helps in the rotation and stabilization of the shoulder joint.

Coracobrachialis

A muscle in the shoulder that assists with flexion and adduction of the arm at the shoulder joint.

Teres Major

A muscle of the upper limb that assists in rotating the arm and bringing it towards the body.

Deltoid

A large triangular muscle covering the shoulder joint, responsible for lifting the arm and giving the shoulder its range of motion.