22 A METHOD OF MEASURING THE DEVELOPMENT 



The test is conducted as follows: Two lines, one 5 centi- 

 meters in length, -t;::d';e:rJer:y:tt"ft:: 



^A^. '^^r^ :: r: to t e c^M. Jon s e 

 these lines. Tell me w^-h .s the -ger. No hesU ^^ ^^^ 



:^-.^™^^^£^5;-jr:s^s^^^ 



for any hesitation is considered a tailure. 

 one, easy to perform and easy to interpret. 



CHILDREN OF FIVE YEARS. 



T romoares two weights.-This is a comparison similar 



"i "s," r- C" s« — rs:i =- 



the length of the lines. 



Four boxes are used, the same in appearance and volume 

 and 17X -spectively 3 grams and 1^ ^-s 6 gr^ms and 

 It: rvrarrTQ First thc two boxcs of 3 and 12 grams are useu. 

 TheTa^ 'pla "on the table before the child with a distance 

 If 5 or 6 centimeters between them. The ch.ld .s asked Yon 

 .ee these boxes Tell me which is the heavier. The correct 

 :: ponse cons s s ;„ taking the boxes and heftmg them one 

 ler the other in the same hand, or at the --yi^U To 

 hands, and pointing out the box wh.ch -';'gh^ ^^ f ams^ lo 

 make sure that the choice is not the result °f hanc^> t^^^ '^° 

 boxes of 6 and 15 grams are then presented, then the hrst 

 two boxes are again used and the results -^-^^^'f^^^'^^^l 

 remains the least doubt, repeat the test. A very yo""g ^^'^'1 

 behaves differently. When asked the question, he ■'"ponas 

 a once by pointing, quite at random, at a box, without thmk- 

 f yJhTn^it We overlook this naive error, which may 

 ir:i::f.re:ia- led-by thoughtlessness and sometimes 

 by suggestibility or a desire to please us, and «e say to 



