Abstract：Investigating user continuance intention toward library self-service technologyThe case of self-issue and return systems in the public context Purpose The purpose of this paper is to apply expectation-confirmation theoryECTand the unified theory of acceptance and use of technologyUTAUTto identify potential determinants of library patronsintention to continue usingcontinuanceself-issue and return systems for borrowing and returning booksThe role of continuance is specifically interesting and is well-established in the literature of information systemsISsand marketing because continuance is considered to be the central element for the survival of ISs and of self-service technologySSTHoweverthe role of continuance has been neglected by researchers studying library SST adoptionDesignmethodologyapproach A research model integrating the expectation-confirmation model of IS continuance with UTAUT was developed and empirically validated using data obtained from a field survey involving 128 active users of a self-issue and return system at a public library in TaiwanFindings Library patronscontinuance intention was affected by their post-adoption expectation of perceived performanceeffort performance and facilitating conditions as well as their satisfaction when using self-issue and return systemsMoreovera patron satisfaction level was influenced by performance expectancy and confirmation of initial expectationswhereas confirmation had a positive effect on all post-adoption expectationsOriginalityvalue This study broadens perspectives on SST adoption behavior in the library context by identifying some factors that influence library patronscontinuance decisionsFurthermorethe authors verified the applicability and predictability of the theoretical integration of ECT with UTAUT in a diverse setting because the authors sought survey participants outside of the college populationLibrary AutomationIntelligent LibraryThe focus is that the application expectation theoryECTand the unified theory of technical acceptance and use to determine the potential decisive factor of library readers to continue using self-service borrowing and returning systems