Explain Why a Reversal Design (E

question 21

Essay

Explain why a reversal design (e.g., an ABA design) has greater internal validity than a simple AB design.

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Definitions:

Flexor Carpi Radialis

A muscle in the forearm that flexes and abducts the hand at the wrist.

Brachialis

A muscle in the upper arm that flexes the elbow, located underneath the biceps muscle.

Triceps Brachii

A major muscle of the upper arm that extends the forearm and is comprised of three heads: long, medial, and lateral.

Hamstring Group

A group of three muscles at the back of the thigh that are involved in bending the knee.