THE
PROLONGED
INTERVIEW
207
pulse
which was once
activated, and
which
seized
upon a
past
episode and gave
it the
significance of
a
threat?
These are
a
few of the
specific
questions
which
can be
raised
about the
proffered material,
and
the scientific prob-
lem is to
devise more convincing demonstrations of the
available
theories, or more
conclusive
refutations, than
we
now
have. What are
some of the criteria of
a
"traumatic
episode"?
If the reminiscence is accompanied
by
much
affect
(excitement), there is
a
presumption of its authen-
ticity.
And how is affect measured?
We
depend at
the
present time upon the observer's
judgment
of the
variations
in the voice, and
shifts in posture, or the twitches
and
jerks
of the body.
This
can be
augmented under experimental
conditions
by
taking
a
continuous record of variations in
blood
pressure,
respiration, galvanic reflex,
etc.
—
all
of
which offer some indication of excitement.^
We are thus
able
to
improve our assessment of the possible significance
of the
reports,
speculations, and general fantasies of the
subject. It may be that in due course we shall
be able to
differentiate
on
a
physical basis between "suppressions"
and "repressions," and that we shall
be able
to
follow
through the transformations from beginning
to
end of the
interviewing process.
Our
judgment
of the "traumatic episode" is also influ-
enced
by
the subject's certainty. If the subject reports
that
he believes what
he
remembers, this
has
some
value in
raising
a
presumption. This is especially true if
the sub-
ject has fought against the idea,
but
it has spontaneously
continued
to appear
and plague his associations. But
a
re-
'
We are now engaged
upon
studies
of
this kind at the Personality
Laboratory
in the Social Science Research
Building
at the
University of
Chicago. Harry
Stack
Sullivan is conducting
a
series of researches on ex-
pression changes,
with
particular reference to schizophrenia, which
are of
the greatest importance.