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Panizzon, Matthew S.; Vuoksimaa, Eero; Spoon, Kelly M.; Jacobson, Kristen C.; Lyons, Michael J.; Franz, Carol E.; Xian, Hong; Vasilopoulos, Terrie; Kremen, William S. . (2014). Genetic and environmental influences on general cognitive ability: Is g a valid latent construct?. Intelligence, 43(), 65–76. doi:10.1016/j.intell.2014.01.008 
10.1016/j.intell.2014.01.008