When scientists study how we think, they usually design their experiments to control as many variables as possible. Though essential for careful science, these expensive measures restrict research in many ways: most psychology studies are conducted on small groups of Western undergraduates over short periods. Most scientists agree we could learn more from longer studies of larger, more diverse populations, but until recently acquiring such data proved nearly impossible. Now the vast data sets of an online brain-training company, Lumos Labs, are offering insights that have been out of reach for traditional laboratories.
from Scientific American Content: Global http://www.scientificamerican.com/article.cfm?id=online-data-trove-exposes-our-cogni