“…One prominent finding from expertise research is that expert chess players tend to have an above average IQ (e.g., Frydman & Lynn, 1992;Horgan & Morgan, 1990), but that within chess expertise levels there is little relation between chess performance and intelligence (e.g., Doll & Mayr, 1987;Grabner, Neubauer, & Stern, 2006;Unterrainer, Kaller, Halsband, & Rahm, 2006;Waters, Gobet, & Leyden, 2002). This discrepancy is the content of our study (De Bruin, Kok, Leppink, & Camp, in press) and the core of our reply.…”