Does degree of gyrification underlie the phenotypic and genetic associations between cortical surface area and cognitive ability?

Docherty AR, Hagler DJ Jr, Panizzon MS, Neale MC, Eyler LT, Fennema-Notestine C, Franz CE, Jak A, Lyons MJ, Rinker DA, Thompson WK, Tsuang MT, Dale AM, Kremen WS.