Animal Education; An Experimental Study on the Psychical Development of the White Rat, Correlated with the Growth of Its Nervous System Volume 4, No. 2

Animal Education; An Experimental Study on the Psychical Development of the White Rat, Correlated with the Growth of Its Nervous System Volume 4, No. 2

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1903 edition. Excerpt: ... first to make definite efforts to get back to its mother; the second rat made no attempts whatever to return. If the memory processes are present at all in rats of ten days of age, they must be so slightly developed as to be of little use in bettering the condition of the young rat. Up to ten or twelve days of age, life to the rat is a matter of pure instinct. Rats at that age show very few signs of purposeful movement, unless they are disturbed. If the mother moves the position of the nest, she must carry each baby rat with her. If, however, they feel the mother over them, they will fall on their backs and sides and begin to suck. If in leaving the nest the mother scatters her young, they manage to huddle up near one another.1 An interesting thing in the above experiments comes out in regard to the mother's care for her young; whenever a little fellow grew uncomfortable during a test it would utter a shrill squeak, which would invariably bring tlie mother's head to the opening. February 24 (twelve days of age).--In order to give the mother time to get over her fright thoroughly, experiments were omitted for one day. By the end of the twelfth day the rats had grown considerably larger and movement had become much better co-ordinated.2 A young rat was started in compartment 3. It went at once through b and wandered around compartment 2 for a time. Finally it went through d, then straight on through /. Its mother was in the back of the box, but the little fellow walked on through the straw and did not stop until it reached her. Its mother appeared not to have missed it at all. Time: 8 min. Second trial: This time the rat returned in 1 min. It chose exactly the same pathway as before. This was a definite and businesslike procedure. Third trial: ...show more

Product details

  • Paperback | 38 pages
  • 189 x 246 x 2mm | 86g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236494628
  • 9781236494627