APPENDIX 
4°3 
Description: Woodworth-Wells. See accompanying sample. 
Instructions: Show applicant a sample slip containing the 
following line and nothing else. 
5213689687341880657273652098443968425721073264814 
“I want you to cross out every ‘7’ on this slip with a quick 
dash like this.” (Examiner makes a short dash, “ — ”, 
through the first “7” and lets subject finish the line.) 
“Now do the same thing on this entire sheet (showing the 
test sheet). Begin at the top line and go across each one, 
crossing out every ‘ 7Do this quickly and carefully. All 
right? Start” (allow 100 seconds). “Stop now, please.” 
Record: Record number of test, the time (in this case always 
100 seconds), the number of “7V’ covered (there are 100 on 
the sheet), and the number skipped. E. g., 6; 100 secs., 
80 — 2. 
Rating: Reference points, 100 “7’s” crossed off in 100 seconds; 
RU, or reference units, 100; N, number of units or “7’s” 
covered by subject; E, errors, to be counted double; r, 
rating. Applying formula I, 
record given above, we have 
N - E 
RU 
80 — 4 
= r, to the sample 
= .76. 
100