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Biomedical subjects

W O Haynes

Publications and source records attributed to W O Haynes.

18 recordsLinked to original sources
PubMed1994

Joint book-reading strategies in working-class African American and white mother-toddler dyads.

Twenty working-class mother-toddler dyads were videorecorded during three joint book-reading activities. Ten of the dyads were white, and 10 were African American, balanced for parent educational level, family income, and parental occupation. The children ranged in age from 18 to 30 months and were normally developing. The parents read an experimental book to their child two times and a favorite book they brought from home one time. Videotapes of the joint book-readings were analyzed to determine cultural differences and the effects of book familiarity on the occurrence of maternal and child communication behaviors. The results show many similarities between the cultural groups in joint book-reading behaviors. However, statistical analyses revealed a significant difference between the cultural groups in the use of questions. African American mothers used significantly fewer questioning behaviors compared to the white mothers. White children produced more question-related communications, and African American children produced more spontaneous verbalizations. Several effects of familiarity were also found. The findings are compared to anthropological reports on caretaker-child interaction in African American families and implications are discussed.

Black or African American↗
PubMed1988

Topic manipulation and conversational participation as a function of familiarity in school-age language-impaired and normal language peers.

This study investigated the topic manipulation skills and conversational participation of school-age language-impaired children (LI) in interactions with normal language peers. The subjects consisted of eight dyads of a normal language child and a language-impaired child balanced for approximate age and sex. They ranged in age from 5.11 to 7.11 years of age. The subjects participated in two conversations in order to explore the effects of familiarity on conversational participation. The subjects were unfamiliar with each other before the study began. Fifteen to twenty minutes of discourse were taped, transcribed, and analyzed for the number and proportion of topics maintained, topics introduced, topics reintroduced, topics shaded, and the number and proportion of back channel responses produced in Session 1 and Session 2. A behavioral measure was included to clarify whether conversational nonassertiveness was related to a behavioral style of interaction. No significant differences were found between the LI children and the normal children for the number and proportion of topics maintained, topics introduced, or topics shaded. However, the LI subjects did produce significantly more topic reintroductions than the normal subjects. The number and proportion of back channel responses was not found to differ significantly between the two groups. A familiarity effect was demonstrated by a reduction in the number of utterances produced in Session 2 as compared to Session 1 as the children interacted less in the second conversation. Several interpretations of the results are discussed.

Child↗
PubMed1984

Linguistic processing and performance in articulation-disordered subgroups of language-impaired children.

The linguistic and dichotic listening performances of three groups of nine children were studied. The groups were divided as follows: (1) Language-disordered children whose articulatory errors were primarily omissions; (2) language-disordered children whose articulatory errors were primarily substitutions; (3) communicatively normal children. All subjects participated in articulation testing, imitative language tests, analysis of a spontaneous language sample, and a dichotic word task. The articulatory omission group differed significantly from the substitution group on the imitative language test but not on the developmental sentence analysis. All groups demonstrated a right ear advantage, suggesting left hemispheric processing of the dichotic stimuli. The results of the present study and prior research are discussed in terms of possible sources of variability.

Child↗
PubMed1983

Linguistic processing and reaction time differences in stutterers and nonstutterers.

Linguistic processing by the left and right cerebral hemispheres was investigated in 10 adult male stutters and 10 matched nonstutterers. Subjects performed a lexical decision task in which nonword and real-word stimuli were presented tachistoscopically to the right and left visual hemifields. Vocal and manual reaction times to real words were measured to assess hemispheric participation in processing linguistic information and to determine differences between response modes. The stuttering group exhibited a left visual field efficiency or right hemisphere preference for this task and were slower in both vocal and manual reaction times. Ramifications for hemispheric processing theories and laryngeal dysfunction hypotheses are discussed.

Adolescent↗
PubMed1982

The effects of phonetic context and linguistic complexity on /s/ misarticulation in children.

The present investigation was designed to examine the effects of phonetic context and linguistic complexity level on /s/ misarticulations in children. The subjects were normal children who misarticulated the /s/ phoneme interdentally in all positions of words. The stimuli were 48 sound-in-context initiative sequences which contained one /s/ phoneme embedded in a C1SC2 frame with all permutations of the phonemes /k,t,n,p/ in the C1 and C2 positions. The 48 sequences were composed of two basic linguistic complexity levels. The simple level consisted of the C1SC2 frame occurring in 16 noun phrases and in the more complex linguistic level seven-word sentences contained the C1SC2 frames in the subject-noun-phrase and object-noun-phrase positions. All presentations of complexity levels were counterbalanced over the three trials for a total of 144 /s/ productions for each child. Results demonstrated that certain phonemes were more facilitory for correct /s/ production than other phonemes. The analysis revealed no position effect. The mean percent correct /s/ productions over three trials did not differ significantly; however, the mean percent correct /s/ productions did vary significantly with linguistic complexity levels by position.

Articulation Disorders↗
PubMed1981

Sentence imagery and recall: an electroencephalographic evaluation of hemispheric processing in males and females.

Hemispheric alpha asymmetries were obtained for males and females during the presentation of sentences comprised of high imagery and low imagery words. The subject's task was to later recall lexical items for each imagery group. The subjects were also administered a modified version of Paivio's (1971) Individual Differences Questionnaire (IDQ). The results indicated that females appeared to process both sentence types left hemispherically while males used the right hemisphere for these stimuli. No difference in processing was found for the two imagery conditions. Females scored higher than males on both subtests of the IDQ and tended to recall more items from both imagery conditions. The results are discussed in terms of stimulus and task variables which may affect hemispheric processing.

Adult↗
PubMed1981

Recognition and recall: an electroencephalographic investigation of hemispheric alpha asymmetries for males and females on perceptual and retrieval tasks.

Hemisphere alpha asymmetries of males and females were obtained during the presentation of connected verbal material under instructions of recall or recognition and during the retrieval tasks requiring recall or recognition which were compared to a "vigilance" condition. Significantly more left hemispheric participation was found for the retrieval/recognition tasks than for the perceptual, listening tasks. The notion that brain mechanisms involved in information storage or retrieval for recall and recognition tasks are different was not supported. Asymmetries between the males and females did not differ.

Adolescent↗
PubMed1980

A comparision of nonimitative modeling and mimicry procedures for training the singular copula in black preschool children.

The singular form of the copula was trained in 10 normal four-yr-old Black dialect speakers using two different techniques. One group was trained using mimicry and the other was trained using nonimitative modeling. Multiple naive trainers and picture stimuli were counterbalanced across subjects. The results indicated that the two training methods did not differ significantly in baseline/generalization responses. Implications of this and similar studies are discussed.

Black or African American↗
PubMed1980

Task effect and EEG alpha asymmetry: an analysis of linguistic processing in two response modes.

EEG alpha asymmetry was monitored while subjects listened to two sets of identical stimulus sentences in two tasks. One task was immediate verbal imitation of the stimulus sentence and the other task was modeling and involved the subjects constructing some novel sentences after all stimulus sentences were heard. The results demonstrated that the left hemisphere was significantly more activated while subjects listened to sentences that were to be immediately imitated. These findings suggest that tasks involving remediate verbal reports of stimuli may activate the left hemisphere for motor programming purposes and possibly effect alpha asymmetry. Studies attempting to investigate stimulus effects of hemispheric processing should consider the possibility that tasks involving motoric programming may interact with the stimuli and produce different asymmetry patterns.

Adult↗
PubMed1980

Alpha hemispheric asymmetry and stuttering: some support for a segmentation dysfunction hypothesis.

The alpha hemispheric asymmetries of normal-speaking males, normal-speaking females and male stutterers were examined with electroencephalographic (EEG) techniques during exposure to connected speech and connected nonlinguistic stimuli. The subject selection was controlled for familial right handedness. The stutterers showed significantly less alpha in their right hemispheres for both verbal and nonverbal tasks. The findings are discussed in terms of possible variables affecting hemispheric processing in normal males, females, and stutterers. The hypothesis that stuttering may be a linguistic segmentation dysfunction is presented.

Acoustic Stimulation↗
PubMed1979

Pragmatics and elicited imitation: children's performance on discursively related and discursively unrelated sentences.

Two experiments were conducted to determine the elicited imitation performance of preschool children when the stimulus sentences were meaningfully related to each other in a story as compared to when the sentences were arranged in a random order. Experiment 1 used a repeated-measures design and found a practice effect demonstrating less errors during the second trial regardless of experimental condition. Experiment 2 implemented a group design with one group imitating the related (story) sentences and the other imitating the randomly arranged sentences. The results showed no significant difference in the mean number of errors occurring in the "story" versus the "random" condition. The implications of the practice effect found in Experiment 1 are discussed and the error pattern during the second trial is evaluated. The efficacy of using discursively related as opposed to unrelated sentences in elicited imitation tasks is discussed from a pragmatic point of view.

Child Language↗
PubMed1978

Disfluency changes in children as a function of the systematic modification of linguistic complexity.

This investigation determined the influence of modeling on the complexity of language in 5-year-old youngsters, and the effect of simple and complex language usage on the occurrence and topography of disfluency. Forty children balanced for age, sex, and educational level served as subjects, and a repeated measures design was implemented to examine changes in linguistic complexity and disfluency between "simple" and "complex" language modeling conditions. The investigation demonstrated a significant modeling effect and suggested a significant relationship between linguistic complexity and disfluency in children. The results are discussed in terms of grammatical load and its possible effect on speech interruption.

Child Language↗
PubMed1978

A study of clients' perceptions of therapeutic effectiveness.

A factor-analytic investigation was conducted to determine how adult communication-disordered clients perceive variables that speech-language pathologists feel are important to effective management. One hundred sixty-two subjects representing a relatively balanced distribution of sex, age, and disorder group responded to the study from private, hospital, and university speech clinics. The results indicated that clinician demographic characteristics contribute least to clients' perceptions of therapeutic effectiveness while technical and interpersonal skills are the more essential ingredients of clinical management. Similarities between clients', clinicians', and supervisors' perceptions are considered and implications are discussed.

Adolescent↗
PubMedDate not supplied

Differentiating dialect from disorder: a comparison of two processing tasks and a standardized language test.

UNLABELLED: Previous research has indicated that norm-referenced language assessment protocols are often biased against dialectal speakers. Recently, the use of processing tasks has emerged as one possible means of reducing this bias in language testing. Processing tasks measure a child's ability to process and manipulate language rather than tap previous linguistic knowledge. The present study utilized 40 subjects between the ages of 7;0 and 7;3 in the following equal groupings: White normal language, White language impaired, African American normal language, African American language impaired. The subjects were administered the Test of Language Development-2P (TOLD-2P), the Nonword Repetition Task (NRT), and the Competing Language Processing Task (CLPT). Results indicated that all three measures differentiated normal-language and language-impaired subjects from one another. With regard to cultural group, confirmed speakers of African American English (AAE) with normal language scored significantly lower on the TOLD-2P compared to White normal-language subjects. Scores of the AAE-speaking subjects with normal language on the NRT and CLPT, however, did not differ significantly from the White normal-language subjects. These results suggest that AAE speakers with normally developing language (LN) may be at a disadvantage on tests of prior language knowledge and that processing tasks may be a useful tool in combination with other assessment measures to make less biased clinical decisions. EDUCATIONAL OBJECTIVES: As a result of this activity, the reader will (1) be able to determine the utility of processing tasks in culturally unbiased language assessment. (2) The reader will be able to discriminate the difference between the results of a standardized language test and processing tasks on speakers of AAE.

Child↗
PubMedDate not supplied

Alpha hemispheric asymmetry in children with learning disabilities and normally achieving children during story comprehension and rehearsal prior to narrative production.

Twelve children with learning disabilities attending a remedial summer clinic were compared with 12 normally achieving controls balanced for age, sex, and handedness on alpha amplitude and production of narratives. Specifically, all subjects participated in three conditions. Condition 1 was a vigilance condition, Condition 2 involved listening to a story without an ending that had to be retold, and Condition 3 was an opportunity to rehearse the story mentally and construct an appropriate ending. Alpha amplitudes were monitored during the three conditions to determine any hemispheric asymmetry or differences between groups or conditions in alpha production. The subjects' narrative productions of retelling the story with a novel ending were also analyzed using a cohesion analysis procedure. The results showed no significant differences between the groups in alpha amplitude, but there was a significant task effect with the vigilance condition, story comprehension, and rehearsal showing decreasing alpha amplitudes in both groups of subjects. Analysis of the narratives showed the group with learning disabilities to produce significantly shorter and less cohesive stories. Results are discussed in relation to other studies of hemispheric processing differences in populations with learning disabilities.

Alpha Rhythm↗