Volume II of the book to which you are probably referring, was written
by Fr. Chad Ripperger, whom Francisco Romero told me is the "Star
Theologian" of the Priestly Fraternity of St. Peter. Vol II was
originally sold by itself in paperback and is apparently different to
find, used. Vol II goes over the spirual life: the infused virtues
and gifts, the fruits of the Holy Ghost, the sacraments, the demonic
and how to oppose it. I've seen most of the material elsewhere before
but in Vol II, it is presented to train the therapist to best help his
therapent and might even be of help to the therapent himself. All my
copies are lent out or I would offer to lend it to you through the
mail.
Couldn't tell you about Vol I and III, though I looked at them. There
is a helpful and wll done diagram of the passive and possible
intellects in the back of the one volume version of the series of
books.
Here are my hypotheses about some of the differences you're inquiring
about (not necessarily all based on the book discussed above): Modern
psychology denies the existence of the human soul. Modern psychology
is materialist. Modern psychology denies the existence of free will
and a non-material intellect. Modern psychology asserts that all
mental acts are acts of the brain, or brain processes. Modern
psychology would have us believe that men are deterministic systems
(at least in the probablistically deterministic sense of physicists).
Of especial importance: Modern psychology denies the existence of the
demonic, and demonic causes of mental illness. Perhaps 80% of mental
illness is demonically caused, at least in part. Modern psychology
almost always recommends exactly the actions on the part of the
therapent (really he should be called the "victim") that will make his
condition worse, as when a psychiatrist recommends giving in to sexual
passion to, say, a homosexual therapent. (Someone should initiate a
class action lawsuit on behalf of all the homosexual men who died and
are going to die of AIDS because of the politically-correct decision
of one group of psychologies and/or psychiatrists to re-label
homosexuality as "not a mental illness". Any takers?) Modern
psychology is a money making machine for psychologists, psychiarists,
and pharmaceutical companies (though Fr. Ripperger acknowledges that
the psychotropic drugs can provide a crude sort of help in some
cases). Modern psychology denies the value of things like the
Sacraments, holy hours, prayer, the Rosary, penance, or simply being
Roman Catholic (that is, a member of the only true religion),
recommending instead the opposite actions, and even, in some cases,
using such religious acts as evidence of mental illness.
God bless,
Daniel Offutt