Cognitive complexity is an aspect of personal construct psychology introduced in 1955 by James Bieri. First applied to mental health and psychology patients, the concept was later expanded to cover human-computer interaction and organizational theory. In short, it refers to the ability of a person to perceive and respond to variables based on prior experience and prior developed personal constructs. With regard to human-computer interaction, it refers to the differences between how a human determines relevance and calculates probability versus how computers or artificial intelligence determine similar concepts. Also referred to as the language of thought, the study of such cognition abilities and systems continue today.
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