bilinguals with a high vocabulary score. Also, monolinguals performed better than bilinguals on verbal fluency in the study. If the vocabulary abilities were made to be more comparable, however, many of the differences would disappear, indicating that vocabulary size may be a factor that moderated a person's performance in verbal fluency and naming tasks. The same study also found that bilinguals, in a version of the letter fluency task that placed more demand on executive control, performed better than monolinguals. Thus, once vocabulary abilities were controlled, bilinguals performed better on letter fluency possibilities by the enhanced frontal executive processes in the brain. It is important to note here that bilinguals' overall vocabulary size in both languages combined was equivalent to monolinguals' in one language. While monolinguals may excel in vocabulary size for the one language they speak, their vocabulary content is not greater [clarification needed]. Bilinguals may have smaller vocabularies in each individual language, but when their vocabularies were combined, the content size was approximately similar to that of the monolingual. Monolingual children demonstrated larger vocabulary scored than their bilingual peers, but bilingual children's vocabulary scores still increased with age, just like the monolingual children's vocabulary scores (Core et al., 2011). Despite a variation in vocabulary scores, there was absolutely no difference between monolingual and bilingual children in terms of total vocabulary size and total vocabulary gains (Core et al., 2011). Bilingual children and monolingual children have the same vocabulary size and gain the same vocabulary knowledge. Creative functioning In a study testing for creative functioning that involved monolingual and bilingual children in Singapore, researchers found that monolinguals performed better on fluency and flexibility than bilinguals. The trend was reversed, however, on tests for originality and elaboration. Mental well-being In another recent study in Canada, it has been shown that monolinguals were worse at the onset of senility than bilinguals. In the study, it seems that being bilingual is associated with a delay of dementia by four years as compared to monolinguals. Bialystok's most recent work also shows that lifelong bilingualism can delay symptoms of dementia. It is believed that bilingualism contributes to cognitive reserve by preventing effects of cognitive delay and prolonging the onset of sicknesses such as dementia. Cognitive reserve refers to the idea that engaging in stimulating physical or mental activity maintains cognitive functioning (Bialystok et al., 2012). In that case, knowing more than one language is