RelevancetheoryisthewesternlinguistsSperberandWilsonGricecorrelationrulebasedontheproposedMaxim)andgeneratingleads(thecognitivepragmaticstheory.Relevancetheoryofdiscourseunderstandingfurtherpointedoutthatnotonlyisareasoningprocess,butaexpressreasoningprocess.Thecoreofrelevancetheoryistoseekoptimalrelevanceprinciplethathumancommunicationwillproduceanoptimalrelevanceofexpectation,therecipientshoulddeterminethecommunicatorcommunicativeintention,andtheymustonthecognitiveenvironmenttwocommunicatingpartiesfoundinconvoysofotherwordsandcontext,theoptimalrelevancebetweenbyreasoningdeducetheimpliedmeaningcontext,thusobtainingcontextualeffect,achievetheaimofcommunication.
Relevancetheorythatpeoplealwaysexpectinunderstandingspeechbyunderstandingspeechandforwhathehaddonehypothesisinteractions.Thisinteractioncauseacontextualeffect.Ifcertaininformationinacontextcanproducecontextualeffect,thenheisassociated.Andincommunicationprocess,thetwocommunicativesidesneednotconsidercooperationproblem,peoplehaveassociatedintuition.Communicationistheassociationfororientation.Communicationisfirm,thecorrelationofcontextisvariable,peopleuseassociationchoosethebestcontextandprocessinformationreachoptimalrelevance,inourlivesmanycommunicativebehaviorandthephenomenonbyrelevancetheorycanbeanalyzedandexplained.