The Affect infusion model (AIM) is a theoretical model in the field of human psychology. Developed by social psychologist Joseph Paul Forgas in the early 1990s, it attempts to explain how affect impacts one's ability to process information. A key assertion of the AIM is that the effects of affect tend to be exacerbated in complex situations that demand substantial cognitive processing. In simpler words, as situations become more complicated and unanticipated, mood becomes more influential in driving evaluations and responses.