Lateralization of Bilingual Digit Span Functions

1984 ◽  
Vol 58 (1) ◽  
pp. 21-22 ◽  
Author(s):  
Rumjahn Hoosain
Keyword(s):  
Digit Span ◽  
English Bilingual ◽  
Listening Tests ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
Chinese And English

36 Chinese-English bilingual undergraduates were tested on forward and backward digit spans in both Chinese and English in monaural listening tests. There was a significant right-ear advantage for forward digit span in Chinese but not in English, suggesting different hemispheric involvement.

Relationship of Ear Specialization to Degree of Task Difficulty, Sex, and Lateral Preference

1982 ◽  
Vol 54 (3) ◽  
pp. 703-714 ◽  
Author(s):  
R. Harter Kraft
Keyword(s):  
Task Difficulty ◽  
Age Groups ◽  
Environmental Sound ◽  
Lateral Preference ◽  
Verbal Stimuli ◽  
Listening Tests ◽  
Ear Advantage ◽  
Increase In Accuracy ◽  
Right Ear Advantage ◽  
The Right

Children in Grades 2 and 6 nested in age, sex, and lateral-preference groups were administered two dichotic listening tests (digit and environmental sound). There was a right-ear advantage for verbal stimuli which did not increase with age, supporting the invariance models of the development of verbal laterality past 5 to 6 years of age. The percentage of left-ear accuracy for verbal stimuli relative to the right ear decreased with task difficulty. Girls were more accurate than boys when recalling verbal stimuli and the older boys were more accurate than the other children when identifying environmental sounds. In recalling nonverbal stimuli, boys showed a left-ear advantage and out-performed girls, who showed a right-ear advantage. The sex difference in ear advantage increased with task difficulty. There was an over-all increase in accuracy with age when identifying both verbal and nonverbal stimuli with the exception of the ambidextrous children, who demonstrated low accuracy scores for the environmental sound stimuli across age groups.

Replication of a premenstrual decrease in right-ear advantage on language-related dichotic listening tests of cerebral laterality

2002 ◽  
Vol 40 (8) ◽  
pp. 1293-1299 ◽  
Author(s):  
Gerianne M Alexander ◽  
Margaret Altemus ◽  
Bradley S Peterson ◽  
Bruce E Wexler
Keyword(s):  
Dichotic Listening ◽  
Cerebral Laterality ◽  
Listening Tests ◽  
Ear Advantage ◽  
Right Ear Advantage

scholarly journals “The Dichotic Digit Test” as an Index Indicator for Hearing Problem in Dementia: Systematic Review and Meta-Analysis

2020 ◽  
Author(s):  
Nattawan Utoomprurkporn ◽  
Chris J.D. Hardy ◽  
Joshua Stott ◽  
Sergi G. Costafreda ◽  
Jason Warren ◽  
...  
Keyword(s):  
Systematic Review ◽  
Cognitive Impairment ◽  
Speech Processing ◽  
Test Performance ◽  
Meta Analysis ◽  
Control Group ◽  
People With Dementia ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
Dementia Onset

Abstract Background Patients with dementia commonly have problems processing speech in the presence of competing background speech or noise. This difficulty can be present from the very early stages of dementia, and may be a preclinical feature of Alzheimer's disease. Purpose This study investigates whether people with dementia perform worse on the dichotic digit test (DDT), an experimental probe of speech processing in the presence of competing speech, and whether test performance may predict dementia onset. Research Design Systematic review and meta-analysis. Data Collection and Analysis A literature search was conducted in Medline, Embase, Scopus, and Psycinfo. We included (1) studies that included people with a diagnosis of dementia and a healthy control group with no cognitive impairment; (2) studies that reported results from a DDT in a free-recall response task; and (3) studies that had the dichotic digit mean correct percentage score or right-ear advantage, as outcome measurements. Results People with dementia had a lower DDT total score, with a pooled mean difference of 18.6% (95% confidence interval [CI]: 21.2–15.9). Patients with dementia had an increased right-ear advantage relative to controls with a pooled difference of 24.4% (95% CI: 21.8–27.0). Conclusion The DDT total scores are lower and the right-ear advantage increased in cognitively impaired versus normal control participants. The findings also suggest that the reduction of dichotic digit total score and increase of right-ear advantage progress as cognitive impairment increases. Whether abnormalities in dichotic digit scores could predict subsequent dementia onset should be examined in further longitudinal studies.

scholarly journals Dichotic words listening test: technical aspects and results in normal right-handed individuals

1994 ◽  
Vol 52 (2) ◽  
pp. 204-209 ◽  
Author(s):  
Ana Regina Caner-Cukiert ◽  
Arthur Cukiert
Keyword(s):  
Cerebral Dominance ◽  
Listening Test ◽  
Left Handed ◽  
Listening Tests ◽  
Msec Interval ◽  
Normal Individuals ◽  
Hemisphere Dominance ◽  
Four Blocks ◽  
Right Ear Advantage ◽  
The Right

Dichotic listening tests have been being used in an increasing frequency to determine in a non-invasive way the cerebral dominance in right- and left-handed patients. This is especially relevant when surgery in eloquent brain areas is being contemplated. A Portuguese version of the dichotic words listening test was developed based mainly on Wexler's protocol. It consisted of 15 pairs of words with a stimulus dominance lower than 50%. They were recorded using natural voice and time and intensity synchronization by means of a specialized software. Each pair of words was presented twice in different channels within each block. The items were randomized and presented with a 300 msec interval between each trial. Four blocks of 30 pairs of words each were created, totalizing 120 trials. In the scoring process, the words heard over the right and left ears were wrote down. The number of times each word was heard over each ear was computed and their values subtracted yielding a partial score for each specific word pair. This process was repeated for all stimuli pair and a final score for right and left predominance was then reached. Thirty-two right handed normal individuals underwent the test 93.8% showed a right ear advantage. These results are very similar to the actual left hemisphere dominance rate in a right-handed population.

scholarly journals The Roots of Bilingualism in Newborns

2020 ◽  
Author(s):  
Krista Byers-Heinlein ◽  
Tracey C. Burns ◽  
Janet F. Werker
Keyword(s):  
Language Acquisition ◽  
Learning Mechanisms ◽  
English Bilingual ◽  
Chinese And English ◽  
Intermediate Pattern ◽  
English Monolingual

The first steps toward bilingual language acquisition have already begun at birth. When tested on their preference for English versus Tagalog, newborns whose mothers spoke only English during pregnancy showed a robust preference for English. In contrast, newborns whose mothers spoke both English and Tagalog regularly during pregnancy showed equal preference for both languages. A group of newborns whose mothers had spoken both Chinese and English showed an intermediate pattern of preference for Tagalog over English. Preference for two languages does not suggest confusion between them, however. Study 2 showed that both English monolingual newborns and Tagalog-English bilingual newborns could discriminate English from Tagalog. The same perceptual and learning mechanisms that support acquisition in a monolingual environment thus also naturally support bilingual acquisition.

Planum temporale asymmetry and ear advantage in dichotic listening in developmental dyslexia and Attention-Deficit/Hyperactivity Disorder (ADHD)

2002 ◽  
Vol 8 (1) ◽  
pp. 22-36 ◽  
Author(s):  
LORI M. FOSTER ◽  
GEORGE W. HYND ◽  
ALLISON E. MORGAN ◽  
KENNETH HUGDAHL
Keyword(s):  
Attention Deficit Hyperactivity Disorder ◽  
Normal Control ◽  
Developmental Dyslexia ◽  
Attention Deficit ◽  
Dichotic Listening ◽  
Planum Temporale ◽  
Hyperactivity Disorder ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
Auditory Association Cortex

The planum temporale is clearly involved in language processing, for it serves as the auditory association cortex. Research has consistently demonstrated that 60 to 70% of the population has leftward asymmetry of the planum temporale. Research has also suggested that dyslexic individuals tend to have either rightward asymmetry or symmetrical plana. Moreover, many studies have found a relationship between the presence of dyslexia and/or language impairment and deficits in the normal right ear advantage found in dichotic listening paradigms. In this context, this study examined the relationship between planum temporale asymmetry and ear preference in dichotic listening performance in children with Developmental Dyslexia and Attention-Deficit/Hyperactivity Disorder (ADHD). Subjects included 19 children with dyslexia (10 of whom had a comorbid diagnosis of ADHD), 23 children with ADHD, and 12 diagnosed normal control children. Dichotic listening data were not collected for 8 of the 12 normal control children and for 3 of the 23 ADHD children. Results revealed no significant difference between ADHD and dyslexic subjects in regard to ear advantage on the free recall dichotic listening task. In addition, although the directed dichotic listening tasks were not related to degree of planum asymmetry, as predicted, results indicated that subjects who consistently displayed an atypical left ear advantage tended to have larger right bank lengths than those who consistently displayed a typical right ear advantage. These findings support the notion that some individuals with dyslexia or language deficits tend to have a larger right planum temporale and that performance on dichotic listening tasks may reflect this relatively unusual pattern. (JINS, 2002, 8, 22–36.)

Auditory semantic priming and the dichotic right ear advantage

2019 ◽  
Vol 135 ◽  
pp. 103575
Author(s):  
Daniel Voyer ◽  
Natalie Hearn
Keyword(s):  
Semantic Priming ◽  
Ear Advantage ◽  
Right Ear Advantage

Phonological and visual similarity effects in Chinese and English language users: Implications for the use of cognitive resources in short-term memory

2010 ◽  
Vol 13 (4) ◽  
pp. 499-512 ◽  
Author(s):  
RACHEL L. COLE ◽  
SUSAN J. PICKERING
Keyword(s):  
Visual Memory ◽  
English Language ◽  
Short Term Memory ◽  
Digit Span ◽  
Visual Similarity ◽  
Cognitive Resources ◽  
Articulation Rate ◽  
Short Term ◽  
Term Memory ◽  
Chinese And English

This study investigated the encoding strategies employed by Chinese and English language users when recalling sequences of pictured objects. The working memory performance of native English participants (n = 14) and Chinese speakers of English as a second language (Chinese ESL; n = 14) was compared using serial recall of visually-presented pictures of familiar objects with three conditions: (i) phonologically and visually distinct, (ii) phonologically similar and visually distinct, and (iii) phonologically distinct and visually similar. Digit span, visual pattern span and articulation rate were also measured. Results indicated that whilst English participants were affected by the phonological but not the visual similarity of items, the performance of Chinese ESL participants was comparable across all three conditions. No significant differences in digit span, visual memory or articulation rate were found between groups. These results are discussed in the light of our understanding of the use of cognitive resources in short-term memory in users of diverse orthographies.

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