system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What hormone is associated with motivation? Theoretically, could motivation be artificially (chemically) increased?
gpt
Motivation seems to be closely linked to dopamine and noradrenaline neurotransmitter activity in brain, particularly in the pre-frontal cortex (PFC).

People with ADHD notoriously have reduced ability to keep motivated and focused on a given task. Doctors prescribe medications like Ritalin to compensate for this and after taking the drug ADHD patients will often become highly-focused and motivated.

Drugs like Ritalin are stimulants and act to increase dopamine and noradrenaline activity in the brain, particularly in the PFC. The PFC is important for higher-level functions of the brain like self-control, discipline, filtering (what you say or do), focus, reason, planning, etc. so it's not surprising that motivation can be affected by manipulating PFC neurotransmitter activity.

So to answer your question - Yes... Not just theoretically, but indeed people take stimulants all the time to increase motivation and focus, particularly those with conditions like ADHD but also many people without ADHD resort to using stimulants, for example, to increase productivity for school work and studying.