Unconscious thought theory (UTT) posits that the unconscious mind is capable of performing tasks outside of one's awareness, and that unconscious thought (UT) is better at solving complex tasks, where many variables are considered, than conscious thought (CT), but is outperformed by conscious thought in tasks with fewer variables. It was proposed by Ap Dijksterhuis and Loran Nordgren in 2006. The theory is based primarily on findings from comparing subjects presented with a complex decision (for instance which of several apartments is the best?), and allowed either (1). very little time, (2). ample time, or (3), ample time but are distracted and thereby prevented from devoting conscious attentional resources to it. It is claimed that subjects unable to devote conscious processing to the task outperform both those who can spend time deliberating and those who must respond immediately. Dijksterhuis and Nordgren interpreted these findings as strong support for the idea of UT being superior to CT, and used them in part to justify six principles distinguishing UT from CT. This position runs counter to most research on unconscious processing conducted over the last 40 years, which has found unconscious processes to be characterized by simple responses, and to be incapable of complex operations. Unconscious Thought Theory has come under stiff criticism from researchers unable to replicate the original effects. Unconscious thought theory runs counter to decades of mainstream research on unconscious cognition (see Greenwald 1992 for a review). Many of the attributes of unconscious thought according to UTT are drawn from research by George Miller and Guy Claxton on cognitive and social psychology, as well as from folk psychology; together these portray a formidable unconscious, possessing some abilities far beyond those of conscious thought. UTT is in this respect reminiscent of some classical views of the unconscious that emerged as far back as the early twentieth century.