Diadochokinesis Performance and Its Link to Cognitive Control: Alternating Versus Non-Alternating Diadochokinesis
Esther Janse1,2, Chen Shen1,3, Esther de Kerf1
1Centre for Language Studies, Radboud University, Nijmegen, the Netherlands.
Summary
Cognitive control, particularly switching ability, is linked to speech performance. Better executive control enhances accuracy in alternating diadochokinesis (DDK) and slows overall DDK rates for both alternating and non-alternating sequences.
Area of Science:
- Cognitive Neuroscience
- Speech Science
Background:
- Previous research linked cognitive control to speech performance in alternating diadochokinesis (DDK).
- The current study investigates if this association extends to non-alternating DDK sequences.
Purpose of the Study:
- To determine if executive control abilities are more strongly associated with alternating or non-alternating DDK sequences.
- To examine the relationship between cognitive switching, updating, and inhibition with DDK accuracy and rate.
Main Methods:
- Analyzed accuracy and rate performance on non-alternating DDK sequences in 78 young adults.
- Investigated associations between executive control abilities and DDK performance.
Main Results:
- Cognitive switching ability predicted both DDK accuracy and rate.
- The link between cognitive switching/updating and DDK accuracy was specific to alternating sequences.
- Better cognitive switching was associated with slower DDK rates for both sequence types.
Conclusions:
- Executive control enhances maximum speech performance.
- The association between cognitive control and speech performance extends to non-alternating DDK sequences.
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