APPENDIX 
409 
Description: See sample test. 
Instructions: “On the other side of this sheet (pointing to test 
sheet) you will find some simple arithmetic examples in 
addition, subtraction, multiplication, and division. Be 
sure to notice all decimal points. Go down each column 
doing each example quickly and accurately. All right? 
Start.” Allow 300 seconds as a maximum time. 
Corrections: A key with the correct answers should be in readi 
ness. Examples have the following values: addition, 1 each; 
subtraction, 1; decimal point wrong or omitted, 1; multipli 
cation and division, 5 if the decimal point is right, 6 if it 
is wrong. Total value of test, 64 units. 
Record: Number of seconds taken, number of possible points 
(64), minus number of points lost. E. g., 10; 250 secs., 
64 - 8. 
Rating: Apply formula II. Point of reference, the perfect 
completion of 64 units in 240 seconds. RU, 64, total num 
ber of reference units in test; Ru, reference time per unit 
which is 240 -f- 64 or 3.75; E, errors or omissions; T, time 
. . . , , RuXRU-E 
taken. Applying formula = = r to sample 
record above we have, 
3-75 X (64 - 8) 
250 
= .84 
12. Card Sorting (complex) 
Description: (1) 50 cards, 2” X 3" X .03”, stiff cardboard, with 
seven black letters posted promiscuously on each one. The 
cards are numbered and marked on the back so that the 
examiner can sort them after every trial into their exact 
original order and at the same time count all mistakes. 
(2) A sample set of eight cards, for preliminary trial. (3) 
A plain square cardboard, 12” X 12”, with X — K printed 
in one corner, X — Y in another, 5 — 6 in the third, and 
others in the fourth. 
Instructions: Place the cardboard in front of subject. “I wish