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BACKGROUND: Many autistic adults report interpersonal traumas (IPTs) such as physical or sexual assault, which are often associated with posttraumatic stress and dissociation. Factors such as gender might make autistic individuals particularly vulnerable to experiencing IPT and negative posttraumatic symptoms. METHODS: In this study, 687 self-identified autistic adults completed an online survey on their traumatic experiences and mental health symptoms. RESULTS: Seventy-two percent of participants reported experiencing sexual assault, other unwanted or uncomfortable sexual experiences, or physical assault. Forty-four percent of participants met the criteria for posttraumatic stress disorder (PTSD), including 50% of those who had experienced IPT and 28% of those who had not (odds ratio = 2.50; 95% confidence interval 1.74–3.60). IPT was also significantly associated with higher levels of psychoform (p

The present study was conducted to replicate bilingual advantages in short-term memory for language-like material and word learning in young adults and extend this research to the sign doma...

The present study aimed to identify predictors of one aspect of sign language acquisition, sign learning, in hearing nonsigners. Candidate predictors were selected based on the theory that the observed relationship between phonological short-term memory and L2 lexical learning is due in part to common perceptual-motor processes. Hearing nonsigning adults completed a sign learning task, three assessments of short-term memory for movements (movement STM)— two of which used sign-like stimuli—and two visuospatial STM tasks. The final sample included 103 adults, ranging between 18 and 33 years of age. All predictors were moderately to strongly correlated with the sign learning task and to each other. A series of regression analyses revealed that both movement and visuospatial STM uniquely contributed to the prediction of sign learning. These results suggest that perceptual-motor processes play a significant role in sign learning and raise questions about the role of phonological processing.

The present study aimed to identify predictors of one aspect of sign language acquisition, sign learning, in hearing nonsigners. Candidate predictors were selected based on the theory that the observed relationship between phonological short-term memory and L2 lexical learning is due in part to common perceptual-motor processes. Hearing nonsigning adults completed a sign learning task, three assessments of short-term memory for movements (movement STM; two of which used sign-like stimuli), and two visuospatial STM tasks. The final sample included 103 adults, ranging between 18 and 33 years of age. All predictors were moderately to strongly correlated with the sign learning task and to each other. A series of regression analyses revealed that both movement and visuospatial STM uniquely contributed to the prediction of sign learning. These results suggest that perceptual-motor processes play a significant role in sign learning and raise questions about the role of phonological processing.

This article describes the case of a deaf native signer of American Sign Language (ASL) with a specific language impairment (SLI). School records documented normal cognitive development but atypical language development. Data include school records; interviews with the child, his mother, and school professionals; ASL and English evaluations; and a comprehensive neuropsychological and psychoeducational evaluation, and they span an approximate period of 7.5 years (11;10-19;6) including scores from school records (11;10-16;5) and a 3.5-year period (15;10-19;6) during which we collected linguistic and neuropsychological data. Results revealed that this student has average intelligence, intact visual perceptual skills, visuospatial skills, and motor skills but demonstrates challenges with some memory and sequential processing tasks. Scores from ASL testing signaled language impairment and marked difficulty with fingerspelling. The student also had significant deficits in English vocabulary, spelling, reading comprehension, reading fluency, and writing. Accepted SLI diagnostic criteria exclude deaf individuals from an SLI diagnosis, but the authors propose modified criteria in this work. The results of this study have practical implications for professionals including school psychologists, speech language pathologists, and ASL specialists. The results also support the theoretical argument that SLI can be evident regardless of the modality in which it is communicated.

Gaze following plays a role in parent-infant communication and is a key mechanism by which infants acquire information about the world from social input. Gaze following in Deaf infants has been understudied. Twelve Deaf infants of Deaf parents (DoD) who had native exposure to American Sign Language (ASL) were gender-matched and age-matched (±7 days) to 60 spoken-language hearing control infants. Results showed that the DoD infants had significantly higher gaze-following scores than the hearing infants. We hypothesize that in the absence of auditory input, and with support from ASL-fluent Deaf parents, infants become attuned to visual-communicative signals from other people, which engenders increased gaze following. These findings underscore the need to revise the 'deficit model' of deafness. Deaf infants immersed in natural sign language from birth are better at understanding the signals and identifying the referential meaning of adults' gaze behavior compared to hearing infants not exposed to sign language. Broader implications for theories of social-cognitive development are discussed. A video abstract of this article can be viewed at https://youtu.be/QXCDK_CUmAI.

A considerable amount of research has been devoted to understanding individual differences in lexical learning, however, the majority of this research has been conducted with spoken languages rather than signed languages and thus we know very little about the cognitive processes involved in sign learning or the extent to which lexical learning processes are specific to word learning. The present study was conducted to address this gap. Two-hundred thirty-six non-signing adults completed 25 tasks assessing word learning and sign learning (via associative learning paradigms) as well as modality-specific phonological short-term memory, working memory capacity, crystallized intelligence, and fluid intelligence. Latent variable analyses indicated that, when other variables were held constant, fluid intelligence was predictive of both word and sign learning, however, modality-specific phonological short-term memory factors were only predictive of lexical learning within modality-none of the other variables made significant independent contributions. It was further observed that sign and word learning were strongly correlated. Exploratory analyses revealed that all lexical learning tasks loaded onto a general factor, however, sign learning tasks loaded onto an additional specific factor. As such, this study provides insight into the cognitive components that are common to associative L2 lexical learning regardless of language modality and those that are unique to either signed or spoken languages. Results are further discussed in light of established and more recent theories of intelligence, short-term memory, and working memory.

There is a growing population of older adults with long-term sensory and mobility impairments, who may be “aging with a disability”. Little is known about their everyday challenges as they experience normative age-related changes, such as declines in vision, cognition, and motor functioning. The Aging Concerns, Challenges, and Everyday Solution Strategies (ACCESS) study is a large-scale, mixed method study investigating user needs of individuals aging with impairment. The goal is to enroll 60 participants (aged 60–79) in each of the three target populations (blind/low vision, Deaf/hard of hearing, mobility impaired); current sample size = 151). We are developing a taxonomy of needs, organized by activity (e.g., transportation, healthcare), challenge (e.g., accessibility, need assistance) and response to the challenge (e.g., persevere, use tool). The data provide insights into unmet needs among older adults with long-term sensory and mobility impairments and provide guidance for design of supportive technologies for this understudied population.

Technology holds great potential to support Deaf individuals as they age into older adulthood. However, it is unclear to what extent Deaf seniors are using technology in everyday life or whether they experience challenges in using technology. The current study explored technology use among older Deaf adults with regard to attitudes, adoption style, and frequency of use for a wide range of technologies, including assistive technologies (ATs) for persons with hearing loss and general, everyday technologies.We developed a questionnaire that assessed older Deaf adults' use of and experiences with technology. The questionnaire was made available in online and paper versions. Participants (N = 109) were recruited from national conferences and organizations for the Deaf.Overall, we found that the older Deaf adults were technology adopters and regularly use and feel comfortable with a variety of devices. However, we also identified a number of technologies that are not being used by this population, including an AT that appears to have become obsolete and technologies that use sound-based alerts.Insights on how older Deaf adults are embracing technology and which devices they are actually using can help policy makers, technology developers, and a range of aging services professionals, better meet the needs of this understudied population. Implications for Rehabilitation: Older Deaf adults use a variety of assistive and everyday technologies and must be considered as consumers and included in the design process. Older Deaf adults are generally positive in their attitudes towards technologies but they are infrequent users of potentially beneficial health technologies, highlighting opportunities for future research and development. Assistive technology for the Deaf (TTY/TTD) appears to have become obsolete with advances in modern communication technologies, which has implications for policy decisions.

Many individuals with long-term impairments use assistive technologies to enable them to participate in everyday activities. As their capabilities change with age, it is crucial to determine if their support needs are still being met, and if not, how to adapt or integrate technology supports. The Aging Concerns, Challenges, and Everyday Solution Strategies (ACCESS) Study provides a comprehensive user needs assessment for older adults with long-term vision, hearing, and mobility impairments. ACCESS is a two-part study comprised of questionnaires (e.g., demographics, health, functional limitations) and an in-depth interview assessing challenges with a range of daily activities and current strategies for overcoming them. Participants are between the ages of 60–79 in each target population (blind/low vision, Deaf/hard of hearing, mobility impaired). Data will provide insights into unmet needs among older adults with long-term sensory and mobility impairments and will provide guidance for the design of supportive technologies for this understudied population.

In signed languages, the articulatory space in front of the signer is used grammatically, topographically, and to depict a real or imagined space around a signer and thus is an important consideration in signed language acquisition. It has been suggested that children who acquire signed languages rely on concomitant visual-spatial development to support their linguistic development. We consider the case of a native-signing deaf adolescent female with average intelligence who had been reported to struggle with spatial aspects of American Sign Language (ASL) as a child. Results of a battery of linguistic and nonlinguistic tests suggest that she has relatively good ASL skills with the exception of some specific difficulties on spatial tasks that require attention to ASL and nonlinguistic topographic space or changes in visual perspective (e.g., classifiers and referential shift). This child has some difficulties with visual-spatial abilities, and we suggest that this has affected her acquisition of those aspects of ASL that are heavily dependent on visual-spatial processing.

Purpose This study focused on whether developmental communication disorders exist in American Sign Language (ASL) and how they might be characterized. ASL studies is an emerging field; educators and clinicians have minimal access to descriptions of communication disorders of the signed modality. Additionally, there are limited resources for assessing ASL acquisition. This article is designed to raise clinicians' awareness about developmental communication disorders in ASL and categorize types of atypicality that have been witnessed. Method We conducted 4 focus groups and one 1-on-1 interview with a total of 22 adults (7 Deaf, 15 hearing) who work at bilingual–bicultural (ASL–English) schools for the Deaf. Experiences of these educators and language professionals were analyzed qualitatively using a combination of grounded theory (Charmaz, 2001; Strauss & Corbin, 1998) and a modified van Kaam approach (Moustakas, 1994). Results Participants confirmed observations of children with suspected communication disorders and considered the prevalence, possible etiologies, and psychosocial aspects of such disorders in ASL. They reported frustration at the lack of diagnostic tools for reliable identification and intervention strategies to be used in educational settings. Conclusion This work provides us with practitioner accounts proving that developmental communication disorders do exist in ASL. Future reports will describe primary data from signers with atypical language attributes.

In recent years, scholars have been critical of what they consider unethical conduct by researchers whose studies focus on members of the Deaf or signing communities. This is the first empirical study that investigates ethical concerns and recommendations from the perspective of three stakeholder groups (Deaf research participants, researchers, and Deaf studies experts). We analyzed focus group discussions using strategies from grounded theory and community-based participatory research. The themes we identified highlight the need for the broader scientific research community to include linguistically and culturally sensitive research procedures that more adequately protect the rights of Deaf research participants, as well as other marginalized groups. We address the need to increase the number of Deaf scientists and reconsider collaboration practices between Deaf and hearing researchers.

The present study examines the impact of highly inconsistent input on language acquisition. The American deaf community provides a unique opportunity to observe children exposed to nonnative language models as their only linguistic input. This research is a detailed case study of one child acquiring his native language in such circumstances. It asks whether this child is capable of organizing a natural language out of input data that are not representative of certain natural language principles. Simon is a deaf child whose deaf parents both learned American Sign Language (ASL) after age 15. Simon's only ASL input is provided by his late-learner parents. The study examines Simon's performance at age 7 on an ASL morphology task, compared with eight children who have native signing parents, and also compared with Simon's own parents. The results show that Simon's production of ASL substantially surpasses that of his parents. Simon's parents, like other late learners of ASL, perform below adult native signing criteria, with many inconsistencies and errors in their use of ASL morphology. In contrast, Simon's performance is much more regular, and in fact on most ASL morphemes is equal to that of children exposed to a native signing model. The results thus indicate that Simon is capable of acquiring a regular and orderly morphological rule system for which his input provides only highly inconsistent and noisy data. In addition, the results provide some insight into the mechanisms by which such learning may occur. Although the ASL situation is rare, it reveals clues that may contribute to our understanding of the human capacity for language learning.

We describe the procedures for constructing an instrument designed to evaluate children's proficiency in American Sign Language (ASL). The American Sign Language Proficiency Assessment (ASL-PA) is a much-needed tool that potentially could be used by researchers, language specialists, and qualified school personnel. A half-hour ASL sample is collected on video from a target child (between ages 6 and 12) across three separate discourse settings and is later analyzed and scored by an assessor who is highly proficient in ASL. After the child's language sample is scored, he or she can be assigned an ASL proficiency rating of Level 1, 2, or 3. At this phase in its development, substantial evidence of reliability and validity has been obtained for the ASL-PA using a sample of 80 profoundly deaf children (ages 6-12) of varying ASL skill levels. The article first explains the item development and administration of the ASL-PA instrument, then describes the empirical item analysis, standard setting procedures, and evidence of reliability and validity. The ASL-PA is a promising instrument for assessing elementary school-age children's ASL proficiency. Plans for further development are also discussed.

Individuals ageing with pre-existing sensory and mobility impairments are more likely than ever before to survive into older adulthood. Successful ageing may be complicated for these individuals because of compounding challenges related to their impairment and challenges related to ageing. To promote successful ageing, it is necessary to know where human factors interventions could help older adults with sensory or mobility impairments. The goal of this study was to identify the range of challenges in everyday activities that might be experienced by older adults ageing with pre-existing impairments in vision, hearing, or mobility. As a starting point for research in this area, we present data from interviews with subject matter experts, who represented a range of personal and professional experiences with older adults with these specific pre-existing impairments. The interview data revealed what challenges older adults with sensory and mobility impairments face as they age. Emphasis was placed on challenges in technology use, access to community and health resources, and housing. The results have implications for future research as well as for technology design, instruction, and use. Through alleviating everyday challenges, the human factors community can ultimately improve ageing for this understudied sector of adults with pre-existing sensory and mobility impairments.

This chapter reviews published or known assessments of children’s language proficiency across a number of the world’s signed languages, including American Sign Language, British Sign Language, Australian Sign Language, Sign Language of the Netherlands, and German Sign Language. Critical issues in sign language assessment are also discussed, with special attention to possible threats to test reliability and validity. For example, test examiners may doubt the authenticity of the elicited language sample from a deaf, signing child, or test developers may question whether an adaptation of a spoken-language test is appropriate for use with deaf, signing children. The authors conclude that there remains a critical need in many countries for commercially available, and easy to administer, signed language proficiency assessments for use in research and education settings with deaf and hearing individuals.

The condition of deafness presents a developmental context that provides insight into the biological, cultural, and linguistic factors underlying the development of neural systems that impact social cognition. Studies of visual attention, behavioral regulation, language development, and face and human action perception are discussed. Visually based culture and language provides deaf children with affordances that promote resiliency and optimization in their development of visual engagement, executive functions, and theory of mind. These experiences promote neural adaptations permitting nuanced perception of classes of linguistic and emotional-social behaviors. Studies of deafness provide examples of how interactions and contributions of biological predispositions and genetic phenotypes with environmental and cultural factors including childhood experiences and actions of caregivers shape developmental trajectories (M. I. Posner & M. K. Rothbart, 2007).

The focus of this review article is on families with Deaf parents and hearing children. We provide a brief description of the Deaf community, their language, and culture; describe communication patterns and parenting issues in Deaf-parented families, examine the role of the hearing child in a Deaf family and how that experience affects their functioning in the hearing world; and discuss important considerations and resources for families, educators, and health care and service providers.

The written English vocabulary of 72 deaf elementary school students of various proficiency levels in American Sign Language (ASL) was compared with the performance of 60 hearing English-as-a-second-language (ESL) speakers and 61 hearing monolingual speakers of English, all of similar age. Students were asked to retell "The Tortoise and the Hare" story (previously viewed on video) in a writing activity. Writing samples were later scored for total number of words, use of words known to be highly frequent in children's writing, redundancy in writing, and use of English function words. All deaf writers showed significantly lower use of function words as compared to their hearing peers. Low-ASL-proficient students demonstrated a highly formulaic writing style, drawing mostly on high-frequency words and repetitive use of a limited range of function words. The moderate- and high-ASL-proficient deaf students' writing was not formulaic and incorporated novel, low-frequency vocabulary to communicate their thoughts. The moderate- and high-ASL students' performance revealed a departure from findings one might expect based on previous studies with deaf writers and their vocabulary use. The writing of the deaf writers also differed from the writing of hearing ESL speakers. Implications for deaf education and literacy instruction are discussed, with special attention to the fact that ASL-proficient, deaf second-language learners of English may be approaching English vocabulary acquisition in ways that are different from hearing ESL learners.

Grammatical properties are found in conventional sign languages of the deaf and in unconventional gesture systems created by deaf children lacking language models. However, they do not arise in spontaneous gestures produced along with speech. The authors propose a model explaining when the manual modality will assume grammatical properties and when it will not. The model argues that two grammatical features, segmentation and hierarchical combination, appear in all settings in which one human communicates symbolically with another. These properties are preferentially assumed by speech whenever words are spoken, constraining the manual modality to a global form. However, when the manual modality must carry the full burden of communication, it is freed from the global form it assumes when integrated with speech--only to be constrained by the task of symbolic communication to take on the grammatical properties of segmentation and hierarchical combination.

In these studies, the As compare (1) a conventional sign language used by a community of signers and passed down from generation to generation with (2) gestures invented by a deaf child over a period of years and (3) gestures invented by nonsigning hearing individuals on the spot. Thus, they compare communication in the manual modality created over three different timespans - historical, ontogenic and microgenetic - focusing on the extent to which the gestures become codified and adhere to internal standards in each of these timespans. Their findings suggest that an individual can introduce standards of well-formedness into a self-generated gesture system, but that gradual development over a period of time is necessary for such standards to be constructed

As the bilingual education movement receives greater attention within deaf education settings, a theoretical framework for organizing and implementing the American Sign Language (ASL) and English learning experiences among deaf students has not been fully articulated in the literature to date. In th