stimulus-sampling

Stimulus-sampling theory is a psychological model that explains learning mathematically. It proposes that a stimulus is not a single quality but a collection of properties. At each learning trial, a subject randomly samples from these properties, leading to variations in responses over time. This theory, pioneered by William K. Estes, suggests that learning appears gradual because the environment is complex and constantly changing. Therefore, it takes multiple trials for a response to be associated with a comprehensive set of potential stimuli. This approach helps account for inconsistencies in human and animal learning by acknowledging that individuals respond differently to the same stimulus due to sampling different properties at different times.123