Quantity processing of Chinese numeral classifiers: Distance and congruity effects

Area of Science:

• Cognitive Science
• Linguistics
• Psychology

Background:

• Chinese grammar requires numeral classifiers (C/Ms) between numerals and nouns.
• A linguistic theory posits C/Ms carry quantity information, acting as multiplicands.
• Previous empirical evidence on C/Ms' mathematical function was limited and inconsistent.

Purpose of the Study:

• To investigate the mathematical function of Chinese sortal and mensural classifiers (C/Ms).
• To determine if C/Ms engage quantity processing akin to numbers.
• To explore the role of C/Ms in magnitude cognition.

Main Methods:

• Utilized the number-size task, where participants compared C/M phrases for quantity or font size.
• Examined for distance and congruity effects, indicative of mental number line processing.
• Analyzed performance based on stimulus proximity and irrelevant dimension influence.

Main Results:

• Participants showed improved accuracy and speed with more distant stimuli, suggesting a mental number line representation for C/Ms.
• Performance was partially affected by irrelevant font size information, indicating cross-dimensional interference.
• Evidence supports that C/Ms are processed in magnitude cognition.

Conclusions:

• Chinese numeral classifiers (C/Ms) are processed on a mental number line, similar to numerical quantities.
• The mathematical values of C/Ms interact with other perceptual dimensions like physical size.
• This study confirms the significant role of C/Ms in magnitude cognition.