Comments on an article by Deborah M. Lawton et al.(see record 2015-18271-016). In their recent study using a sample of 1,789 participants from the Sacramento Area Latino Study on Aging who were followed for up to 10 years, Lawton et al. not only included the design features discussed above, but they also examined another potential confounding factor by investigating whether immigrant status affected the relationship. The authors found that the link between bilingualism and age of onset remained non-significant even when immigrant status was addressed. Moreover, the direction of the observed association suggests that the lack of support for the hypothesis is not due to low power, despite the fact that there were only 54 monolinguals and 27 bilinguals who developed dementia during the course of the study: In the study, monolingual participants were older at the time of diagnosis with dementia than bilingual participants (81.1 vs 79.3 years), although the age difference did not reach statistical significance (p �. 26). This finding is particularly surprising for two reasons: 1) it is in the opposite direction of that predicted by the theory that bilingualism delays dementia onset, and; 2) monolingual respondents also had many fewer years of education, on average, than bilinguals (4.99 years vs 7.70 years). Lower levels of education are consistently associated with a substantially higher risk of incident Alzheimer's disease.(PsycINFO Database Record (c) 2016 APA, all rights reserved)