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The 20-item dysexecutive questionnaire after severe traumatic brain injury: Distribution of the total score and its significance.

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Title: The 20-item dysexecutive questionnaire after severe traumatic brain injury: Distribution of the total score and its significance.
Authors: Câmara-Costa, Hugo (AUTHOR), Dellatolas, Georges (AUTHOR), Jourdan, Claire (AUTHOR), Ruet, Alexis (AUTHOR), Bayen, Eléonore (AUTHOR), Vallat-Azouvi, Claire (AUTHOR), Allain, Philippe (AUTHOR), Chevignard, Mathilde (AUTHOR), Azouvi, Philippe (AUTHOR)
Source: Neuropsychological Rehabilitation. Jun2025, Vol. 35 Issue 5, p1059-1080. 22p.
Subjects: Executive function, Brain injuries, Gaussian distribution, Anxiety, Control groups, Test anxiety
Abstract: The Dysexecutive questionnaire (DEX), a 20-item ecological measure used by patients (DEX-S) or significant others (DEX-SO) to assess dysexecutive syndrome, often complements performance-based executive functions (EF) tests. Previous studies highlighted its internal consistency, score variability across samples, weak DEX-S correlations with EF tests, but strong associations with self-assessments of anxiety/depression. This study examined DEX-S and DEX-SO scores from the PariS-TBI study, analyzing data from 76 severe TBI participants and 40 proxies assessed 8-years postinjury compared to matched healthy controls. DEX scores in the control group followed a normal distribution, but severe TBI participants reported significantly higher percentages of very low DEX scores and significantly higher percentages of extremely high scores in both self-reports and proxy-reports. Strong correlations were found between DEX-S and self-reported anxiety/depression (rho = 0.65, p < 0.001). These findings suggest a possible lack of self-awareness in some TBI participants, a probable tendency of some TBI-proxies to underestimate EF difficulties, and the presence of EF difficulties in the TBI group compared to controls. The tendency among some TBI participants and proxies to respond to the DEX questions based on their positive or negative valence (presence of a "valence bias"), rather than specific content, potentially elucidates our results and prior published DEX findings. Trial registration: ClinicalTrials.gov identifier: NCT01437683.. [ABSTRACT FROM AUTHOR]
Copyright of Neuropsychological Rehabilitation is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: The 20-item dysexecutive questionnaire after severe traumatic brain injury: Distribution of the total score and its significance.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Neuropsychological+Rehabilitation%22&quot;&gt;Neuropsychological Rehabilitation&lt;/searchLink&gt;. Jun2025, Vol. 35 Issue 5, p1059-1080. 22p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Executive+function%22&quot;&gt;Executive function&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Brain+injuries%22&quot;&gt;Brain injuries&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Gaussian+distribution%22&quot;&gt;Gaussian distribution&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Anxiety%22&quot;&gt;Anxiety&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Control+groups%22&quot;&gt;Control groups&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Test+anxiety%22&quot;&gt;Test anxiety&lt;/searchLink&gt;
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  Data: The Dysexecutive questionnaire (DEX), a 20-item ecological measure used by patients (DEX-S) or significant others (DEX-SO) to assess dysexecutive syndrome, often complements performance-based executive functions (EF) tests. Previous studies highlighted its internal consistency, score variability across samples, weak DEX-S correlations with EF tests, but strong associations with self-assessments of anxiety/depression. This study examined DEX-S and DEX-SO scores from the PariS-TBI study, analyzing data from 76 severe TBI participants and 40 proxies assessed 8-years postinjury compared to matched healthy controls. DEX scores in the control group followed a normal distribution, but severe TBI participants reported significantly higher percentages of very low DEX scores and significantly higher percentages of extremely high scores in both self-reports and proxy-reports. Strong correlations were found between DEX-S and self-reported anxiety/depression (rho = 0.65, p &lt; 0.001). These findings suggest a possible lack of self-awareness in some TBI participants, a probable tendency of some TBI-proxies to underestimate EF difficulties, and the presence of EF difficulties in the TBI group compared to controls. The tendency among some TBI participants and proxies to respond to the DEX questions based on their positive or negative valence (presence of a &quot;valence bias&quot;), rather than specific content, potentially elucidates our results and prior published DEX findings. Trial registration: ClinicalTrials.gov identifier: NCT01437683.. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Neuropsychological Rehabilitation is the property of Taylor &amp; Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.1080/09602011.2024.2387065
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        Text: English
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      – SubjectFull: Executive function
        Type: general
      – SubjectFull: Brain injuries
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      – SubjectFull: Gaussian distribution
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      – SubjectFull: Control groups
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      – SubjectFull: Test anxiety
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              Text: Jun2025
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