Do You Learn Better by Sight or by Sound?

How do you study? Do you use flash cards and read material? Do you just record your material and listen to it over and over again? These two techniques are used by millions of students all over the world, but one question is; which technique teaches people faster? How can you save time, but know the material you have to study?
A study at Yale University involving this matter said that seventy- three percent of people learned faster by using flash cards and/or by reading their material over and over again. Basically, they learned faster by sight, but is this scientifically true? …