“…However, extant empirical research that explores experiential learning based on the learning curve perspective does not seem to directly address the internal processes that consist of learning activities in detail. In fact, the previous studies of learning curves mostly use accumulated production as a proxy variable that can capture the overall effect of experiential learning by assuming that experience is absorbed in the products as a whole (e.g., Argote, Beckman, & Epple, 1990a;Argote & Epple, 1990;Darr et al, 1995;Epple, Argote, & Murphy, 1996;Lapré & Tsikriktsis, 2006;Levin, 2000). Therefore, despite the extensive amount of research, the details of experience that contribute to productivity enhancement are not yet unveiled.…”