Interaction

Interaction is action that occurs between two or more entities, generally used in philosophy and the sciences. It may refer to:

Science

 * Interaction hypothesis, a theory of second language acquisition
 * Interaction (statistics), when three or more variables influence each other
 * Interactions of actors theory, created by cybernetician Gordon Pask
 * Fundamental interaction or fundamental force, the core interactions in physics
 * Human–computer interaction, interfaces for people using computers
 * Social interaction between people

Biology

 * Biological interaction
 * Cell–cell interaction
 * Drug interaction
 * Gene–environment interaction
 * Protein–protein interaction

Chemistry

 * Aromatic interaction
 * Cation-pi interaction
 * Metallophilic interaction

Arts and media

 * Interaction (album), 1963, by Art Farmer's Quartet
 * ACM Interactions, a magazine published by the Association for Computing Machinery
 * "Interactions" (The Spectacular Spider-Man), an episode of the animated television series
 * 63rd World Science Fiction Convention, titled Interaction