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Pseudohallucinations: a conceptual history

G E Berrios¹, T R Dening

¹Department of Psychiatry, University of Cambridge.

Psychological Medicine

|July 1, 1996

Summary

Pseudohallucinations lack a clear definition, causing diagnostic confusion in psychopathology. Historical analysis reveals this term is a vicarious construct, hindering precise understanding of hallucinations.

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Area of Science:

Psychopathology
Clinical Psychology
Philosophy of Medicine

Background:

The term 'pseudohallucination' describes imaginal experiences, but its relationship to true hallucinations is unclear.
Clinicians and psychopathology specialists lack consensus on its definition and diagnostic utility.
Empirical research is hampered by the term's unstable referent.

Purpose of the Study:

To conduct a historical and conceptual analysis of the term 'pseudohallucination'.
To elucidate the reasons behind the ambiguous status and definition of pseudohallucinations.
To address the diagnostic challenges posed by the concept of pseudohallucination.

Main Methods:

Historical analysis of the term 'pseudohallucination'.
Conceptual analysis of its relationship with 'hallucinations proper'.
Examination of its usage within descriptive psychopathology.

Main Results:

The term 'pseudohallucination' has never had a stable convergence of word, concept, and behavior.
Its definition is parasitical on the unstable concept of hallucination.
It functions as a vicarious construct, serving temporary conceptual needs rather than reflecting a biological invariant.

Conclusions:

Pseudohallucination acts as a 'joker' in diagnostics, leading to complacency and delaying clarity on hallucinations.
Current psychopathology language is insufficiently nuanced for a stable definition.
The boundaries and usage of pseudohallucination are likely to remain imprecise.

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