Some researchers have found results with no connection. A meta-analysis of more than 150 studies comparing the performance of monolinguals and bilinguals on different cognitive tasks found no evidence of a bilingual advantage. Another notable study with a large sample size of 252 Basque-Spanish bilingual children and 252 monolingual Spanish children compared inhibitory skills. Researchers used two Stroop tasks in which the participants had to ignore distracting information to complete the task. They found no differences or bilingual effects between groups.