Here's a corrected version of the graph of intelligence vs. age and IQ from my last post: Rasch measure Intelligence vs Age.pdf [Google Drive, single-page PDF (71kB)]. The standard deviation for age 5 was a bit too low in the earlier version. I updated the PDF file linked there as well.

Woodcock-Johnson IV Absolute General Intellectual Ability by Age and IQ Score

Enon Harris 2022

 

 

Here's a guide to how the "W-score" measure of intelligence, which is "absolute", in the sense it can be compared across different ages, converts to adult IQ levels, and to percentile scores for different occupations. This was adapted from this chart on iqcomparisonsite.com

It says on the source site: 

This graph was adapted from Figure 12 of Hauser, Robert M. 2002. "Meritocracy, cognitive ability, and the sources of occupational success." CDE Working Paper 98-07 (rev). Center for Demography and Ecology, The University of Wisconsin-Madison, Madison, Wisconsin. The figure is labelled "Wisconsin Men's Henmon-Nelson IQ Distributions for 1992-94 Occupation Groups with 30 Cases or More"

The author of iqcomparisonsite, Rodrigo de la Jara, used it with permission, but I didn't; he has copyright to this image and I don't. A link to a PDF of the referenced paper is given at iqcomparisonsite (see link above).