Adaptation and Normalization of a Verbal Episodic Memory Test in French Sign Language
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In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Questionnaire and Physical Exam.
- Who it may be relevant to
- Registry conditions: Neuropsychological Tests, Memory, Alzheimer Disease, Deafness. Basic parameters: from 18 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Adaptation and Normalization of a Verbal Episodic Memory Test (16-item Free and Cued Recall / RL-RI 16) in French Sign Language
Overview
To date, neuropsychological assessment of deaf signing persons is complicated by a lack of resources, especially the absence of tools available in French Sign Language (LSF). This is due to perceptual and cultural differences, and in particular the linguistic differences between French and LSF. This lack of resources significantly hinders access to care for deaf patients, as neuropsychological assessment is often a key clinical criterion in the diagnosis of certain neurological pathologies (Alzheimer's disease in particular) and enables coherent care plans to be drawn up, for example in the aftermath of strokes or traumatic brain injuries. In particular, episodic memory (which refers to the ability to memorise information anchored in a specific context) is a cognitive domain that is sensitive to pathologies such as Alzheimer's disease, but it is not currently possible to assess it with deaf signing patients. The aim of this study is to create a memory assessment test adapted to a deaf population that expresses in LSF and to normalize this test on this same population. The aim is to provide a diagnosis assessment tool, which currently does not exist in France, to improve access to care for deaf people. This project could then be extended to the creation of tests for other cognitive domains (executive functions, attention, social cognition, etc.) and to prospects for cognitive remediation. The 16-item Free and Cued Recall test (RL-RI 16) is the best choice because it is easy to use and accurate enough to assess each stage of episodic memory. These qualities make it a decisive tool in certain differential diagnosis. In order to select the most relevant signs, lexical lists by frequency in LSF will be drawn up during a preliminary phase, during which the participants will have to give, in one minute, the maximum number of signs belonging to different categories (animals, vegetables, clothes...). These lists will be used to select the most relevant signs according to their frequency (neither too common nor too rare), based on the same principle as RL-RI 16. It will then be standardised on deaf adults, for whom LSF is the main language, with no cognitive impairment, across France, via the various Deaf Care Units, with the help of French / LSF interpreters. Working with different centers in France will make it possible to recruit a larger and more representative number of participants, and to be more sensitive to any regional effects.
Interventions
- Other Questionnaire and Physical Exam
Neuropsychological assessment: * Phase 1: MMS-LS (overall cognitive efficiency) + fluency tasks (verbal flexibility) * Phase 2: MMS-LS (if the participant did not take part in phase 1), RL-RI LSF (verbal memory), Rey Complex Figure (visuospatial abilities and visual memory), Progressive Matrices, Symbols and Code (executive functions)
Primary outcome measures
- Normed data for the RL-RI-LSF test for a deaf population without cognitive impairment [Time frame: Phase 2: 9 months]
Secondary outcome measures (4)
- Correlation RL-RI LSF / MMS-LS [Time frame: Phase 2: 9 months]
- Reproductibility over time [Time frame: Phase 2: 9 months]
- Normative data for the Rey Complex Figure Test [Time frame: Phase 2: 9 months]
- Normative data for 3 subtests of the WAIS-IV [Time frame: Phase 2: 9 months]
Eligibility criteria
Inclusion criteria
- Person aged ≥ 18 yo
- with severe or profound deafness (hearing loss ≥ 70 decibels)
- whose main language is French Sign Language
- able to consent in writing after a clear explanation of the procedure
- affiliated to the French Healthcare system (Sécurité Sociale) through self or another person
Non-inclusion criteria:
- person with a medical history in neurology (stroke, traumatic brain injury, dementia) or psychiatry bipolar syndrom or schizophrenia that would not be medicated, severe depression)
- persons with medical developmental backgroung (e.g genetic syndrome)
- person with cancer history needing chemotherapy
- person with a diagnosed and untreated sleeping trouble
- person drinking > 10 glasses of alcohol per week or using drugs on a daily basis
- person with visual issues
- person under 18yo or unable to take decisions for self
Exclusion criteria
A score ≤ 20/28 or 17/28 at the MMS-LS test, depending on the schooling of the participant (20/28 for participants with a degree, 17/28 for participants without a degree)
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- N/A
- Model
- Single group
- Masking
- Open label
- Primary purpose
- Diagnostic
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT06902753 · 2024-A02627-40