Eight questions at Wonderlic pace
Original practice items in the same mixed style (words, numbers, logic), written for this page. You get 14 seconds each, the average time per item on the real test. Not scored as IQ: it's a feel for the speed.
Where the folk formula comes from, and where it drifts
If Wonderlic scores have SD 7.5 and IQ has SD 15, each Wonderlic point is worth 2 IQ points. Popular accounts describe 20 as the average score, which gives exactly IQ = 2W + 60; older publisher norms quoted near 21 give 2W + 58. The SD of 7.5 is as commonly cited and not yet checked against the publisher manual. The lines are parallel, two points apart.
The bigger issue is the reference group. Wonderlic norms come from job applicants and employees, not the whole population, and the hard 50 ceiling means no score can map above about IQ 160.
A 1918 school test, cut down for the hiring office
- Wonderlic, E. F. (1992). Wonderlic Personnel Test & Scholastic Level Exam: User's Manual. Wonderlic, Inc.
- Dodrill, C. B. (1981). An economical method for the evaluation of general intelligence in adults. Journal of Consulting and Clinical Psychology, 49(5), 668–673. Wonderlic vs WAIS correlations.
- Otis, A. S. (1918). An absolute point scale for the group measurement of intelligence. Journal of Educational Psychology, 9(5), 239–261.
- Lyons, B. D., Hoffman, B. J., & Michel, J. W. (2009). Not much more than g? An examination of the impact of intelligence on NFL performance. Human Performance, 22(3), 225–245.