“…Similar findings and support for the unitary dimension of the Grasmick et al (1993) scale were given by a number of other researchers (e.g., Burton, Evans, Cullen, Olivares, & Dunaway, 1999;Gibbs, Giever, & Higgins, 2003;LaGrange & Silverman, 1999;Nagin & Paternoster, 1993;Piquero, MacIntosh, & Hickman, 2000;Romero, Gomez-Fraguela, Luengo, & Sobral, 2003;Wood, Pfefferbaum, & Arneklev, 1993). The extent of the evidence was such that it became accepted practice to aggregate the scores into a composite measure of self-control (e.g., Blackwell & Piquero, 2005;Burton, Cullen, Evans, Alarid, & Dunaway, 1998;Deng, 1994;Longshore, 1998).…”