Animal intelligence: Experimental studiesThorndike, Edward L. (Edward Lee)
Science
Animal intelligence: Experimental studies
Thorndike, Edward L. (Edward Lee)
Animal intelligence; Psychology, Comparative
Still more noteworthy evidence is found in the behavior of cats and
dogs who were put in these boxes, left one or two minutes, and then
put through the proper movement. For example, a cat would be put in B
(O at back) and left two minutes. I would then put my hand in through
the top of the box, take the cat’s paw and with it pull down the loop.
The cat would then go out and eat the fish. This would be done over and
over again, and after every ten or fifteen such trials the cat would be
left in alone. If in ten or twenty minutes he did not escape, he would
be taken out through the top and not fed. In one series of experiments
animals were taken and thus treated in boxes from which their own
impulsive activity had failed to liberate them. The results, given in
the table below, show that no animal who fails to perform an act in the
course of his own impulsive activity will learn it by being put through
it.
In these experiments some of the cats and all of the dogs but No. 1
showed no agitation or displeasure at my handling from the very start.
Nor was there any in Dog 1 or the other cats after a few trials. It may
also be remarked that in the trials alone which took place during and
at the end of the experiment the animals without exception showed that
they did not fail to perform the act from lack of a desire to get out.
They all tried hard enough to get out and would surely have used the
association if they had formed it.
TABLE 7
===========+===============================+==============+============+
Individual | Apparatus |Time in which |Number of |
| |impulsive |times the |
| |activity |animal was |
| |failed to lead|put through |
| |to the act |the movement|
-----------+-------------------------------+--------------+------------+
Cat 1 | F (String outside unfastened) | 55.00 | 77 |
Cat 5 | G (Thumb latch) | 57.00 | 59 |
Cat 7 | G (Thumb latch) | 50.00 | 30 |
Cat 2 | G (Thumb latch) | 54.00 | 141 |
Dog 2 | BB1 (O at back, high) | 48.00 | 30 |
Dog 3 | BB1 (O at back, high) | 20.00 | 85 |
Dog 2 | M (Lever outside) | 15.00 | 95 |
Dog 1 | FF[12] | 30.00 | 110 |
Chick 89 | X (see page 53) | 20.00 | 30 |
Cat 13 | KKK,[13][14] | 40.00 | 65 |
===========+===============================+==============+============+
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