“…If the suppression of motor responding has no detrimental effect, this would show that the motor component is not necessary. This question has been tackled in the implicit learning literature (e.g., Cohen, Ivry, & Keele, 1990;Howard, Mutter, & Howard, 1992;Nattkemper & Prinz, 1997;Rüsseler & Rösler, 2000;Stadler, 1989;Willingham, 1999;Willingham, Nissen, & Bullemer, 1989;Ziessler, 1994), and contradictory results have been reported. One way to reconcile these results might be to consider the possibility that positive evidence of observational learning actually consists of cases in which learning is not really implicit.…”