A systematic review and meta-analysis of dichotic deficits in individuals with learning disability

Hari Prakash Palaniswamy, Gopika Nair, Mayur Bhat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Classic dichotic listening test using speech stimuli results in right ear advantage, due to the dominant crossed pathway for speech and language. However, such a conclusion cannot be derived for children with learning disability (LD) because of these variabilities among studies. Hence the study aimed at integrating the findings from various studies and synthesize evidence for the association between dichotic listening and hemispheric asymmetry in individuals with LD. All necessary key terms for ‘Learning disability’ and ‘dichotic listening’ were identified and used in combination with appropriate Booleans to obtain articles of interest. The initial search resulted in 3643 articles out of which 50 studies were selected for data extraction. The Right Ear Advantage (REA) is preserved in individuals with LD for the dichotic free recall test. However, in this condition, the right ear scores were significantly poor compared to controls. In the directed attention condition, the individuals with LD showed difficulty in right attended conditions whereas no deficit is observed in left attended conditions. Overall evidences indicated that individuals with LD showed poorer performance in both free and forced recall irrespective of dichotic material used indicating both top-down and bottom-up processing deficits.

Original languageEnglish
Pages (from-to)263-282
Number of pages20
JournalSpeech, Language and Hearing
Volume27
Issue number4
DOIs
Publication statusPublished - 2024

All Science Journal Classification (ASJC) codes

  • Otorhinolaryngology
  • Linguistics and Language
  • Speech and Hearing

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