IQ Glossary

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Behavior Modification
Applying a behavioral theory in hopes of changing specific behavior(s).

Behaviorism
Behaviorism (or behaviourism) is an approach to psychology based on the proposition that behavior is interesting and worthy of scientific research. It is a form of materialism, denying any independent significance for mind. Its significance for psychological treatment has been profound, being one of the pillars of pharmacological therapy.

Bell-Shaped Curve
The graph of the probability density function of the normal distribution is sometimes called the bell curve or the bell-shaped curve; see normal distribution.

Biochemistry
Biochemistry is the chemistry of life. Biochemists study the molecules and chemical reactions catalyzed by enzymes that take place in all living organisms. See the article on molecular biology for a diagram and description of the interrelationship between biochemistry, molecular biology, and genetics.