Research suggests that by taking tests or practice tests,one's retention of material and therefore memory is improved.Which term refers to this finding

A)  serial-position effect 
B)  testing-effect 
C)  procedural effect 
D)  study bias

The term that refers to the finding of improved retention of material through testing or practice tests is the testing-effect. Therefore, option B is the correct answer. The serial-position effect refers to the tendency to remember the first and last items in a list better than the middle ones. Procedural effect refers to improvement in performing a task due to practice or repetition, and study bias refers to an extraneous factor that can influence the results of a study.