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<p>Orthographic neighbourhood size (N) effects differ under lateralized presentation. Evidence suggests a facilitatory effect of N in the right hemisphere. However, the effect of N in the left hemisphere remains controversial: it may have a weaker facilitative role or it may even be inhibitory. In a pre-registered online experiment, we aimed to replicate the interaction between N and visual field and provide support for an inhibitory effect of N in the left hemisphere. We subsequently conducted a pre-registered systematic review and meta-analysis to synthesise the available evidence and determine the direction of N effects across hemispheres. Based on the evidence, it would seem the effect is inhibitory in the left hemisphere. Furthermore, the size of the N effect is considerably smaller in the left hemisphere. Both studies revealed vast heterogeneity between participants and studies, and we consider the implications of this for future work.</p>

Original publication

DOI

10.31234/osf.io/paxh4

Type

Journal article

Publisher

Center for Open Science

Publication Date

08/09/2020