Introduction A General Perspective of Research and Researchers
Observation 1 for 2. —At 0; Laurent examines a watch chain hanging from his index finger. At first he touches it very lightly simply “exploring” it without grasping it. He then starts it swinging a little and at once continues this thus rediscovering a “derived secondary reaction.” But instead of stopping there, he grasps the chain with his right hand and swings it with his left while trying some new combinations (here the “tertiary reaction” begins); in particular he slides it along the back of his left hand and sees it fall off when it reaches the end. Then he holds the end of the chain (with his right index finger and thumb) and lets it slide slowly between the fingers of his left hand (the chain is now horizontal and no longer oblique as before). He studies it carefully at the moment when the chain falls from his left hand and repeats this ten times. Afterward, still holding the end of the chain in his right hand, he shakes it violently which makes it describe a series of varied trajectories in the air. He then shows these movements in order to see how the chain slides along the quilt when he merely pulls it. Finally he drops it from different heights and so rediscovers the schema acquired in the preceding observation. From his twelfth month Laurent repeated these kinds of experiments with everything that his hand came upon. He entertains himself either by making them slide or fall or by letting them go in different positions and from different heights in order to study their trajectory [p. 269].
KeywordsFibrinogen Blindness Myopia Papain Lewin
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