0:00 Walking for 30 minutes for 30 yen
4:55 The same brain dulls when you think about what's in your wallet
9:45 Even the rich don't buy time
13:59 Courtroom – Is it a habit or a situation?
17:03 Conclusion – There's more to the story about that field

Walking 30 minutes round trip for eggs that are 30 yen cheaper. Trying to fix something yourself for 2 hours to save 500 yen. Standing in line for points. If you've ever done any of these: Your actions aren't because you're weak-willed or bad at math. This video explains, based on research in behavioral economics and neuroscience, why people forget to put a price tag on their own time.

Chapter 1 confirms the imbalance that our brains don't have a "time ledger." We can count the 1 yen that leaves our wallets, but the 30 minutes that leave our bodies aren't recorded. This chapter examines experiments showing how people's judgments change depending on whether they're asked about the price or the time spent on a purchase, and how the psychology of regretting past time spent doesn't come into play when it comes to time, but resurfaces the moment it's converted into money. Up to this point, we're discussing "mental habits."

Chapter 2 introduces an experiment that fundamentally challenges this theory. In India, sugarcane farmers have a harvest day once a year when they receive a substantial sum of money. A study measuring the same farmers' intelligence before and after the harvest revealed a significant difference in their intellectual processing performance—a difference equivalent to having stayed up all night. This couldn't be explained by nutrition, workload, or season. In other words, it's not that poor mental stamina leads to poverty, but rather that the lack of resources itself diminishes mental performance.

Chapter 3 shows that the issue doesn't end with "the problem of low-income individuals." While it's known that buying time (delegating chores and travel to others) increases satisfaction, high-income earners don't necessarily do it, and even wealthy people often refrain from buying time due to guilt. Furthermore, time poverty doesn't necessarily correlate with income poverty; Japanese data shows that in over half of dual-income households, at least one partner experiences time poverty. Even with money, time is often cheaply traded.

Chapter 4 is a courtroom scenario. We'll examine the arguments that "mental habits come first" and "environment comes first," examining each theory's weaknesses. The verdict isn't a simple victory for one side; both are true, and they reinforce each other. After understanding this structure, you'll take home five prescriptions for putting a price tag back on time.

★ This video isn't about blaming people who waste time. Rather, it's the opposite; it addresses why shifting responsibility to individual willpower is misguided.

This channel dissects and names the "unnamed phenomena" of psychology and society. Subscribe and see you in the next case study! Do you think selling your time cheaply is due to a habit or circumstances? And what was the cheapest time you've recently given away? Please share your thoughts in the comments section.


[List of Sources and References]

■Research
Mani, A., Mullainathan, S., Shafir, E., & Zhao, J. (2013). Poverty Impedes Cognitive Function. Science, 341(6149), 976-980. — Comparing Indian farmers before and after harvest, even the same individuals showed a significant drop in cognitive processing performance during periods of scarcity.
Shah, A. K., Mullainathan, S., & Shafir, E. (2012). Some Consequences of Having Too Little. Science, 338(6107), 682-685. — When placed in a state of scarcity, attention is drawn to the immediate lack, sacrificing judgment on other matters.
McClure, S. M., Laibson, D. I., Loewenstein, G., & Cohen, J. D. (2004). Separate Neural Systems Value Immediate and Delayed Monetary Rewards. Science, 306(5695), 503-507. — The brain evaluates "immediate" rewards and "later" rewards using different mechanisms.
Tversky, A., & Kahneman, D. (1981). The Framing of Decisions and the Psychology of Choice. Science, 211(4481), 453-458. — Even with the same amount saved, the percentage of people who would go to a distant store varied greatly depending on whether the purchase was inexpensive or expensive.
Soman, D. (2001). The mental accounting of sunk time costs. Journal of Behavioral Decision Making, 14(3), 169-185. — Time already spent is not regretted, but as soon as it is converted into a monetary value, it becomes regrettable.
Zauberman, G., & Lynch, J. G. (2005). Resource Slack and Propensity to Discount Delayed Investments of Time Versus Money. Journal of Experimental Psychology: General, 134(1), 23-37. — People tend to think they will have plenty of time in the future, and this illusion is stronger with respect to time than with money.
Frederick, S., Novemsky, N., Wang, J., Dhar, R., & Nowlis, S. (2009). Opportunity Cost Neglect. Journal of Consumer Research, 36...