Young interpreting trainees’ better adaptation to the flanker conflicting environment: An ERP study

In the intense debate about the potential benefits of bilingual experience to executive functioning (EF), little research addresses the possibility that the benefits may manifest in the process of adapting to an EF task. In this study, we hypothesize that interpreters, confronted frequently with more intense interference from different languages, may adapt to the interference task more efficiently. With the event-related potential (ERP) technique, this study examined whether participants with interpreting experience may adapt to the conflicting environment of a Flanker task more efficiently than non-interpreter bilinguals with the progression of the task (i.e., from the first to the second half trials). Our results showed that the interpreter group showed better conflict resolution (i.e., a lower error rate) despite being less active in early attentional processing (i.e., less negative overall N1 and N2 amplitudes). Second, both groups showed an adaptation effect in the second half trials compared with the first half, as reflected by less negative overall N2 amplitude and more positive overall P3 amplitude. More importantly, only the interpreter group showed an additional benefit in adaptation, as reflected by an earlier overall P3 peak latency in the second half trials. Taken together, the results offered some support for an interpreter advantage in the dynamics of adapting to the Flanker task, which could provide new insight into the effect of bilingual experience on non-verbal interference control.