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Published on: December 7, 2018
Implicit and Explicit Number-Space Associations Differentially Relate to Interference Control in Young Adults With
Carrie Georges1, Danielle Hoffmann2, Christine Schiltz1
1Institute of Cognitive Science and Assessment, Research Unit Education, Culture, Cognition and Society, Faculty of Language and Literature, Humanities, Arts and Education, University of Luxembourg, Luxembourg, Luxembourg.
The spatial-numerical association of response codes (SNARC) effect varies with task type and interference control. Different executive functions influence number-space associations in implicit versus explicit tasks.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Human Behavior
Background:
- The spatial-numerical association of response codes (SNARC) effect links numerical and spatial representations.
- SNARC effect variability is influenced by task type and interference control, particularly in older adults.
- Investigating this link in young adults with ADHD can clarify executive function's role.
Purpose of the Study:
- To examine the relationship between the SNARC effect and interference control (Stroop and Flanker tasks) in young adults with ADHD.
- To determine if task-specific mechanisms underlie number-space associations.
- To understand how executive control influences SNARC effect variability.
Main Methods:
- Assessed the SNARC effect using parity judgments (implicit) and magnitude classifications (explicit) in 26 young adults with ADHD.
- Measured interference control using Stroop and Flanker tasks.
- Analyzed correlations between SNARC effect strength and performance on interference tasks.
Main Results:
- Number-space associations in implicit tasks correlated with weaker Stroop interference control.
- Number-space associations in explicit tasks correlated with better Flanker interference control.
- These divergent patterns suggest distinct interference control mechanisms for implicit and explicit number-space associations.
Conclusions:
- Interference control significantly contributes to number-space associations in young adults.
- Magnitude-associated spatial codes can interfere with parity judgments but aid explicit magnitude classifications.
- Task-specific executive control mechanisms modulate number-space associations, explaining intra-individual differences.
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