This study presents state affect as a necessary theoretical and empirical component of information systems (IS) research models addressing the cognitions regarding, and usage of, information technology (IT). We position state affect as a powerful predictor of trusting cognitions and explain how state affect may also directly impact IT use. We tested our research model using data from 376 users of Microsoft Excel. Results indicate that positive and negative affect influence various trusting cognitions as well as directly impact post-adoptive use intentions. Our findings offer particular implications IS research models intending to comprehensively model cognitions and attitudes regarding IT and IT usage
