[1] Jackson created numerous tests in his life, including: These were distributed through two companies he founded, Research Psychologists Press and Sigma Assessment Systems.
[2][3] Jackson served on the Executive Council of the International Test Commission and was a Fellow of the Royal Society of Canada (1989).
He was president of the Society of Multivariate Experimental Research from 1975–1976 and received their Saul Sells Award for Lifetime Contributions in 1997.
In 1994 he was one of 52 signatories on "Mainstream Science on Intelligence," an editorial written by Linda Gottfredson and published in The Wall Street Journal, which declared the consensus of the signing scholars on issues related to the controversy about intelligence research that followed the publication of the book The Bell Curve.
[4] Colleague J. Philippe Rushton noted that Jackson's founding of Canada's Society for Academic Freedom and Scholarship was a response to "Canadian researchers challenged by 'political correctness'" and "demonstrated his personal commitment to ensuring personal liberty and freedom of enquiry for his colleagues.