Negation and Free Choice Inference in Child Mandarin

Area of Science:

• Linguistics
• Psycholinguistics
• Semantics

Background:

• Free Choice Inferences (FCIs) are typically canceled in sentences with internal negation.
• Previous research indicated Mandarin speakers license FCIs in affirmative sentences with modals and disjunction.
• The distinction between internal and external negation's effect on FCIs remains underexplored.

Purpose of the Study:

• To investigate whether FCIs are negated or canceled by external negation.
• To contrast the processing of internal versus external negation in Mandarin.
• To examine developmental differences in FCI licensing under different negation types.

Main Methods:

• Four experiments utilizing the Truth Value Judgment Task (TVJT).
• Testing Mandarin-speaking children and adults on sentences with internal and external negation.
• Comparison with English-speaking adults to confirm cross-linguistic patterns.

Main Results:

• Internal negation canceled FCIs in Mandarin speakers, with children showing a 'neither' interpretation and adults a 'not both' interpretation.
• External negation, conveyed by 'only', led to both children and adults interpreting it as negating FCIs, not canceling them.
• External negation eliminated previously observed between-group differences, suggesting a unified interpretation.

Conclusions:

• Supports a distinction between internal and external negation in linguistic theory.
• External negation actively negates FCIs, while internal negation cancels them.
• Developmental findings suggest a consistent understanding of external negation's scope over FCIs.