One of the core issues discussed with regard to the acquisition of Japanese transitive and
intransitive verbs by second language learners is how they memorize them successfully withoutany confusion. This study evaluates the effect of using color-coded verb cards on memorizing transitive and intransitive verbs. The variable used in this study was color coding. One group of learners memorized transitive and intransitive verbs using color-coded verb cards, and the other group memorized them using non-color-coded verb cards. The effect was measured using a verb judgment test that assessed if the learners were able to identify if the verbs were transitive or intransitive. A pretest and posttest were administered. The posttest did not show a significant difference between the two methods of learning. However, for some learners who needed to remember many transitive and intransitive verbs during the practice session, the color coding helped improve their performance, but for the others, the color coding was a hindrance. The difference may have been caused by the learners’ preference of colors for ransitive and intransitive verbs.