You Are a Beautician About to Apply a Reducing Agent

question 28

Multiple Choice

You are a beautician about to apply a reducing agent to a customer with fine hair who wants to have his hair curly. Should the reducing agent be regular strength, concentrated, or diluted?

• A)regular strength
• B)concentrated, because in thin hair each strand is made of fewer cysteine amino acids
• C)dilute, so as not to cause the hair to fall apart completely
• D)concentrated, in order to add more disulfide cross-linking

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Definitions:

Classical Conditioning

An educational method where associations are made between a naturally occurring stimulus and an environmental one, resulting in a conditioned reaction.

Operant Conditioning

An educational method where the intensity of an action is altered through rewards or penalties.

Spontaneous Recovery

The reappearance of a previously extinguished response after a period without exposure to the conditioned stimulus.

Extinction

In psychology, the process by which a previously reinforced response diminishes and eventually disappears when reinforcement is no longer provided.