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Interest, attention, encouragement, emotion, and similar moods and
outside influences can strongly improve adaptation, unless the
emotion is too strong. Remembering, thinking and pure muscular control
can be made more efficient, as happens during an examination.
Emotion can even be judged by recording the pupil size of the
observer. This unconscious adaptation gives a more reliable measure
of the degree of pleasure (pupil large) or fear (pupil small) than
the oral response does, It is à practical method to evaluate the
response of modern art gallery visitors. (Hess, 1965),
This example has no direct relevance to photo-interpretation, or is
it one of the reasons for the over-sized exit pupils of the ST-4
stereoscope — as the observers are so pleased with the excellent
quality of the aerial photographs?
p
photographs reguire some days to be appreciated as being reasonable -
[1+ was related before that new type imagery or very poor quality
probably most photo-interpretors can give striking examples of
similar nature.
Recently, a photogrammetrist, when working on almost feature-less
pictures at ITC (Nour, private comme 1968), experienced the diffe-
rence between fusion and depth perception. Carrying out point
transfer from a paperprint to the diapositive of the same negative,
fusion was relatively easy, as there were no parallaxes, After
handling a dozen prints in a test he turned again to normal stereos-
copic pairs, and found depth perception difficult and tiresome,
although fusion was easily obtained, This could be due to the adap-
tation of the neural circuitry and the data-processing for fusion,
by ignoring accidental parallaxes, whereas later the small parallaxes
were essential to see depth, and should not be ignored.) UN 9
| EDUCATION asks more self-cooperation of the person. It is not feasible
to educate by applying pressure and by suppressing the pupil's mental
activity. Motivation is a better stimulus to educate up to a higher
level of thinking, to see relations, logical connections, to discover
rules, etc. Still, education is not basically different from training
and learning; there are gradual transitions from one into the other,
and all three in general cooperate to reach the goal of optimum adap-
tation to face a taske In this connection, the oral communication
between pupil and staffmember strengthens the visual impression, as
does drawing on the prints. The more pathways used to bring the message
to the brain, the better the subject is remembered. Hand and mouth
assist the eye in almost any learning, so surely in the training and
education of photo-interpretorse