Irrationality

irrationalirrationalismirrational thinkingirrationallyabandon reasonirrational claimsirrational delusionsirrationalistirrationalisticirrationalities
Irrationality is cognition, thinking, talking, or acting without inclusion of rationality.wikipedia
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Paranoia

paranoidparanoid ideationmonster
People with a mental illness like schizophrenia may exhibit irrational paranoia.
Paranoia is an instinct or thought process which is believed to be heavily influenced by anxiety or fear, often to the point of delusion and irrationality.

Dada

DadaismDadaistDadaists
Dada Surrealist art movements embraced irrationality as a means to "reject reason and logic".
Developed in reaction to World War I, the Dada movement consisted of artists who rejected the logic, reason, and aestheticism of modern capitalist society, instead expressing nonsense, irrationality, and anti-bourgeois protest in their works.

Rationality

rationalrational thoughtrational thinking
Irrationality is cognition, thinking, talking, or acting without inclusion of rationality.

Reason

reasoningratiocinationhuman reason
It is more specifically described as an action or opinion given through inadequate use of reason, or through emotional distress or cognitive deficiency.
Though the theologies and religions such as classical monotheism typically do not claim to be irrational, there is often a perceived conflict or tension between faith and tradition on the one hand, and reason on the other, as potentially competing sources of wisdom, law and truth.

Panic

desperationalarmintense levels
Humans are also vulnerable to panic and it is often considered infectious, in the sense one person's panic may easily spread to other people nearby and soon the entire group acts irrationally, but people also have the ability to prevent and/or control their own and others' panic by disciplined thinking or training (such as disaster drills).

Cognitive bias

cognitive biasesbiascognitive
Thus, cognitive biases may sometimes lead to perceptual distortion, inaccurate judgment, illogical interpretation, or what is broadly called irrationality.

Julius Bahnsen

BahnsenJulius Friedrich August BahnsenRealdialektik
The 19th-century German philosopher Julius Bahnsen asserted that all thought processes, desires and actions ultimately led to irresolvable contradictions which stem from the inherent irrationality of being.
In Bahnsen's view, there was a stark mismatch between the unconcealed irrationality of the world and the naive theories, rationalizations and explanations of various philosophers.

Rational irrationality

Rational irrationality (theory)
The concept known as rational irrationality was popularized by economist Bryan Caplan in 2001 to reconcile the widespread existence of irrational behavior (particularly in the realms of religion and politics) with the assumption of rationality made by mainstream economics and game theory.

Superstition

superstitioussuperstitionsbad luck
Superstition is any belief or practice that is considered irrational or supernatural: for example, if it arises from ignorance, a misunderstanding of science or causality, a positive belief in fate or magic, or fear of that which is unknown.

Cognition

cognitivecognitive functioncognitive process
Irrationality is cognition, thinking, talking, or acting without inclusion of rationality.

Confidence trick

con artistcon manscam
Irrational behaviors of individuals include taking offense or becoming angry about a situation that has not yet occurred, expressing emotions exaggeratedly (such as crying hysterically), maintaining unrealistic expectations, engaging in irresponsible conduct such as problem intoxication, disorganization, and falling victim to confidence tricks.

Mental disorder

mental illnessnervous breakdownmentally ill
People with a mental illness like schizophrenia may exhibit irrational paranoia.

Schizophrenia

schizophrenicschizophrenicspositive symptoms
People with a mental illness like schizophrenia may exhibit irrational paranoia.

Psychology

psychologicalpsychologistpsychologists
The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.

Cognitive science

cognitive scientistcognitive sciencescognitive
The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.

Economics

economiceconomisteconomic theory
The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.

Game theory

gamegame theoristgame theoretic
The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.

Evolutionary psychology

evolutionary psychologistevolutionary psychologistsevolutionary
The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.

Advertising

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The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.

Propaganda

propagandistpropagandisticpropagandists
The study of irrational behavior is of interest in fields such as psychology, cognitive science, economics, game theory, and evolutionary psychology, as well as of practical interest to the practitioners of advertising and propaganda.