“…The results from other SLA studies that have explored input spacing paint an unclear picture as to whether exposure to a second language, whether in instructed or naturalistic settings, should be massed or distributed. We have some evidence that massed (i.e., intensive) input appears superior to distributed input when measured solely on immediate posttests (Collins & White, ; Serrano, ; Serrano & Muñoz, ) Conversely, there is also recent evidence that distributed input is superior to massed input when learning is measured following a delay (Bird, ). More interestingly, as noted above, the one study (Bird, ) that examined massed versus distributed input in light of the optimum ISI‐RI range (e.g., Cepeda et al., ) found strong advantages for distributed conditions, in particular that distributed conditions resulted in more durable learning, a result which is congruent with the larger body of research in this area in cognitive psychology.…”