How we mentally categorise money
...You just received a $1,000 bonus at work, and within hours, you’re already mentally spending it on that gadget you’ve been eyeing or planning a weekend getaway. But imagine if your boss asked you to take $1,000 from next month’s salary for the same purchase (assuming it doesn’t affect your normal spending), suddenly it feels much harder to justify, right?
This isn’t just any coincidence, but rather a psychological phenomenon known as mental accounting. Essentially, it is a psychological quirk that causes us to treat identical dollars differently based on where they come from or what we intend to use them for.
This cognitive bias, first systematically studied by Nobel Prize-winning economist Richard Thaler, reveals a fundamental flaw in how our brains handle money. Despite the economic principle that all money should be treated equally (economists refer to this as fungibility), we consistently create mental compartments that lead to irrational financial decisions.
