No more problems in Coltheart's neighborhood: resolving neighborhood conflicts in the lexical decision task

In the area of visual word recognition, there is considerable disagreement as to whether neighborhood effects for words in the lexical decision task are facilitatory or inhibitory: While they seem to be mostly facilitatory in English, they tend to be absent or inhibitory in French or Spanish. The present study investigated the possibility that the facilitatory neighborhood effect obtained in English is due to the fact that most neighbors in English are body neighbors (i.e. they share the same orthographic rime). Our results showed that when words were matched for orthographic neighborhood (N), the effects of body neighbors (BN) were facilitatory (i.e. shorter reaction times for words with many body neighbors than for words with few body neighbors). In contrast, when words are matched for BN, the effects of N are unreliable with a tendency towards inhibition. In conclusion, it appears that research conducted in English has always found neighborhood effects to be facilitatory because of the dominant role of body neighbors in English. In contrast, neighborhood effects in French and Spanish may have been more ambiguous because these languages either do not confound N and BN, or they do not require a greater sensitivity to the body/rime unit.