One huge limitation is that
people who play videogames on their own, or who decide to invest in Lumosity, aren't a representative sample of the population.
It's no wonder, then, that commercial enterprises would step in to capitalize on these fears,
which is exactly what happened when Lumosity opened its virtual doors to sell its brain training products.
Though some services like Lumosity are promising,
research hasn't yet proven that these programs effectively boost working memory capacity, says Mark McDaniel, Ph. D, a memory researcher at Washington University in St. Louis.
For $80 a year, or $15 a month($300 for life), its 1 million subscribers get access to the
brain training games exclusively developed by Lumosity and marketed as the cure to aging's neuron-destroying properties.