CHALIT CHIARAKIAT (CHULALONGKORN UNIVERSITY)
NATTAMA PONGPAIROJ (Chulalongkorn University)

THE ROLE OF INPUT FREQUENCY ON THE ACQUISITION OF ENGLISH ADJECTIVAL SUFFIXES BY L1 THAI LEARNERS : LANGUAGE AWARENESS, LITERATURE & TRANSLATION

This study investigated how input frequency influenced the acquisition of English adjectival suffixes by L1 Thai learners. Based on the usage-based theory (Ellis and Collins, 2009), the study aimed to find out whether type frequency, or token frequency, would affect the perception of such suffixes more. A Grammaticality Judgement Test was administered to 30 intermediate L1 Thai undergraduate students. The correct judgement rates according to the four variables — (1) high type and high token frequency, (2) high type and low token frequency, (3) low type and high token frequency, and (4) low type and low token frequency — were 88.33%, 47.5%, 70.83%, and 48.33%, respectively. This result showed that input frequency had an effect on the acquisition. However, token frequency had a more significant role in the perception, i.e. variable (1) and (3), possibly because the L1 Thai learners were exposed more to affixed adjectives than the suffixes alone.

Chalit Chiarakiat MA student English as an International program Chulalongkorn University

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