Darrin Is a Good Piano Player

question 13

Multiple Choice

Darrin is a good piano player. If he is alone, he gets distracted and makes mistakes. At a recital with strangers, he also makes mistakes. His best performance is typically when family and friends are nearby. This is an example of the

• A) Yerkes-Dodson law.
• B) set-point theory.
• C) James-Lange theory.
• D) Cannon-Bard theory.

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Definitions:

Element

A substance that cannot be broken down into simpler substances by chemical means, consisting of atoms with the same number of protons.

Chemically Bonded

The state of being joined or connected through chemical bonds, which involve the sharing or exchange of electrons between atoms.

Homogeneous

A descriptor for a mixture or substance that has the same uniform appearance and composition throughout.

Mixture

A physical combination of two or more substances in which each substance retains its own chemical identity and properties.