The Effects of Learners’ Brain Hemisphericity on their Degree of Vocabulary Retention: A Case Study of Iranian High School Students

AbstractThis research investigates the effects of students’ brain dominance on the degree of their vocabulary retention. Forty five pre-intermediate students were randomly chosen through convenience sampling (15 right-brained, 15 left-brained, 15 both-brained). Participants were given 15 vocabularies to memorize for each session and this process continued for 4 sessions. To do this research, researchers made use of not only the Oxford placement test (2007), brain dominance inventory, some targeted vocabularies, but also vocabulary achievement tests as post-tests. By the Analysis of data it can be concluded that whole-brained learners had an advantage over left/right ones in vocabulary memorization