Finger-counting habits, not finger movements, predict simple arithmetic problem solving

Area of Science:

• Cognitive Science
• Neuroscience
• Psychology

Background:

• Embodied mathematical cognition research indicates differences in arithmetic performance based on the starting hand for counting.
• Finger-specific interference and cultural finger-counting habits may influence these performance differences.

Purpose of the Study:

• To investigate the influence of finger-specific interference on arithmetic performance differences between left and right hand starters.
• To conduct a cross-cultural comparison of embodied effects in mathematical cognition between Canadian and Chinese participants.

Main Methods:

• A single/dual-task paradigm involving verbal arithmetic problems and sequential finger or foot tapping was administered.
• Participants (66 Canadians, 60 Chinese) were assessed on their preferred starting hand for counting.

Main Results:

• Contrary to predictions, specific finger-movement interference patterns were not observed.
• Canadian left starters consistently outperformed right starters across all arithmetic operations.

Conclusions:

• The study validates performance differences between left and right hand starters, supporting theories of individual differences in arithmetic lateralization.
• Embodied cognition effects in mathematics require further independent replication and investigation into individual and cultural variations.