Manual of mental and physical tests : a book of directions compiled with special reference to the experimental study of school children in the laboratory or classroom . dings; subtract the latterfrom the former, and divide the remainder by the average ofthe first four readings. This may be expressed by the fomula j? = rr when x =. the desired index of fatigue, rt = the M of the first, and r2 the M of the last four readings. Or (3)more simply, one may indicate endurance by the relationof the average to the maximal grip. (4) Following Binetand Vaschide (7), the records of strong, average and wea
Manual of mental and physical tests : a book of directions compiled with special reference to the experimental study of school children in the laboratory or classroom . dings; subtract the latterfrom the former, and divide the remainder by the average ofthe first four readings. This may be expressed by the fomula j? = rr when x =. the desired index of fatigue, rt = the M of the first, and r2 the M of the last four readings. Or (3)more simply, one may indicate endurance by the relationof the average to the maximal grip. (4) Following Binetand Vaschide (7), the records of strong, average and weak $s(judged by their maximal grip) may be collated and treated inthree groups, in order to trace the presence of the three typesof endurance (see below). 120 PHYSICAL AND MOTOR CAPACITY B. WITH SEPARATE CONTRACTIONS Method.—Adjust the metronome, dynamometer handle andpointer as in the first method. Inform # that, as the word isgiven, he is to make a series of 16 grips, each as forcibly as pos-sible, and that these grips will be signalled at 4-sec. then signals now on every fourth beat of the metronome,and takes the readings as previously FIG. 24. MABEY TAMBOUR. For securing tracings by pneumatic transmission,brane is not shown. The rubber mem- To hasten the acquisition of skill in conducting this form ofthe test, E will find it helpful to accent the spoken now and toget the swing of the four-beat rhythm by mentally counting theother beats, thus: Now, two, three, four: now, two, three,four. As soon as the utterance becomes automatic, E can givehis whole attention to the readings and the recording of them,and an accurate record can be obtained from very quick andbrief excursions of the pointer. Incidentally, some $s may befound who are inclined to hold the pointer up too long: theymust be cautioned against this, otherwise fatigue will set invery rapidly. Variations of Method.—Substitute the kymograph tracingas suggested above. If this is done, there is
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectpsychophysiology
