Bibliography (12):

1. Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement

2. The Advantages of Bilingualism Debate

3. Bilingualism Affords No General Cognitive Advantages: A Population Study of Executive Function in 11,000 People

4. No evidence for a bilingual executive function advantage in the nationally representative ABCD study

5. Computerized Cognitive Training in Cognitively Healthy Older Adults: A Systematic Review and Meta-Analysis of Effect Modifiers

6. Wikipedia Bibliography:

   1. Cognitive effects of bilingualism

   2. Executive functions

   3. Systematic review

   4. PsycINFO

   5. https://en.wikipedia.org/wiki/MEDLINE  :

      https://en.wikipedia.org/wiki/MEDLINE

   6. PubMed

   7. Working memory