Psychometric Properties of the Jordanian Picture Test from the Wexler-4 Intelligence Scale in Sign Language for the Deaf (Ages 6–16.11 Years)

This study focuses on developing and validating a Jordanian version of the WISC-4 intelligence scale in sign language for deaf children aged 6 to 16.11 years. The aim is to assess the psychometric properties, including validity and reliability, of this version to serve as a trustworthy tool for measuring the cognitive abilities of deaf children in Jordan using sign language, aligned with their linguistic and cultural characteristics. A descriptive approach was employed, and the sample consisted of 413 deaf children from various regions across the country. The results demonstrated that the Jordanian version exhibits high content validity, with strong correlations between performance on subtests and total IQ scores, indicating good construct validity. The scale also showed high reliability across different stability measures. Additionally, significant differences were found between subgroups based on hearing impairment severity and age, supporting the sensitivity of the scale to sample characteristics. In conclusion, the Jordanian version of the WISC-4 is suitable for assessing the intelligence of deaf children in Jordan, providing accurate and reliable tools for cognitive evaluation via sign language, and emphasizes the need for further research into language and hearing impairments.