Fixed action pattern

Definition

Fixed action patterns (FAPs) are innate, pre-programmed behaviors triggered by specific stimuli. Once initiated, these behaviors run to completion without further environmental influence.

5 Must Know Facts For Your Next Test

1. Fixed action patterns are consistent and predictable, occurring in the same way every time for a given species.
2. These behaviors are typically triggered by a specific external stimulus known as a sign stimulus or releaser.
3. FAPs are considered to be hardwired into an organism's nervous system, requiring no learning or experience to execute.
4. Examples of FAPs include the egg-rolling behavior in geese and the mating dance of certain bird species.
5. Fixed action patterns can provide insight into the evolutionary adaptations that enhance survival and reproductive success in animals.

Related terms

Innate Behavior: A behavior that is developmentally fixed and under strong genetic control, exhibited similarly across all members of a species regardless of environment or experience.

Sign Stimulus: A specific external cue that triggers a fixed action pattern or other innate behaviors.

Proximate Cause: The immediate genetic, neurological, hormonal, and skeletal-muscular mechanisms responsible for a behavior.