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PubMed1987

Temporal processing in deaf signers.

The auditory and visual modalities differ in their capacities for temporal analysis, and speech relies on more rapid temporal contrasts than does sign language. We examined whether congenitally deaf signers show enhanced or diminished capacities for processing rapidly varying visual signals in light of the differences in sensory and language experience of deaf and hearing individuals. Four experiments compared rapid temporal analysis in deaf signers and hearing subjects at three different levels: sensation, perception, and memory. Experiment 1 measured critical flicker frequency thresholds and Experiment 2, two-point thresholds to a flashing light. Experiments 3-4 investigated perception and memory for the temporal order of rapidly varying nonlinguistic visual forms. In contrast to certain previous studies, specifically those investigating the effects of short-term sensory deprivation, no significant differences between deaf and hearing subjects were found at any level. Deaf signers do not show diminished capacities for rapid temporal analysis, in comparison to hearing individuals. The data also suggest that the deficits in rapid temporal analysis reported previously for children with developmental language delay cannot be attributed to lack of experience with speech processing and production.

Adult↗
PubMed1983

Amer-Ind transparency.

Objective and reliable transparency comprehension results have been obtained on the citation form of the 193 Amer-Ind signals as presented in the original Amerind Video Dictionary. Transparency ratings, as determined by three different scoring criteria, as well as the most common errors, are presented. While transparency (42-50%) was considerably less than what has been suggested in previous reports (80-88%) it was, nevertheless, well above what has been reported for signs from American Sign Language. Transparency of repetitive signals was significantly higher than that reported for kinetic and static signals. The implications for clinical practice are discussed.

Adult↗
PubMed1989

Linguistic encoding in short-term memory as a function of stimulus type.

In this study, we investigated bases for encoding linguistic stimuli in short-term memory. Past research has provided evidence for both phonological (sound-based) and cherological (sign-based) encoding, the former typically found with hearing subjects and the latter with deaf users of sign language. In the present experiment, encoding capabilities were delineated from encoding preferences, using 58 subjects comprising six groups differing in hearing ability and linguistic experience. Phonologically related, cherologically related, and control lists were presented orally, manually, or through both modalities simultaneously. Recall performance indicated that individuals encode flexibly, the code actually used being biased by incoming stimulus characteristics. Subjects with both sign and speech experience recalled simultaneous presentations better than ones presented orally or manually alone, which reveals the occurrence of enhanced encoding as a function of linguistic experience. Total linguistic experience appeared to determine recall accuracy following different types of encoding, rather than determining the encoding basis used.

Adult↗
PubMed1994

Critical teaching incidents. Recollections of deaf college students.

In interviews with 56 deaf college students, we collected accounts of 839 "critical incidents" describing effective and ineffective teaching. From those incidents, 33 specific teaching characteristics were derived and were analyzed in relation to teacher, student, and course variables. Our primary goal was to identify the teaching characteristics underlying deaf students' recollections about their classroom learning experiences. The most frequently mentioned characteristics are similar to those found in studies of hearing college students, particularly within the domain of Teacher Affect. The teacher's ability to communicate clearly in sign language, however, was not only a characteristic unique to deaf college students but also the most frequently occurring characteristic of effective teaching in this study.

Communication↗
PubMed1984

A discussion of apraxia, aphasia, and gestural language.

It is understood that damage to the left cerebral hemisphere in adulthood may result in syndromes of language disturbances called the aphasias. The study of these syndromes sheds light on normal language processes, the relationship between language behavior and the brain, and how best to treat aphasic individuals. Aphasia, for some, is a central communication disorder affecting all symbolic behavior in all modalities (i.e., speech, writing, and gesture). Difficulty producing symbolic gestures on command is called apraxia. Others view aphasia as a manifestation of a motor-sequencing disorder affecting all gestural systems including those required for speech movements. These divergent theories of the underlying nature of aphasia can be tested through examination of deaf individuals who use sign language before onset of aphasia. Poizner et al. [Am. J. Physiol. 246 (Regulatory Integrative Comp. Physiol. 15): R868-R883, 1984] studied three such patients with different aphasia syndromes: one patient had a nonsymbolic, motor-sequencing disorder; one had a gestural apraxia; and one had neither. These findings force the conclusion that neither the symbolic nor motor-sequencing theory of aphasia can account for the many varieties of that disorder.

Aphasia↗
PubMed1987

Communication between health care professionals and deaf patients.

A review of the literature about communication between health care professionals and deaf people demonstrates that a continuum of accuracy in perceptions of deaf people and their communication problems exists in health care settings. The author provides information on deaf culture, history, population size, sign language, and communication needs that is used to evaluate professional journal articles. Examples of research on this topic are presented and the need for further studies and the role of social workers are discussed.

Deafness↗
PubMed1984

Progressive addition lenses for deaf lip readers and signers.

Deaf patients depend on intermediate vision for interpersonal communication. Deaf presbyopes are at a particular disadvantage since they are usually corrected for near and far vision with bifocals without consideration of their intermediate vision. Progressive addition lenses were used in this study to provide an intermediate correction for a group of deaf presbyopes. The patients' communication ability was tested through Varilux II lenses and habitual bifocals on a series of standardized lip reading and sign language tests. The patients showed better visual communication skills with the progressive adds, a preference for the progressive adds, and the impression of better vision through the progressive addition lens as opposed to their habitual bifocals.

Aged↗
PubMed1989

Carpal tunnel syndrome: the risk to educational interpreters.

Carpal Tunnel Syndrome (CTS) is a problem associated with numbness, burning, tingling, tickling or "pins and needles" sensations in the hand. The syndrome has been linked to occupations that require repetitive pinching and/or repetitive wrist movements, both movements associated with sign language interpreting. Educational interpretors may be particularly at risk and so need accurate information regarding this malady. Without such education, some interpreters will worry needlessly while others delay in seeking essential medical attention. This article profiles groups at high risk for Carpal Tunnel Syndrome and identifies surgical and rehabilitative treatments.

Carpal Tunnel Syndrome↗
PubMed1991

Issues in providing mental health services to hearing-impaired persons.

Interest in the mental health service needs of hearing-impaired persons has expanded over the past 35 years, but the availability and accessibility of clinical services have lagged behind developments in research. Despite federal mandates, deaf Americans' psychiatric and psychosocial needs remain profoundly underserved. The author provides an overview of deaf culture and the deaf community and discusses issues in communication, including use of American Sign Language and interpreters in clinical settings. Diagnostic considerations, clinical assessment strategies, and inpatient, outpatient, educational, and early intervention treatment strategies are explored, and the needs of special populations, including mentally ill offenders, patients with multiple disabilities, and persons with hearing loss in later life are examined.

Combined Modality Therapy↗
PubMed1995

Hypnosis with signing deaf and hearing subjects.

Historically hypnosis with deaf people has been an underutilized intervention as the deaf were assumed not to be responsive to hypnotic suggestion. Recent research has begun to challenge these assumptions. Matthews and Isenberg (in press) compared the hypnotic responsiveness of deaf and hearing subjects on the Stanford Hypnotic Susceptibility Scale, form C (SHSS:C) all of whom received the hypnotic suggestions via sign language. Those results supported the notion that deaf subjects are capable of responding to hypnotic suggestion and may be as hypnotically responsive as hearing subjects. The purpose of the present article is to examine the similarities and differences of responses between deaf and hearing subjects to the individual items of the SHSS:C and compare those responses to the SHSS:C norms.

Deafness↗
PubMed1983

The use of nonvocal communication techniques with autistic individuals.

Studies reporting the use of sign languages and symbol systems with autistic children and young people are reviewed. The studies suggest that signs and symbols can be used in communication by individuals who are above and below the age of five, mute and mentally handicapped. The communication skills developed may, in some cases, be complex, and speech may develop in the context of sign or symbol programmes. However, problems concerned with the description of subjects, methods and outcome of studies mean that many conclusions can only be supported tentatively by existing data.

Adolescent↗
PubMed1990

Recall of order information by deaf signers: phonetic coding in temporal order recall.

To examine the claim that phonetic coding plays a special role in temporal order recall, deaf and hearing college students were tested on their recall of temporal and spatial order information at two delay intervals. The deaf subjects were all native signers of American Sign Language. The results indicated that both the deaf and hearing subjects used phonetic coding in short-term temporal recall, and visual coding in spatial recall. There was no evidence of manual or visual coding among either the hearing or the deaf subjects in the temporal order recall task. The use of phonetic coding for temporal recall is consistent with the hypothesis that recall of temporal order information is facilitated by a phonetic code.

Adult↗
PubMed1995

Deaf and hard-of-hearing clients: some legal implications.

At least one of every 16 Americans has some degree of hearing loss and may use a variety of communication modes, including spoken English and American Sign Language. With the passage of various federal laws, most notably the Americans with Disabilities Act, social services agencies will need to become more aware of the needs of their deaf and hard-of-hearing clients. This article reviews federal legislation and statutes and their impact on service and legal programs. Legislative mandates for the use of assistive devices and interpreters in various settings are discussed. As service providers and advocates, social workers need to ensure that their own services adequately meet legal and ethical obligations and that the profession advocates for other agencies to do the same.

Deafness↗
PubMed1990

Making adult education accessible to the deaf. A model of direct instructor communication in ASL.

The purpose of this study was to develop a model of direct communication in American Sign Language for mainstreamed adult education courses. The model uses an individual instruction format with limited lecture time. Data were collected for 23 students (12 hearing and 11 deaf) newly enrolled in a mainstreamed word processing class. They were compared on average hours required to complete an exercise, average rates of attendance, and weekly drop rate. Attendance and drop rates were compared for new and returning students in the mainstreamed class (34 students) and 25 hearing students from a nonmainstreamed class. In addition, the average number of hours required to complete the exercises was compared for 10 new hearing students from the mainstreamed class and 11 new hearing students from the nonmainstreamed class. No significant differences were found in any of the comparisons. The study recommends further research to compare this Direct Instructor Communication Model with other more traditional deaf education models.

Adult↗
PubMed1983

On recency and echoic memory.

In short-term memory, the tendency for the last few (recency) items from a verbal sequence to be increasingly well recalled is more pronounced if the items are spoken rather than written. This auditory recency advantage has been quite generally attributed to echoic memory, on the grounds that in the auditory, but not the visual, mode, sensory memory persists just long enough to supplement recall of the most recent items. This view no longer seems tenable. There are now several studies showing that an auditory recency advantage occurs not only in long-term memory, but under conditions in which it cannot possibly be attributed to echoic memory. Also, similar recency phenomena have been discovered in short-term memory when the items are lip-read, or presented in sign-language, rather than heard. This article provides a partial review of these studies, taking a broad theoretical position from which these particular recency phenomena are approached as possible exceptions, to a general theory according to which recency is due to temporal distinctiveness. Much of the fresh evidence reviewed is of a somewhat preliminary nature and it is as yet unexplained by any theory of memory. The need for additional, converging experimental tests is obvious; so too is the need for further theoretical development. Several alternative theoretical resolutions are mentioned, including the possibility that enhanced recency may reflect movement, from sequentially occurring stimulus features, and the suggestion that it may be associated with the primary linguistic mode of the individuals concerned. But special weight is attached to the conjecture that all these recency phenomena might be accounted for in terms of distinctiveness or discriminability. On this view, the enhanced recency effects observed with certain modes, including the auditory mode, are attributed to items possessing greater temporal discriminability in those modes.

Auditory Perception↗
PubMed1980

Culture and deafness in a Maya Indian village.

Over the years, the question of psychosocial adjustment among the deaf has attracted a great deal of attention. Pioneer work by Levine (1960, 1963); Rainer, Altshuler, and Kallmann (1963); Myklebust (1964); Rainer and Altshuler (1968); Grinker (1969); Mindel and Vernon (1971); and Schlesinger and Meadow (1972), to mention but a few, has aided our understanding of how the deaf adjust to the stress which their handicap imposes upon them. We know a great deal less, however, about the deaf in other societies. Altable (1947); Altshuler, Vollenweider, and Rainer (1971); Youniss (1974); and Sarfaty and Katz (1978) are among the handful of references which appear, and they all deal with urban populations. Kuschel (1973) considers a single deaf man on Rennell Island, in Polynesia, but his concern is primarily the sign language devised by this ingenious man. As far as I am aware, only Woodward (1978) and his associates have an ongoing program for the investigation of deafness in a nonurban society (Washabaugh, Woodward, and DeSantis, 1978). To neglect the way in which other societies handle these problems is to deprive ourselves of a rich source of comparative data. It is also to avoid a strenuous challenge, for the methodology that is appropriate for use in literate, urban societies may have little applicability in a tribal or peasant group. The purpose of this paper, therefore, is to present preliminary data on a group of profoundly, congenitally deaf Maya Indians of southeastern Mexico, with the aim of suggesting hypotheses which may be investigated by future research. The fieldwork upon which the report is based, however, was not part of a purposeful attempt to study the deaf of the village in question; rather, the village was selected as part of the Maya Film Project, directed by Hubert Smith, and at the time the project took to the field the fieldworkers had no idea that the village eventually chosen would contain a high number of deaf inhabitants.

Adolescent↗
PubMed1990

The effects of recoding and presentation format on recency and suffix effects.

The primary linguistic theory of Shand and Klima (1981) hypothesizes that stimuli that cannot be directly processed without recoding are not in the primary linguistic mode of the subject and thus should lead to lesser recency and associated suffix effects. In three experiments, different normal hearing subjects learned to pair American Sign Language (ASL) stimuli, visual "quasivocables" (QVs), word-like letter strings, and auditory QVs with common English words. In the first experiment, the subjects were given sequences of ASL or QV stimuli and required to recall the associated words in strict serial order. In two other experiments involving auditory and visual presentation, respectively, subjects who had never been given paired associate training were required to recall the English words that had previously been associated with the ASL and QV stimuli, in a standard suffix paradigm. The results showed recency and suffix effects to be present only with auditorily presented QVs and words. Contrary to the predictions of the primary linguistic hypothesis, greater recency and larger suffix effects were present with the auditory QVs than with the auditory words, although the QVs were not primary linguistic and the task involved forced recoding. Previous results showing recency with ASL stimuli in normal subjects were not replicated. It is concluded that recency and suffix effects are not related either to the primary linguistic mode of the subject or to stimulus recoding, as we and Shand and Klima have defined them.

Attention↗
PubMed1993

The health status and health care utilization of deaf and hard-of-hearing persons.

OBJECTIVE: To evaluate whether health habits, self-reported health status, and communication with physicians play a role in the known altered health care utilization patterns of deaf and hard-of-hearing persons. DESIGN: A cross-sectional survey. Respondents were given the choice of completing either a self-administered written survey or an American Sign Language interview-administered survey. POPULATION: Eighty-seven deaf and hard-of-hearing members of various organizations serving this population in southeastern Michigan and 88 hearing patients from a family practice clinic in the same area. RESULTS: Deaf and hard-of-hearing persons visit physicians more frequently (P = .01), have a lower incidence of ever smoking tobacco (P < .0006) and of alcohol use (P = .04), have more difficulties communicating with physicians (P < .001), have trouble understanding physicians (P < .001), and feel less comfortable with physicians (P < .001). Lower current tobacco use among deaf and hard-of-hearing persons was only seen in persons who were not educated beyond high school. Increased frequency of physician visits for deaf and hard-of-hearing persons was especially noticeable in the group of persons 60 years of age and older. Our finding that use of interpreters is associated with increased utilization and decreased understanding suggests deaf and hard-of-hearing patients presenting with interpreters warrant more focused attention from physicians. Reasons for seeing physicians did not explain the difference in frequency of physician visits between the two groups. CONCLUSIONS: Deaf and hard-of-hearing persons report a lower subjective health status and higher physician utilization, as well as substantial communication difficulties with physicians. They also report better health-related behaviors, namely less use of tobacco and alcohol. The use of interpreters did not decrease physician utilization or improve the understanding of physicians by these persons. Overall, our results underscore the fact that deaf and hard-of-hearing persons constitute a minority population that experiences considerable difficulties in the patient-physician relationship.

Adult↗