Time course of repetition effect in reconition of Hebb digit series

Abstract

We investigated a repetition and lag effect on the recognition of Hebb digit series. These digit series were constructed by the nine randomly arranged numbers. Participants learned one digit at a time for short duration and after learning they decided whether a probe matched to a part of the series. Several digit series were repeated seven times with one of three lags (1,4,or6) in total 130 trials. Results showed that the performance raised with increasing repetition when the lag was short. We will discuss a relation between the repetition effect and learning time.