A person is said to have illusion when there is :

Appeared in: IGNOU PB Bsc Entrance-2022

Explanation

An illusion is defined as a misinterpretation or misperception of a real, external stimulus.
The key element is the presence of an actual object or sound in the environment that is then perceived incorrectly.
A classic example is mistaking the rustling of leaves for whispering voices or seeing a coat on a chair in a dark room as a person.
This is distinct from a hallucination, where no external stimulus exists.

Why Other Options Were Wrong

Option A: This is the definition of a hallucination, which is a sensory perception experienced in the absence of any real external stimulus.
Option C: This describes hyperesthesia, which is an abnormal and excessive sensitivity to sensory stimuli like touch, sound, or sight. It's about the intensity of sensation, not the interpretation.
Option D: This is a very broad term. While an illusion is a type of sensory distortion, it is not the most precise and specific definition. The term 'misinterpretation of actual stimuli' is more accurate.

Related Visual

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition of Illusion as background academic context rather than a clinical decision trigger.
Recognizing the difference between illusions and hallucinations is critical for accurate nursing assessment and diagnosis in psychiatric care.
Nursing interventions for illusions focus on manipulating the environment to reduce misinterpretation, such as ensuring adequate lighting and reducing clutter.
Patient safety is paramount, as misinterpretations can lead to fear, agitation, and unpredictable behavior. The nurse must create a safe and therapeutic environment.

How to Approach the Question

First, identify the core concept in the question, which is 'illusion'.
This is a factual recall question that tests your knowledge of psychiatric terminology.
Recall the specific definition of an illusion from your studies: it involves a real stimulus that is misinterpreted.
Carefully evaluate each option against this definition.
Eliminate options that define other concepts. Option A defines hallucination (no stimulus). Option C defines hyperesthesia (increased intensity).
Select the option that provides the most precise and accurate definition of an illusion.

Concept Tested & Keywords

Concept Tested: Definition of Illusion
Stem keywords: illusion, perception
Lead-in keywords: when there is
Negative lead-in flag: false

Question ID

Qzx0lgZ-_yMxNqxVM7vHoE

Reference Book

E6 Robert Boland, Marcia L. Verduin - Kaplan and Sadock's Comprehensive Text of Psychiatry-Wolters Kluwer Health (2024) (pp 1-16525 of 16525) pp. 3814-3816, 3815-3817, 3250-3252

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