Editing Time preference (section)

=== Interest rates ===
Discount rates and traditional economic problems both inform and are influenced by each other. For example, the interest rate plays an important role in individual discount rates. If one can accumulate interest at a certain rate, say 5% per year, one should not have a discount rate below this. Say you are offered $100 today or $105 in one year. You should be, at the very least, indifferent between the two, regardless of other factors. This is because, if you take the money now and invest it, you will also have $105 in one year. Coller and Williams find this to be true, showing that when you give participants information about the real world interest rates, their elicited discount rate falls.<ref>{{Cite journal |last1=Coller |first1=Maribeth |last2=Williams |first2=Melonie B. |date=1999-12-01 |title=Eliciting Individual Discount Rates |url=https://link.springer.com/article/10.1023/A:1009986005690 |journal=Experimental Economics |language=en |volume=2 |issue=2 |pages=107–127 |doi=10.1023/A:1009986005690 |issn=1573-6938|url-access=subscription }}</ref>