That statement is true.
Maintenance rehearsal involves repeating the information over and over again in our head until our memory could hang on to it.
Meanwhile, elaborative rehearsal requires you to create a unique term that you could use to trigger a deeper memory.
Real Estate! It is the safest investment. $10,000 can be a down payment on a small home depending on where the friend lives.
Tax deferred annuities or 401k plans through an employer are also safe investments. Any investment that has long term growth rather than risky stocks is a smart choice.