The American Sign Language Comprehension Test (ASL-CT) is a 30-item multiple-choice test that measures ASL receptive skills and is administered through a website. This article describes the development and psychometric properties of the test based on a sample of 80 college students including deaf native signers, hearing native signers, deaf…

This article describes the development of new scales for assessing the status of a young child's language comprehension and production. Items and sections on the scales were included to reflect advances in research on language acquisition and impairment. The New Reynell Developmental Language Scales (NRDLS) were trialled on 301 children and then…

English speakers use horizontal spatial metaphors (e.g., before/after) to talk about time relative to vertical spatial metaphors (e.g., up/down), so they may be faster in verifying temporal targets (e.g., June comes after April) that are preceded by primes that activate horizontal, relative to vertical, spatial metaphors. We examined this…

In autism spectrum disorders, results of cognitive testing inform clinical care, theories of neurodevelopment, and research design. The Wechsler Intelligence Scale for Children and the Stanford-Binet are commonly used in autism spectrum disorder evaluations and scores from these tests have been shown to be highly correlated in typically developing…

The present study examined the reliability and validity of the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) for use with deaf and hard-of-hearing (D/HOH) children. Psychologists (n = 10) provided data for 128 D/HOH children who were assessed with the WISC-IV as part of routine assessments. All the WISC-IV subtests (8) and…

Growing recognition of the central importance of fostering an in-depth understanding of natural selection has, surprisingly, failed to stimulate work on the development and rigorous evaluation of instruments that measure knowledge of it. We used three different methodological tools, the Conceptual Inventory of Natural Selection (CINS), a modified…

Methods to automatically convert graphics into tactile representations have been recently investigated, creating either raised-line or relief images. In particular, we briefly review one raised-line method where important features are emphasized. This paper focuses primarily on the effects of such emphasis and on comparing both raised-line and…

Comparisons were made of test scores derived from a sample of American Indian students attending grades 2 through 10, living in a Bureau of Indian Affairs dormitory, and enrolled either in an English as a Second Language Program (N=43) or in the regular school program (N=87) to determine ESL impact on Indian students' English vocabulary,…