 Dr Burrows was further reported to have expressed concern after directly inquiring with Barbara Arrowsmith for evidence and learning that neuroscientists were not involved with the Arrowsmith Program.In Canada, neuroscientist Adele Diamond and cognitive psychologist Linda Siegel—both based at the University of British Columbia in Vancouver—have expressed concerns similar to those of Castles and Coltheart.Both appeared in the 2008 a CBC documentary about the Arrowsmith program.