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Cross-Cultural Adaptation and Evaluation of Psychometric Properties of Persian Version of Supports Intensity Scale among Adults with Intellectual and Developmental Disabilities

SALEHI, Sajed
JAVADIPOUR, Sheyda
NASSADJ, Gholamhossein
HAGHIGHI, Mohammad Hossein
SABOOR, Shiva
SHAKHI, Kamal
2018

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Purpose: This study was designed to translate and assess the psychometric properties of Supports Intensity Scale among adults with intellectual and developmental disability in Ahvaz and Tehran, Iran.

 

Method: The cross-sectional study was carried out in two stages. The first stage consisted of the forward-backward translation of Supports Intensity Scale - Adult Version) SIS-A(. In the second stage, 197 people with intellectual and developmental disabilities were recruited in order to assess the internal consistency and test-retest reliability, concurrent and content validity of SIS-A. The confirmatory factor analysis (CFA) was performed to approve the seven-factor model of the instrument.

 

Results: The intra-class correlation coefficient values varied between 0.85 and 0.99 (very good to excellent). All subscales of the SIS-A showed Cronbach’s alpha above 0.70. Correlation coefficient between SIS-A and Barthel index was about -0.65, which shows excellent concurrent validity of SIS-A. The findings showed SIS-A had high ability to discriminate between groups with different IQ (p<0.05). There was no significant correlation between SIS-A and the age of participants (p>0.05). The result of CFA confirmed that the seven-factor model of SIS-A is the fittest pattern for SIS-A.

 

Conclusion: The results indicated that the Persian version of SIS-A is a valid and reliable instrument to assess function and disability among people with intellectual and developmental disability.

Gender and diagnostic impact on everyday technology use: a differential item functioning (DIF) analysis of the Everyday Technology Use Questionnaire (ETUQ)

KOTTORP, Anders
MALINOWSKY, Camilla
LARSSON-LUND, Maria
NYGARD, Louise
May 2018

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Background: As the use of everyday technology is increasingly important for participation in daily activities, more in-depth knowledge of everyday technology use in relation to diagnosis and gender is needed. The purpose of this study was to investigate the stability of the perceived challenge of a variety of everyday technologies across different samples of varying diagnoses including both males and females.

 

Methods: This cross-sectional study used 643 data records from clinical and research samples, including persons with dementia or related disorders, acquired brain injury, intellectual disability, various mental or medical disorders, and adults without known diagnoses. The Everyday Technology Use Questionnaire, comprising 93 everyday technology artifacts and services (items) measuring the level of everyday technology challenge and relevance of and perceived ability to use these was used for data gathering. A two-faceted Rasch model in combination with differential item functioning (DIF) analyses were used for comparing item hierarchies across samples.

 

Results: Only three items (3.2%) demonstrated a clinically relevant DIF by gender, and nine items (9.7%) by diagnosis.

 

Discussion: The findings support a stable hierarchy of everyday technology challenge in home and community that can facilitate planning of an accessible and inclusive society from a technological departure point

Cognitive Constraints on the Simple View of Reading: A Longitudinal Study in Children With Intellectual Disabilities

VAN WINGERDEN, Evelien
SEGERS, Eliane
VAN BALKOM, Hans
VERHOEVEN, Ludo
2018

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The present article aimed to explore how the development of reading comprehension is affected when its cognitive basis is compromised. The simple view of reading was adopted as the theoretical framework. The study followed 76 children with mild intellectual disabilities (average IQ = 60.38, age 121 months) across a period of 3 years. The children were assessed for level of reading comprehension (outcome variable) and its precursors decoding and listening comprehension, in addition to linguistic skills (foundational literacy skills, rapid naming, phonological short-term memory, verbal working memory, vocabulary, and grammar) and non- linguistic skills (nonverbal reasoning and temporal processing). Reading comprehension was predicted by decoding and listening comprehension but also by foundational literacy skills and nonverbal reasoning. It is con- cluded that intellectual disabilities can affect the development of reading comprehension indirectly via linguistic skills but also directly via nonlinguis- tic nonverbal reasoning ability.

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