From the link....
' small companies that specialize in what Ramsay Brown calls "brain hacking."
Ramsay Brown: A computer programmer who now understands how the brain works knows how to write code that will get the brain to do certain things.
Ramsay Brown studied neuroscience before co-founding Dopamine Labs, a start-up crammed into a garage. The company is named after the dopamine molecule in our brains that aids in the creation of desire and pleasure. Brown and his colleagues write computer code for apps used by fitness companies and financial firms. The programs are designed to provoke a neurological response.
"A computer programmer who now understands how the brain works knows how to write code that will get the brain to do certain things." Ramsay Brown
Anderson Cooper: You're trying to figure out how to get people coming back to use the screen?
Ramsay Brown: When should I make you feel a little extra awesome to get you to come back into the app longer?
The computer code he creates finds the best moment to give you one of those rewards, which have no actual value, but Brown says trigger your brain to make you want more. For example, on Instagram, he told us sometimes those likes come in a sudden rush.
Ramsay Brown: They're holding some of them back for you to let you know later in a big burst. Like, hey, here's the 30 likes we didn't mention from a little while ago. Why that moment--
Anderson Cooper: So all of a sudden you get a big burst of likes?
Ramsay Brown: Yeah, but why that moment? There's some algorithm somewhere that predicted, hey, for this user right now who is experimental subject 79B3 in experiment 231, we think we can see an improvement in his behavior if you give it to him in this burst instead of that burst.
When Brown says "experiments," he's talking generally about the millions of computer calculations being used every moment by his company and others use to constantly tweak your online experience and make you come back for more'