In 2011, Wu and Thierry conducted a study where Chinese-English bilinguals were shown picture pairs. Participants were asked to name the second picture in the pair when it was shown and then were asked to judge whether the word pairs corresponding to the pictured objects rhymed or not. Word pairs were designed so that they either rhymed in both L1 and L2 or only in one of the two languages. Electrophysiological measures (see Event-related potential) of the effect (priming) of the sound repetition induced by the rhyming of the word pairs showed that even though the participants were performing the task in their L2, they showed a priming effect (albeit delayed) when those L2 words rhymed with words in the L1. This suggests that in regards to language use, both L1 and L2 are accessed and compete for selection during L2 production.