The Mind of the Child, Part II: The Development of the Intellect, International Education; Series Edited By William T. Harris, Volume IX.Preyer, William T.
Science
The Mind of the Child, Part II: The Development of the Intellect, International Education; Series Edited By William T. Harris, Volume IX.
Preyer, William T.
Child development; Child psychology
the objects before him resemble in contour the previous field of vision,
i. e., are round, and which do not; for the round contour of his field
of vision is familiar to him. But W. had learned, through the sense of
touch, that what is not round is angular. He would, therefore, even if
he could perceive colors when the whole field of vision was filled--a
matter on which we have no information--be able to guess the outlines of
some objects soon after the operation, merely on the ground of his
experiences before it. It was guess-work every time, as appears from the
confounding of knife and spoon, mug and basin. The boy must have
thought, "How would it be if I felt of it?" and, as he had before the
operation frequently observed that whatever had the same contour as his
field of vision, or a contour similar to that, was round, he could,
after the operation, distinguish round and not round--a thing which a
person born blind, on the other hand, and knowing nothing of his field
of vision, because he has never had any, can never do.
On the whole, the two Ware cases are by no means so important as the
Franz (see below) and Chesselden cases, because the boy, W., had ample
opportunity up to his seventh year for learning to distinguish different
colors according to their quality and luminous intensity; because he
must have known the limits of his field of vision, and could in any
case, by means of touch, correct and relatively confirm his very
frequent attempts to guess at forms and distances by the eye. Finally,
it is not known whether he became blind before or immediately after his
birth, or, as is most probable, not till some months after birth. The
same is true of the second case.
IV, V. THE HOME CASES.
Everard Home makes the following statement in the "Philosophical
Transactions of the Royal Society," London, 1807, i, pp. 83-87, 91:
Public-domain text, read in full here on John Shaqi.
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