In psychology, constructivism concerns the world of constructivist psychologies. Many schools of psychotherapy self-define themselves as “constructivist”. Although extraordinarily different in their therapeutic techniques, they are all connected by a common critique to previous standard approaches and by shared assumptions about the constructive nature of knowledge. In particular, the critique is aimed at the “associationist” postulate of empiricism, “by which the mind is conceived as a passive system that gathers its contents from its environment and, through the act of knowing, produces a copy of the order of reality. In contrast, constructivism is an epistemological premise grounded on the assertion that, in the act of knowing, it is the human mind that actively gives meaning and order to that reality to which it is responding”. The constructivist psychologies theorize about and investigate how human beings create systems for meaningfully understanding their worlds and experiences. In psychotherapy, for example, this frame could translate into a therapist asking questions that confront a client's world-view in an effort to expand his or her meaning making habits. The assumption here is that clients encounter problems not because life is inherently problematic or because they have a mental disease but because of the way they frame their problems, or the way people make sense of events that occur in their life.