THE PRESIDENCY by HUGH SIDEY: THE ACTIVE-POSITIVE SEARCHING

James David Barber is getting a bit weary of people coming up to him and telling him their mothers-in-law are "active-negative" types. But the burden is borne genially by this Duke University political science professor who devised his special psychological measurement for Presidents, not for mothers-in-law.

From detailed study, Barber rates the energy a President puts into his job as either "active" or "passive," and he catalogues how a President feels about what he does as either "positive" or "negative." The combination of these elements of energy and attitude places the man in one of four categories ranging from passive-negative...