. Thinking, feeling, doing . theboys lost t2¥3q, or 23 per cent of the original number oftaps. The amount of fatigue was greatest at eight yearsand decreased with advancing age. It is very re-markable that without exception of a single age thegirls were less fatigued than the boys. A comparisonof the two figures suggests a conclusion as to the im-petuosity of the boyish character. CHAPTER III. REACTION-TIME. A series ofreactions. The chain-reaction. When you signal to the car conductor to stop, he re-acts by pulling the bell-strap, the driver reacts to thesound of the bell by pulling the reins
. Thinking, feeling, doing . theboys lost t2¥3q, or 23 per cent of the original number oftaps. The amount of fatigue was greatest at eight yearsand decreased with advancing age. It is very re-markable that without exception of a single age thegirls were less fatigued than the boys. A comparisonof the two figures suggests a conclusion as to the im-petuosity of the boyish character. CHAPTER III. REACTION-TIME. A series ofreactions. The chain-reaction. When you signal to the car conductor to stop, he re-acts by pulling the bell-strap, the driver reacts to thesound of the bell by pulling the reins, and the horsesreact by coming to a rest. By reaction, then, we willunderstand action in response to a signal. The timebetween the moment of the signal and the momentof the act is known as the reaction-time. Is there any such time ? Quick as thought—that mustbe pretty quick. Let a number of persons stand in In-dian file as if about to march; each one places his righthand on the head (or shoulder) of the person in Fig. 12. A Series of Reactions. Bend the file around till a complete circle is formed withevery right hand on the head of the one in front. Oneof this file we will call the experimenter; in his left handhe holds a watch—preferably a stop-watch. All the restclose their eyes. The instruction is given: Whenever you 38 Reaction- Time. 39 feel a sudden pressure from the hand on your head, youmust immediately press the head of the person in the second-hand of the watch is at the beginningof a minute, the experimenter presses the head of the onein front, he presses that of the next in front, and so pressure thus passes all around the group and finallycomes back to the experimenter. At the moment hefeels the pressure he notes how many seconds have there were ten persons in the circle and the Cf**
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpsychop, bookyear1895
