Word retention based on the picture word inductive model (PWIM) among Thai twelfth graders

This study examined the effectiveness of the Picture Word Inductive Model (PWIM) in enhancing vocabulary retention among 40 twelfth-grade students in a bilingual school in Thailand. Participants, aged 16 to 19, were selected based on their English proficiency levels (grades D and C). The study used paper-based multiple-choice vocabulary tests (pretests, immediate posttests, and delayed posttests) to assess vocabulary recognition. Black and white images were used to eliminate color as a factor, and an 'I don't know' option was included for accuracy. The analysis focused on immediate vocabulary acquisition and long-term retention. Paired-samples t-tests compared mean scores across different test stages. The results showed significant immediate vocabulary acquisition following the PWIM intervention, but no statistically significant differences in long-term retention between the immediate and delayed post-test scores.