The purpose of the study by Krug and Weaver (2005) was to conduct a study on the reliability of eye witness memory by studying memory in product identification, which is common in civil cases. The independent variables are the products used in the recipes and time, with eight levels (the number of products used) and two levels (a week and two weeks), respectively. The dependent variable is the memory performance after the subject has been exposed to the recipe and the said products. The participants were one hundred and ten Baylor University undergraduates who consist of ninety-six women and fourteen men. Their age range was 18 to 23 years old. These participants received extra credit for participating in the experiment.