A–Z Clinical Reference

Thought Disorder Dictionary

Standardized terminology, speech examples, and diagnostic criteria across Thought Process, Thought Content, and Thought Stream domains.

Showing 21 of 21 terms

Circumstantiality

Thought Process

Speech marked by excessive, irrelevant detail and circuitous detours, though the speaker ultimately returns to answer the original question.

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Clang Associations

Thought Process

A pattern of speech where word choice is governed by phonetic similarity (rhyming, alliteration, or assonance) rather than logical or semantic meaning.

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Echolalia

Thought Process

The involuntary, parrot-like repetition or echoing of vocalizations or words spoken by another person.

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Flight of Ideas

Thought Process

A rapid, continuous flow of accelerated speech with abrupt, constant shifts from topic to topic, usually linked by subtle associations, play on words, or distractibility.

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Grandiose Delusion

Thought Content

A fixed, false belief of possessing extraordinary wealth, power, identity, talent, or a special relationship with a deity or celebrity.

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Ideas of Reference

Thought Content

The incorrect belief that harmless or neutral external events, objects, or remarks by others have a direct, personal, and unique meaning for oneself.

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Incoherence (Word Salad)

Thought Process

Speech that is fundamentally incomprehensible due to total loss of logical syntax, grammar, and meaningful connections between words.

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Latency of Response

Thought Stream

A pathologically prolonged delay before a speaker begins answering a question or initiating a verbal response.

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Loose Associations (Derailment)

Thought Process

A thought disorder characterized by frequent, abrupt shifts between unrelated ideas mid-sentence or mid-thought, where the logical connections between concepts are missing or idiosyncratic.

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Neologisms

Thought Process

Newly coined words or phrases created by a speaker, or existing words used in idiosyncratic ways, that have private meaning known only to the individual.

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Overvalued Idea

Thought Content

An unreasonable, sustained belief maintained with less intensity than a fixed delusion, occupying a central position in the individual's life.

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Persecutory Delusion

Thought Content

A fixed, false belief that oneself or one's group is being targeted, spied on, conspired against, poisoned, or otherwise maligned by external forces.

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Perseveration

Thought Process

The involuntary, persistent repetition of a specific phrase, word, or motor response despite the absence or change of the original stimulus.

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Poverty of Content of Speech

Thought Process

Speech that is adequate in quantity and fluency, but conveys remarkably little information due to vagueness, repetition, or obscure phrases.

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Poverty of Speech (Alogia)

Thought Stream

A quantitative reduction in speech output characterized by brief, unelaborated, and monosyllabic responses to questions.

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Pressured Speech

Thought Stream

Speech that is pathologically rapid, loud, intense, and difficult or impossible to interrupt, reflecting accelerated thought production.

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Tangentiality

Thought Process

Speech that drifts away from the main topic through loose associations without ever returning to answer the original point.

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Thought Blocking

Thought Process

A sudden, involuntary interruption in the train of thought mid-sentence, leaving the speaker's mind blank and unable to recall what was being said.

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Thought Broadcasting

Thought Content

A delusional belief that one's unspoken thoughts are being transmitted, broadcasted, or made audible to others in the surrounding environment.

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Thought Insertion

Thought Content

A delusional belief that thoughts are being placed directly into one's mind by an external force, agency, or person.

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Thought Withdrawal

Thought Content

A delusional belief that one's thoughts are being actively removed, extracted, or erased from their mind by an external force or entity.

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