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Updated: Jan 20, 2026

Dichotic Listening: Investigating Selective Auditory Attention
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Factors affecting the Mandarin dichotic digits test.

Xu-Jun Hu1, Chi-Chuen Lau2

  • 1College of Medical Technology, Zhejiang Chinese Medical University , Hangzhou , China.

International Journal of Audiology
|July 16, 2019
PubMed
Summary
This summary is machine-generated.

The Mandarin dichotic digits test (DDT) shows ear advantages differ between right- and left-handed individuals. Longer digit pairs reveal a right-ear advantage for right-handed listeners and a left-ear advantage for left-handed listeners.

Keywords:
Ear advantagedichotic listeninghandednessspeech lateralisationtonal language

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Area of Science:

  • Neuroscience
  • Auditory Perception
  • Psychoacoustics

Background:

  • Limited data exists for the Mandarin dichotic digits test (DDT), with conflicting findings compared to the English DDT.
  • Understanding factors influencing Mandarin DDT performance is crucial for auditory processing research.

Purpose of the Study:

  • To investigate factors affecting performance on the Mandarin dichotic digits test (DDT).
  • To compare ear advantages between right-handed and left-handed native Mandarin speakers.

Main Methods:

  • Dichotic digit pairs were arranged in sets of 2, 3, or 4 digits.
  • Forty-one young, normal-hearing native Mandarin speakers (30 right-handed, 11 left-handed) participated.
  • Test-retest reliability was assessed in six participants.

Main Results:

  • Ceiling effect prevalence decreased with increasing digit-pair length.
  • Right-handed participants showed a right-ear advantage with 3- and 4-digit pairs.
  • Left-handed participants exhibited a reversed pattern, with a left-ear advantage.
  • Significant differences in ear advantage were observed between handedness groups.
  • The Mandarin DDT demonstrated good test-retest reliability.

Conclusions:

  • A right-ear advantage in the Mandarin DDT can emerge with longer digit pairs for right-handed individuals, mirroring English DDT findings.
  • Left-handed individuals may display a left-ear advantage, potentially due to right-hemisphere processing of tonal Mandarin digits.
  • Handedness significantly modulates ear advantages in dichotic listening tasks involving Mandarin digits.