Sex differences in mental abilities: g masks the dimensions on which they lie

The role of gender, task success probability estimation and scores as predictors of the domain-masculine intelligence type (DMIQ)

“…Equally, contrary to some assertions (Ehrlinger & Dunning, 2003;Johnson & Bouchard, 2007;Kruger & Dunning, 1999), the results demonstrated that individuals were capable of making accurate selfestimates that match their confidence levels. Likewise, the existence of the hubris-humility effect, and in particular of the male hubris, was established in the pre-and post-task conditions.…”

Gender Differences in Cognitive Abilites

“…Gur et al (2000) found gender differences in brain activation patterns in response to a judgment of line orientation task, with males showing right-lateralized increased in activation compared to female, whereas study cited by Speck et al (2000) reveled greater activation in the left hemisphere in female, while males showed either bilateral activation. Study cited by Johnson and Bouchard (2007) showed that women displaying generally greater memory than male. On the other hand Voyer et al (2007) indicted that Females are somewhat more accurate in specific areas such as Memory for object locations in adolescent and adult samples, whereas other indicated that men tend to be more accurate in memory for visuospatial stimuli that are highly complex (Lewin et al, 2001).…”

Social fishes and single mothers: brain evolution in African cichlids

“…A species' habitat also poses specific cognitive challenges related to either navigation or spatial orientation (Salas et al 2003;Safi & Dechmann 2005;Pollen et al 2007;Yopak et al 2007). Such ecological factors are generally expected to impose similar selective pressures on both sexes ( Lande 1980), although divergent pressures on males and females can result from differences in feeding habits or spatial segregation, or as a result of sexual selection leading to sexual dimorphism in neural structures and cognitive abilities ( Jacobs 1996;Jones & Healy 2006;Johnson & Bouchard 2007). Factors such as parental care or sexual selection possibly impose different selection pressures on males and females leading to neural dimorphism (Gittleman 1994;Garamszegi et al 2005b), but to be able to identify sex-specific selection pressures influencing brain evolution, analyses must necessarily involve sexually mature, sexed individuals ( Healy & Rowe 2007).…”