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Cognitive control in number processing: evidence from the unit-decade compatibility effect.

Pedro Macizo¹, Amparo Herrera

¹Dpto. Psicología Experimental, Universidad de Granada, Spain. pmacizo@ugr.es

Acta Psychologica

|November 17, 2010

Summary

This summary is machine-generated.

This study shows that how we process Spanish number words depends on the task. Adjusting the proportion of number comparison types changed the compatibility effect, influencing unit relevance in number processing.

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Area of Science:

Cognitive Psychology
Numerical Cognition
Experimental Psychology

Background:

The reverse compatibility effect occurs when comparing two-digit number words.
This effect might be influenced by the proportion of different trial types.

Purpose of the Study:

To investigate if the reverse compatibility effect in Spanish number words is modulated by filler trial percentage.
To determine how unit relevance in number word processing can be manipulated.

Main Methods:

Participants performed a comparison task using two-digit Spanish number words.
The ratio of within-decade to between-decade comparison trials was manipulated (20%, 50%, 70%).
Unit-decade compatibility in between-decade trials was varied.

Main Results:

The compatibility effect shifted from reverse to regular based on unit relevance.
Increased emphasis on unit processing altered the compatibility effect.
Stimulus list composition modulated the relative emphasis on unit processing.

Conclusions:

The relative emphasis on unit processing in two-digit number words is malleable.
Cognitive control mechanisms play a role in number processing and compatibility effects.
Findings contribute to understanding numerical cognition and attention modulation.