I bought this inventory of findings about human behavior several decades ago (while I was an undergraduate student at Bradley University). At that time, it was a useful volume, summarizing propositions about human behavior.
For instance, on page 304: "The large majority of adults in all societies are married". Or on page 413: "On the whole, the higher the status of the members and the more satisfied they are, the more actively they participate in union affairs." Page 509: "As people move from one social group to another, they tend to take over the attitudes and practices of the new group. . . ." Some of these propositions are certainly not earth shaking. Nonetheless, this was a nice effort to identify what we know about principles of human behavior, based on extant research of the time.
Looking back at this now, it is not totally satisfying. Still, in its time, it made its own contribution.