ABSTRACT
The premise of this chapter is that affect is a basis for rationality and that affective processing is a constituent component of design thinking. The chapter focuses on the influence of the valence of affective judgments on design thinking. The transcripts of design meetings are coded according to a formal, linguistic analysis of the semantic resources for appraisals, the display of sentiment and subjectivity in language. The research indicates that the appetitive or aversive orientation of appraisals have design thinking consequences on knowledge integration and generation. During knowledge integration, negative appraisals accompany periods of technical analysis and engineering new design solutions; conversely, positive appraisals accompany a reliance on general knowledge and background experience. During knowledge generation, positive appraisals are associated with the creation of knowledge while negative appraisals are associated with ‘being stuck’.
