Sign language delays in deaf 3- to 5-year-olds with deaf parents.

Research has demonstrated that deaf children of deaf signing parents (DOD) are afforded developmental advantages. This can be misconstrued as indicating that no DOD children exhibit early language delays (ELDs) because of their early access to a visual language. Little research has studied this presumption. In this study, we examine 174 ratings of DOD 3- to 5-year-old children, for whom signing in the home was indicated, using archival data from the online database of the Visual Communication and Sign Language Checklist. Our goals were to (1) examine the incidence of ELDs in a cohort of DOD children; (2) compare alternative scaling strategies for identifying ELD children; (3) explore patterns among behavioral ratings with a view toward developing a greater understanding of the types of language behaviors that may lie at the root of language delays; and (4) suggest recommendations for parents and professionals working with language-delayed DOD children. The results indicated that a significant number of ratings suggested ELDs, with a subset significantly delayed. These children likely require further evaluation. Among the less delayed group, ASL skills, rather than communication or cognition, were seen as the major concern, suggesting that even DOD children may require support developing linguistically accurate ASL. Overall, these findings support the need for early and ongoing evaluation of visual language skills in young DOD children.

ASL Developmental Trends Among Deaf Children, Ages Birth to Five.

Language development is an important facet of early life. Deaf children may have exposure to various languages and communication modalities, including spoken and visual. Previous research has documented the rate of growth of English skills among young deaf children, but no studies have investigated the rate of ASL acquisition. The current paper examines young deaf children's acquisition of ASL skills, the rate of growth over time, and factors impacting levels and growth rates. Seventy-three children ages birth to 5 were rated three times using the Visual Communication and Sign Language Checklist and given a scaled score at each rating. An average monthly gain score was calculated for each participant. The presence of a deaf parent, use of ASL at home, use of cochlear implant(s), whether the child was born deaf, and age of initial diagnosis were analyzed for their impact on the level of ASL skill and rate of growth. Results indicated that the use of ASL in the home has a significant positive effect on deaf children's ASL skill level. Additionally, children with lower initial ratings showed higher rates of growth than those with higher initial ratings, especially among school-aged children. The paper discusses implications and directions for future studies.

Psychometric Characteristics of the Visual Communication and Sign Language Checklist.

Since its publication in 2013, the Visual Communication and Sign Language (VCSL) Checklist has been widely utilized to assess the development of early American Sign Language skills of deaf children from birth to age 5. However, little research has been published using the results of VCSL assessments. Notably, no psychometric analyses have been conducted to verify the validity of the VCSL in a population whose characteristics are different from those of the small sample of native signing children from whom the published norms were created. The current paper, using data from the online version of the VCSL (VCSL:O), addresses this shortcoming. Ratings of the 114 VCSL items from 562 evaluations were analyzed using a partial-credit Rasch model. Results indicate that the underlying skill across the age range comprises an adequate single dimension. Within the items' age groupings, however, the dimensionality is not so clear. Item ordering, as well as item fit, is explored in detail. In addition, the paper reports the benefits of using the resulting Rasch scale scores, which, unlike the published scoring strategy that focuses on basal and ceiling performance, makes use of the ratings of partial credit, or emerging, skills. Strategies for revising the VCSL are recommended.

Characteristics of Psychologists Assessing Deaf and Hard of Hearing Clients.

Psychological assessment plays a large part in the practice of psychology. Over the years, steps have been taken towards ensuring ethical and culturally sensitive psychological assessment for underserved populations, but little is known about the current state of the field of assessment of deaf and hard-of-hearing (DHH) individuals. An exploratory survey of school and clinical psychologists who work with DHH clients (n = 30) was conducted to obtain a snapshot of the state of the field. The current article focuses on sociodemographic characteristics, clinical training, clinical experiences, and language abilities of clinical psychologists who work with DHH clients. Participants averaged 15 years of assessment experience and almost all participants had some type of specialized training in assessing DHH clients. More than half of participants reported their ability to use multiple languages and communication approaches as either excellent or good. Current findings were compared with a similar survey from nearly 50 years ago (Levine, E. S. (1974). Psychological tests and practices with the deaf: A survey of the state of the art. Volta Review, 76, 298-319), and significant differences were found in participants' self-reported experience with DHH clients, training, and methods of communication.

Early visual language skills affect the trajectory of literacy gains over a three-year period of time for preschool aged deaf children who experience signing in the home.

Previous research has established a correlation between literacy skills and sign language skills among deaf children raised in signing families, but little research has examined the impact of early signing skills on the rate of growth of emergent literacy in early childhood. A subset of data was extracted from a larger dataset containing national longitudinal data from a three-year investigation of early literacy development of deaf children who were between the ages of three and six at the outset of the study. Selection criteria for inclusion in this limited sample included: 1) being rated as having little or no access to spoken language and 2) being raised in homes in which signs were regularly used as a means of communication (N = 56). Our purpose was twofold: 1) to examine and describe the trajectories of growth in letter and word identification skill for this sample in relation to the participants' initial ages; and 2) to assess the degree to which the presence or deaf parents in the home (DoD) and the receptive American Sign Language (ASL) skills of the participants impacted both the level of emerging print literacy and its rate of growth over the three year period. We hypothesized that both the presence of a deaf parent in the home and the acquisition of ASL skills, a strong native language, would contribute to both the overall letter and word identification skills and to the rates of growth of this skill over time. Results indicated that having a deaf parent did, indeed, impact emergent literacy attainment, but its effect was rendered nonsignificant when ASL skill was taken into consideration. Possession of stronger ASL skills, whether or not the children had deaf parents, contributed significantly to both the levels and rate of growth. The findings contribute to the body of work that emphasizes the importance early language skills (spoken or signed) to later academic success and dispels the myth that deaf children with deaf parents have exclusive access to the acquisition of these skills.

Neuropsychological assessment of persons with physical disability, visual impairment or blindness, and hearing impairment or deafness.

Conducting assessment with individuals with physical disability, visual impairment or blindness, and hearing impairment or deafness poses significant challenges for the neuropsychologist. Although standards for psychological testing have been devised to address assessment of persons with disabilities, little research has been conducted to validate neuropsychological test accommodation and modification practices that deviate from standard test administration or to develop test parameters and interpretive guidelines specifically for persons with different physical or sensory disabilities. This paper reviews issues pertaining to neuropsychological test selection and administration, common accommodation and modification practices, test development and validation, and disability-related factors that influence interpretation of test results. Systematic research is needed to develop methodological parameters for testing and to ensure reliable and valid neuropsychological assessment practices for individuals with physical or sensory disabilities.