Language skills differences between adults without formal education and low formal education

Purpose: The objectives of this study were (a) to linguistically and culturally adapt the English bedside version of the Western Aphasia Battery–Revised (Bedside WAB-R) into Moroccan Arabic (MA) and (b) to assess its psychometric properties. Method: The Bedside MA-WAB-R was piloted on a population of 20 participants after a process of linguistic adaptation from English to MA. To verify the psychometric properties of the test, a group of healthy controls ( n = 106) and a group of persons with chronic aphasia ( n = 52) completed the Bedside MA-WAB-R. The test's content validity, construct validity, and the concurrent validity of the aphasia classification system were examined. In addition, the interrater reliability, intrarater reliability, test–retest reliability, and internal consistency of the instrument were evaluated. Results: The results indicated that the Bedside MA-WAB-R overall met standard criteria for excellent psychometric properties, as evinced by high content and construct validity and concurrent validity with independent measures of aphasia diagnosis (speech-language pathologists' impression and lesion location) as well as high internal consistency, inter- and intrarater reliability, and test–retest reliability. The test was also found to have very high sensitivity and specificity for the detection of aphasia, as revealed by the performance of controls. By controlling for age and educational level effects, specific cutoff values were determined to optimize the aphasia diagnosis. Conclusions: The Bedside MA-WAB-R is the first standardized quick aphasia assessment tool with associated psychometric properties for clinical use with an MA-speaking population, particularly within the 26- to 58-year age range. It meets standard criteria for a valid and reliable measure than can have a variety of clinical and research applications.

show abstract

Can Nonliterates Interact as Easily as Literates with a Virtual Reality System? A Usability Evaluation of VR Interaction Modalities

Gul

Khan

Shah

et al. 2023

Systems

View full text Add to dashboard Cite

The aim of the study is twofold: to assess the usability of a virtuality (VR) interaction designed for nonliterate users in accordance with ISO-Standard 9241-11 and to compare the feasibility of two interaction modalities (motion controllers and real hands) considering the impact of VR sickness. To accomplish these goals, two levels were designed for a VR prototype application. The system usability scale (SUS) was used for self-reported satisfaction, while effectiveness and efficiency were measured based on observations and logged data. These measures were then analyzed using exploratory factor analysis, and the ones with high factor loading were selected. For this purpose, two studies were conducted. The first study investigated the effects of three independent variables on the interaction performance of a VR system, i.e., “User Type,” “Interaction Modality,” and “Use of New Technology.” The SUS results suggest that all the participants were satisfied with the application. The results of one-way ANOVA tests showed that there were no significant differences in the use of the VR application among the three selected user types. However, some measures, such as task completion time in level one, showed significant differences between user types, suggesting that nonliterate users had difficulty with the grab-and-move interaction. The results of the multivariate analysis using statistically significant variables from both ANOVA tests were also reported to verify the effect of modern technology on interactivity. The second study evaluated the interaction performance of nonliterate adults in a VR application using two independent variables: “Interaction Modality” and “Years of Technological Experience.” The results of the study showed a high level of satisfaction with the VR application, with an average satisfaction score of 90.75. The one sample T-tests indicated that the nonliterate users had difficulty using their hands as the interaction modality. The study also revealed that nonliterates may struggle with the poses and gestures required for hand interaction. The results suggest that until advancements in hand-tracking technology are made, controllers may be easier for nonliterate adults to use compared to using their hands. The results underline the importance of designing VR applications that are usable and accessible for nonliterate adults and can be used as guidelines for creating VR learning experiences for nonliterate adults.

show abstract

Language skills differences between adults without formal education and low formal education

Cited by 3 publications

References 35 publications

Illiteracy, Neuropsychological Assessment, and Cognitive Rehabilitation: A Narrative Review

Illiteracy, Neuropsychological Assessment, and Cognitive Rehabilitation: A Narrative Review

The Moroccan Arabic Bedside Western Aphasia Battery–Revised: Linguistic and Psychometric Properties

Can Nonliterates Interact as Easily as Literates with a Virtual Reality System? A Usability Evaluation of VR Interaction Modalities

Contact Info

Product

Resources

About