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Stimulus–Response Compatibility

When a stimulus automatically activates a response code, performance improves if that code agrees with the task-mandated response and degrades if the codes conflict, even when the triggering feature is irrelevant.

Version
v5 · 2026-09-19 · History
Domain-specific #
1060
Domain group
Social Sciences
Origin domain
Psychology & Behavioral Sciences
Subdomain
Attention and Response Selection → Psychology & Behavioral Sciences
Aliases
Stimulus Response Compatibility Effect, S R Compatibility, Response Code Compatibility

Core Idea

Stimulus–response compatibility is the family of cognitive effects in which a stimulus feature automatically activates a response code and performance depends on whether that code agrees with the response demanded by the task. Agreement facilitates speed and accuracy; conflict produces latency and errors even when the activating feature is explicitly irrelevant.

Scope of Application

The family includes spatial correspondence effects such as the Simon effect, semantic competition such as the Stroop effect, flanker paradigms, and control-display mappings in ergonomics. It remains domain-specific because its identity requires a cognitive task, a response set, and measured response selection.

Clarity

It explains why “irrelevant” in the task instructions does not mean unprocessed. A feature can be irrelevant to the correct answer while still activating a competing response.

Manages Complexity

Many named interference paradigms reduce to one shared architecture: automatic code activation, task code activation, agreement or conflict at selection, and a congruency cost.

Abstract Reasoning

Vary code correspondence while holding stimulus and motor demands as constant as possible; the difference localizes cost to response selection rather than perception or execution.

Knowledge Transfer

Laboratory congruency effects transfer to human-factors design by aligning displays, controls, and response directions with the codes users automatically generate.

Examples

The Stroop effect, Simon effect, flanker effect, and spatially congruent control layouts are members or applications of the family.

Relationships to Other Abstractions

Local relationship map for Stimulus–Response CompatibilityParents appear above the current abstraction, mutual partners to the right, and children below. Node labels state whether each abstraction is prime or domain-specific; colors identify relation types.Stimulus–ResponseCompatibilityDOMAINPrime abstraction: Automaticity — includesAutomaticityPRIMEPrime abstraction: Interference and Contention — includesInterferenceand ContentionPRIMEPrime abstraction: Compatibility — is a kind ofCompatibilityPRIMEDomain-specific abstraction: Simon Effect — is a kind ofSimon EffectDOMAINDomain-specific abstraction: Stroop Effect — is a kind ofStroop EffectDOMAIN

Current abstraction Stimulus–Response Compatibility Domain-specific

Parents (3) — outgoing typed relations

  • Stimulus–Response Compatibility is a kind of Compatibility Prime

    Stimulus–response compatibility is the cognitive response-selection specialization of generic compatibility between interacting codes or mappings.

  • Stimulus–Response Compatibility includes Automaticity Prime

    An irrelevant stimulus dimension must automatically activate a response code for compatibility to affect performance despite instructions to ignore it.

  • Stimulus–Response Compatibility includes Interference and Contention Prime

    Incompatible trials contain contention between the automatically activated response code and the task-mandated code.

Children (2) — abstractions linked here by typed relations

  • Simon Effect Domain-specific is a kind of Stimulus–Response Compatibility

    The Simon effect is the spatial-code member of the stimulus-response compatibility family, with irrelevant stimulus location automatically activating a response side.

  • Stroop Effect Domain-specific is a kind of Stimulus–Response Compatibility

    The Stroop effect is the semantic-pathway member of the stimulus-response compatibility family, with word meaning automatically activating a response code that can agree or conflict with the required ink-color response.

Hierarchy paths (5) — routes to 4 parentless roots

Neighborhood in Abstraction Space

Stimulus–Response Compatibility sits in a moderately populated region (54th percentile for distinctiveness): it has near-neighbors but no dense thicket of look-alikes.

Family — Named Cognitive & Behavioral Effects (32 abstractions)

Nearest neighbors

Computed from structural-signature embeddings · 2026-10-25

Notes

Claude should re-author for house style and verify sources, retaining the domain boundary and the distinction between the shared family and its named paradigms.