Duality models in social psychology: From dual processes to interacting systems

Dual-system models explain social cognition and behavior as a joint function of 2 interconnected mental faculties, each operating according to different principles. In this article, we use the Reflective-Impulsive Model as an example and first describe 3 major advantages of dual-system models, i.e., their integrative power, their foundation in well-established constructs of cognition and neuroscience; and the ease with which they can explain the interplay of judgments and nonjudgmental processes. We then turn to current debates on the adequate number of systems, as well as on the role of freedom and consciousness. We conclude by stating that dual-system models are versatile tools to integrate existing findings and to stimulate new research in social cognition and beyond.