A new study by researchers at Princeton University took a look at income and emotional well-being.

The university polled 450,000 people and found the amount of improvement of emotional well-being stops being affected by money at around $75,000.

The study says that things seem to get worse if someone's income is below $75,000 because there is less disposable income. Marital and health problems may seem worse when there is less money to go around.

However, the study also found that having more than the $75,000 amount may not improve a person's well-being because they have to work longer and harder to get it. This could mean less time for family or leisure.

The study concludes that having a high income can buy satisfaction in life, but not necessarily happiness.

The full study can be read on Princeton University's .