Abstract:
Abstract: This study aims to determine the possible
relationships among foreign language vocabulary
size, foreign language grammar proficiency, and
critical thinking skills. To this end, 126 adult language
learners were examined in terms of vocabulary
size, grammar proficiency,
and critical thinking skills. The
results revealed that participants’
grammar proficiency levels
and their vocabulary size
scores correlated significantly
with certain aspects of critical
thinking skills. However,
unlike their vocabulary size
scores, grammar proficiency
level scores of the participants
correlated significantly with
their overall critical thinking
skills scores. These results will
be discussed in relation to adult
language learners.