Marzieh Shiri Aminlou; Parviz Sharifi Daramadi; Javad Khalatbari
Abstract
This research was conducted to determine the diagnostic validity of the fifth edition of the Wechsler Intelligence Scales for Children (WISC-V) in students with learning disabilities in Tehran. The methodological approach employed in this study is specifically within the domain of psychometrics, which ...
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This research was conducted to determine the diagnostic validity of the fifth edition of the Wechsler Intelligence Scales for Children (WISC-V) in students with learning disabilities in Tehran. The methodological approach employed in this study is specifically within the domain of psychometrics, which is a subfield of methodology studies. The statistical population of this study encompassed all elementary school students (from the first to fourth grade) studying in Tehran during the academic year 2018-2019. The sample size involved 400 students with learning disabilities who were chosen through a targeted and accessible sampling method, in addition to an additional 400 students without learning disabilities who were randomly selected in adherence with the study objectives. This study utilized the fifth edition of the Wechsler Intelligence Scales for Children (WISC-V) as the primary measurement tool. The diagnostic validity of the assessment was evaluated through the application of sensitivity coefficient and clarity methodologies. Upon examination, the study concluded that the Vocabulary and Information subtests (from the Verbal Comprehension Index), Arithmetic (from the Fluid Reasoning Scale), Number Span (forward and backward), Picture Span, Letter-Digit Sequencing, and Letter-Number Sequencing (from the Working Memory Scale), as well as Coding, Cancellation (random), and Cancellation (structural) subtests (from the Processing Speed Index) hold diagnostic validity. Therefore, it can be concluded that the fifth edition of the Wechsler Intelligence Scales for Children (WISC-V) possesses diagnostic validity and can effectively distinguish students with learning disabilities from those within the normative range.
