involved. The Kretchmer school, on the other hand, does attempt to correlate measured physical factors with measured psychological factors. It is to be noted that Dr. Schlegel contributes to a journal edited by Dr. Kretchmer and Dr. O. von Verschuer, a geneticist who also has made twin studies.

Dr. Schlegel classifies humans into two general physical types. The first has to do with the overall strength of the body skeleton and musculature. The second has to do with the struc ture of the pelvis, in view of the well-known fact that the most important skeletal difference, aside from body height, between the male and female sex, consists of the pelvic structure. Now, there are females who are quite athletic in physique and/or who have small pelvic openings, making childbirth more complicated. Also, there are males who are quite unathletic in physique and/or who have pelvic openings that are larger than the average (for males). These humans are called intermediate types. Males who are athletic and who have a typically male pelvic structure are said to have concentrated male characteristics. Females who have weaker bodies and a typically female pelvic structure are said to have concentrated female characteristics.

Along with, or parallel to, the above physical types, there is said to be a set of psychological types, as regards sexual behavior and certain other behavior. A male with concentrated male characteristics tends to be aggressive, single-minded, idealistic, logical, persevering, etc. A female with concentrated female characteristics tends to be passive, fickle, driven by emotion rather than by logic, tires easily, etc. A person of either sex who belongs to an intermediate type tends to be somewhat mixed up and also unpredictable in

some cases.

Along about this time, not only do

one

the sexes get mixed up, but the reader also tends to get mixed up! This reviewer invites anyone with some background in math to consider the mathematical aspects of logical structure that Dr. Schlegel proposes. The seemingly simple logical structure of the arguments is far from simple.

However, Dr. Schlegel does not commit any logical crimes that have not been committed previously with official sanction. He most certainly goes to far greater lengths to support his theories with verifiable statistics than do many workers in his field. The psychoanalytic school, for example, as typified by the brilliant but most dogmatic Dr. Freud, considers such things as statistics as being beneath its dignity. How on earth can we ever propagate the "true faith", when statistics keep insisting on getting in the way?-the Freudians ask. We may not agree with Dr. Schlegel's statistics, or with his interpretation of them, but at least we are given some statistics to chew on.

Dr. Schlegel does give some striking statistics, which are of such a challenging nature that they must be given some attention. Most importantly, he exhibits a graph which shows in an unmistakable fashion that body type and divorce rate do have a very high correlation. The human types who have concentrated sexual characteristics are shown to make lasting marriage arrangements, whereas those of the intermediate types will tend to have more divorces, far and away. Assuming that Dr. Schlegel was reasonably unbiased and objective in making his observations, then we cannot escape the conclusion that body type and marital fidelity do have a strong correlation of some kind.

Another graph shows that homosexuals, in general, tend to have a body type different in significant degree from the average body type, in the case of males. This finding, too, would be highly important, if it could