Bøger af John C. Ball

In this study, 224 ninth graders from two similar Kentucky towns were obtained by means of the Minnesota Multiphasic Personality Inventory. The emergence of various group patterns in this study demonstrates that the complexity of human personality necessitates complex analytic procedures.

Legislators, journalists and concerned citizens in general, when consider ing what to do about the plague of heroin addiction in large cities, ask an obvious question: "Is methadone treatment effective?"