 Thompson co-authored a widely cited twin study on communication disorders which found higher concordance in monozygotic twins than dizygotic twins.In 1994 she 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 race and intelligence following the publication of the book "The Bell Curve".Thompson has published studies with other signatories, including Douglas Detterman, Robert Plomin, and David Lubinski.