Mr V'Dalari says:
"I noticed something quite interesting while going over the data from the decider amulets tests on the brochoah. The Brochoah seem to have a second resevoir of power, that isn't psi, but interacts enough with their psi to have registered on the test.
Digging around in the data, I've been able to tell that the Brochoah seem to have a fourth overall stat. This is different from the Deciders, who have three stats (Body, Mind, Decision) and four substats (Strength, Precision, Coordination, Special) in each; the Brohcoah have four stats (Body, Mind, Psi, ???) and three substats (Strength, Precision, Special) in each."