“…Some exceptions to this are the finding that the general factor is positively related to self-esteem and supervisor-rated job performance (Erdle, Irwing, Rushton, Park, 2010; van der Linden et al, 2010). Similar to Stability and Plasticity, the general factor has been linked with reinforcement sensitivity theory in an effort to provide a biological understanding of why individual differences in the construct exist (Erdle & Rushton, 2010). Much research remains as to whether these findings are merely measurement artifacts (Bäckström, Björklund, & Larsson, 2009; Erdle, Gosling, & Potter, 2009; McCrae et al, 2008), are extensively hindering theoretical development (Ferguson, Chamorro-Premuzic, Pickering, & Weiss, 2011), or are better represented by parsimonious blended traits instead of postulating higher-order factors (Ashton, Lee, Goldberg, & de Vries, 2009).…”