Choosing employees by mental and physical tests . to produce an obstacle in ourwork, as the point is covered by other tests. If we hadfailed in the above case in analyzing the particularpoints of efficiency, the matter would be covered formost cases by the finger speed and dexterity test onour match-board. We might not have known why thesubject under test made the record, as we did in theabove analysis, but we would havehad a sure record to depend upon. The match-board test of fingerspeed and dexterity, as formerly de-scribed, differs from the arm testonly in the length of swing. It con-sists
Choosing employees by mental and physical tests . to produce an obstacle in ourwork, as the point is covered by other tests. If we hadfailed in the above case in analyzing the particularpoints of efficiency, the matter would be covered formost cases by the finger speed and dexterity test onour match-board. We might not have known why thesubject under test made the record, as we did in theabove analysis, but we would havehad a sure record to depend upon. The match-board test of fingerspeed and dexterity, as formerly de-scribed, differs from the arm testonly in the length of swing. It con-sists in getting the subject to fill arow of holes, running from the topto the bottom of the board, withmatch sticks. The operation con-sists in picking the matches one at atime from a wooden box screwed ad-jacent thereto, and conveying them tothe holes and placing them hand travels an average of 10centimeters from the box to theholes and 10 centimeters back, using ,nearly all the movements in ordinarypiece operations except the filling of. Tests for Eight- and Left-Hand Finger Speed, and for Ambidexterity The above shows a section of the match-board. For the righthand—under A—the subject is asked to place as many sticksin the holes as possible in 30 seconds. The same is repeatedunder B for the left hand; and then under C for both handsat once, testing ambidexterity. The average for the righthand is 16, for the left 15, and for ambidexterity 24 are good tests for piece-workers. 208 CHOOSING EMPLOYEES the span of the hands or a long arm swing. Theaverage on this finger test is the ability to fill sixteenholes with the right hand. The difference betweenthe right and left hand is not so great as many sup-pose, since the average of the left hand in this test isfifteen holes. This is an almost unfailing test in itsresults. It has been tried mostly on women. The op-eration needs little explanation, so that few subjectshave any handicap in lack of comprehension.
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