CBC Marketplace's Virginia Smart speaks to Dopamine Labs, an aptly-named California startup that helps companies make their apps addictive, so that people will spend more and more time with them.
One of the most popular techniques, he says, is called variable reinforcement or variable rewards.
It involves three steps: a trigger, an action and a reward.
A push notification, such as a message that someone has commented on your Facebook photo, is a trigger; opening the app is the action; and the reward could be a "like" or a "share" of a message you posted.
These rewards trigger the release of dopamine in the brain, making the user feel happy, possibly even euphoric, Brown says.
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