This article presents a work-in-progress focused on developing an experiment to investigate the effectiveness of different types of deliberate paired-associate computer-assisted language learning (CALL). First, the rationale for Japanese EFL learners' current need for doubling their efforts with this technique is explained. Next, an overview of research regarding the interface in second language acquisition is presented. This is followed by an explanation of results from a recent experiment. Questions and issues raised in that experiment are then discussed with regard to a proposal for a subsequent experiment that will be conducted during the semester starting in April 2020. In this proposed study, different conditions within Internet-based flashcard study will be the major experimental learning component. Psycholinguistic response time measures will be the main dependent variable, aimed at gauging gains in nondeclarative, or tacit L2 knowledge. In addition, online declarative measures and traditional offline measures of declarative knowledge will be used.