CompTIA Strata *In the event that you fail your first (1st) attempt to pass any CompTIA certification examination, CompTIA does not require any waiting period between the first (1st) and second (2nd) attempt to pass such examination.
See normal distribution for the bell curve in statistics. The Bell Curve is a controversial, best-selling 1994 book by Richard J. Herrnstein and Charles Murray exploring the role of intelligence in American life. The authors became notorious for the book's discussion of race and intelligence in Chapters 13 and 14.
In response to the growing controversy surrounding The Bell Curve, the American Psychological Association 's Board of Scientific Affairs established a special task force to publish an investigative report on the research presented in the book.he Bell Curve argues that: 1  Intelligence exists and is accurately measurable across racial, language, and national boundaries. 2  Intelligence is one of, if not the most, important factors correlated to economic, social, and overall success in the United States, and its importance is increasing.