Gerald D. Tharp has found that students with higher grades were usually of the I and J types while student with lower grades were of the E and P types. This relation is not a new finding but additional support for Melear’s earlier finding that, “the EP students not only achieve the lowest, but are twice as likely to be the lowest
achievers. 20â€
Tharp also found that the SJ types were the students who had the highest grades followed by the ST types. The last two types in terms of grade average were the IN and IS.
Yet, studies conducted by psychologists, K. T. Schurr and V. Ruble (1988) indicate that students of the IN personality type are usually better prepared for college than the ES types. According to their analysis, the combination of the E-I and S-N indicators were most significantly related to SAT scores and High School Grade Percentiles. By contrast, the combination of the E-I and J-P dimensions produced 19 (Tharp, Gerald D., 1992) 20 (Tharp, Gerald D., 1992)
indicators were more significantly related to achievement by any measure other than the SAT. Moreover, the “J-P scale is indicative of the personality characteristic that is most uniquely associated with college instructor’s evaluation of achievement.
†Based on these three findings, they concluded that college is much better suited for students of the J, N and I preferences while the students with the P, S, and E preferences do significantly worse on the academic side of college life, thought they may excel in non academic pursuits or have unusual success later in life.