ABSTRACT
This chapter aims to define four related concepts: inference making, reasoning, logic, and causality. Illogicality may be the result of faulty inference making, impaired reasoning, fallacious logic, or mistaken beliefs about causation. Aristotelian logic is a deductive method of formal logic, best represented by syllogistic reasoning. The study of illogicality has extended into the fields of social anthropology and developmental psychology. Illogicality has traditionally been understood as a manifestation of primary process thinking mediated by the mechanisms of condensation and symbolization. Weiner believed that fabulization, confabulation, and absurd Dds were Rorschach representations of overgeneralized thinking. Leichtman proposed a developmental theory to explain Rorschach thought disorder scores. Arnow and Cooper conceptualized some of the Rorschach features associated with the self-pathological syndromes described by Kohut and Wolf. Several writers have moved from their patients' illogical Rorschach responses to the therapeutic implications of such responses.
