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Eye Tracking During Visually Situated Language Comprehension: Flexibility and Limitations in Uncovering Visual Context Effects

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Published on: November 30, 2018

Contextual effects on number-time interaction.

Aitao Lu¹, Bert Hodges, Jijia Zhang

¹Department of Psychology, South China Normal University, Guangzhou, China.

|July 31, 2009

Summary

Number magnitude influences time perception, but this effect lessens when units like grams are used. This suggests perceived magnitude, not just mathematical value, impacts duration judgments, supporting a generalized magnitude system.

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Area of Science:

Cognitive Psychology
Neuroscience

Background:

Numerical representations are known to influence time perception.
Task-irrelevant number magnitude biases duration judgments, causing underestimation for small numbers and overestimation for large numbers.

Purpose of the Study:

To investigate how contextual units affect the influence of number magnitude on time perception.
To explore the role of perceived magnitude differences versus mathematical differences in duration estimation.

Main Methods:

Participants estimated the duration associated with Arabic numbers.
Units of weight (grams and kilograms) were suffixed to numbers to manipulate perceived magnitude differences.

Main Results:

Suffixing 'gram' reduced the effect of number magnitude on duration estimation.
Suffixing 'kilogram' enhanced the effect of number magnitude on duration estimation.
The impact of number magnitude on time perception is linked to perceived differences in context, not just mathematical value.

Conclusions:

Duration estimation is influenced by how numbers are perceived to differ in magnitude within specific contexts.
Findings support a generalized magnitude system that incorporates action-oriented magnitudes like weight.