A neurotransmitter that plays a key role in reward and motivation, which smartphone apps exploit through variable reward mechanisms to create addictive usage patterns.
Every notification, like, comment, and new content piece triggers a small dopamine release in your brain. Smartphone apps are specifically designed to maximize these dopamine hits through variable reward schedules — the same mechanism that makes slot machines addictive. Over time, your brain adapts and requires more screen time to achieve the same dopamine levels, creating a cycle of increasing usage.
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