From iMedicalApps and the University of Arizona:
A graduate student from the University of Arizona, Janelle Wohltmann, is studying whether Facebook use can improve older adult cognitive performance and make them feel more socially connected.
Her preliminary findings show that after using Facebook, older adults performed about 25 percent better on tasks designed to measure their ability to continuously monitor and to quickly add or delete the contents of their working memory, also known as “updating”.
The interesting thing about the study is one of the comparison group did perform tasks testing their cognitive functions. The comparison group was taught to use an online diary site — but it did not have a social function. Another group did not use Facebook or use the online diary.