Iwould like to thank everyone who helped in the writing of this book, especially Tobias Nordqvist, who read several early drafts and who was an invaluable sounding board in its presentation. Thanks to Jenny Toll and Theres Lagerlöf, who helped with the editing, and to Ingvar Lundberg and Mats Myrberg for their comments on the chapter on dyscalculia and dyslexia. Tores Theorell reviewed the chapter on stress and Barbro Johansson the chapter on the effects of the early environment. Thanks also to Stina Söderqvist, who helped me with the figures and literature searches on the effects of exercise, and to Hugo Lagercrantz, Åsa Nilsonne, and Jenny Jägerfeldt for their general comments.
Much of the research described in this book has been financed by a grant from the Knut and Alice Wallenberg Foundation (“Learning and Memory in Children and Young Adults”), the Swedish Riksbank Jubilee Fund, and the Swedish Research Council. The studies were coordinated by Jens Gisselgård, Ylva Samuelsson, and Douglas Sjövall. I am grateful to the Swedish Brain Fund for the help and support they give to child brain research in Sweden, and to the Swedish Foundation for Strategic Research (SSF), which generously funds our research. Finally, a big thanks to all the children, parents, and teachers in Nynäshamn, without whom none of our studies would have been possible.