A psychologist examined the effect of chronic alcohol abuse on memory. In this experiment, a standardized memory test was used. Scores from the general population form a normal distribution with m = 5. What is the purpose of using a standardized memory test in this experiment?
1) To compare the memory scores of individuals with chronic alcohol abuse to the general population
2) To determine the effect of chronic alcohol abuse on memory
3) To establish a baseline for memory performance in the general population
4) To assess the reliability and validity of the memory test