Health TrialsbyHealthPanel

Using Illusions to Boost Social Cognition

ConditionsSchizophrenia Spectrum DisordersSocial Cognition
Trial statusNot yet recruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-40
SponsorHôpital le Vinatier

About this trial

This study aims to explore whether the observation of complex visual objects can help improve social cognition in people living with psychotic disorders. Social cognition refers to the ability to understand what others think, feel, or intend, and plays a key role in social relationships and daily interactions.

Main questions this study aims to answer:

* Does dyadic exposure to complex visual objects improve mental state attribution, as measured by the Faux Pas Test? * Does the intervention enhance related domains of social cognition, including implicit intention inference (Hinting Task), interpretation of complex interactions (Movie for the Assessment of Social Cognition, MASC), and reduction of hostile attribution biases (Ambiguous Intentions Hostility Questionnaire, AIHQ)? * Are improvements maintained after one month, and do patients who receive the intervention later (waitlist group) show the same benefits once exposed?

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Aged 18 to 40 years

Fluent French speaker

Has provided written informed consent

For individuals under guardianship (curatorship): inclusion is permitted if the curator is available to assist or advise when needed.

Disqualifiers

Clinical state incompatible with participation in group-based activities (e.g., severe psychomotor agitation, severe behavioural disturbance)

Concurrent participation in another social cognition remediation program

Diagnosis of intellectual disability

Insufficient comprehension of French for verbal interaction and test completion

Trial design

Design model

Parallel

Treatments tested in this trial

  • Visual-illusion social cognition session (immediate)

    Behavioral

    A guided session of approximately 45 minutes. The core rehabilitation tool consists of multiple-perspective illusion boxes. Each participant stands on one side of the box and perceives a different shape than their partner. The session unfolds in 3 structured phases: 1. For each illusion : Participants observe objects silently and draw what they see. 2. Perspective confrontation + Card selection: Drawings and interpretation cards are exchanged and discussed. 3. Perspective switching : Participants swap positions to reveal the alternative visual interpretation. The session is followed by a short structured discussion with a psychologist focused on perspective-taking and interpretation of social cues.

  • Visual-illusion social cognition session (delayed)

    Behavioral

    A guided session of approximately 45 minutes. The core rehabilitation tool consists of multiple-perspective illusion boxes. Each participant stands on one side of the box and perceives a different shape than their partner. The session unfolds in 3 structured phases: 1. For each illusion : Participants observe objects silently and draw what they see. 2. Perspective confrontation + Card selection: Drawings and interpretation cards are exchanged and discussed. 3. Perspective switching : Participants swap positions to reveal the alternative visual interpretation. The session is followed by a short structured discussion with a psychologist focused on perspective-taking and interpretation of social cues. Delivered after a delay following baseline assessment.

Treatment groups

60 Participants
are divided into 2 treatment groups
Group A: Immediate interventionExperimental treatment 1 intervention
Group B: Delayed Intervention (Wait-list Control)Active comparator 1 intervention

Trial outcomes

Primary outcomes

1

"Faux Pas" test total score

1. Total of correctly recognised "Faux Pas" Score range : 0 - 30 Minimum (0) : no correct detection of faux pas Maximum (30) : all faux pas correctly detected 2. Total of identified absence of "Faux Pas" Score range : 0 - 10 Minimum (0) : incorrectly identifies absence of faux pas Maximum (10) : correctly identifies absence of faux pas 3. Total score of control question comprehension Score range : 0 - 20 Minimum (0) : poor comprehension Maximum (20) : Full comprehension

Time frame
Change from pre to post intervention (up to 3 hours)

Secondary outcomes

1

Hinting Task

1. Number of correctly inferred items with hint 1 Score range : 0 - 20 Minimum (0) : No correct inference of intentions Maximum (20) : All intentions correctly inferred 2. Number of correctly inferred items with hint 2 Score range : 0 - 20 Minimum (0) : No correct inference of intentions Maximum (20) : All intentions correctly inferred

Time frame
Change from pre to post intervention (up to 3 hours)
2

MASC performance

Number of correct responses Score range 0 - 45 Minimum (0) : No correct mental state inference Maximum (45) : All mental states correctly inferred

Time frame
Change from pre intervention to follow-up session (up to a month and a half)

Other outcomes

Sponsors and contacts

Click on the lead sponsor to view all of their trials.

Hôpital le Vinatier

Lead sponsor

INSERM 1028

Collaborator

Source ClinicalTrials.gov

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