A Well-Known Example of a Study That Produced a Nonlinear

Multiple Choice

A well-known example of a study that produced a nonlinear effect was the memory study by Ebbinghaus that produced his forgetting curve. Which of the following is true about his study?

A) the independent variable was the amount of time between studying and recalling
B) it was a single-factor, two level, repeated-measures design
C) it was a multilevel, matched groups design
D) the independent variable was a "savings" score