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Clear and consistent gender differences favoring males exist for some spatial skills such as mental rotation (the ability to visualize how an object would look if you viewed it from a different angle).

Differences in these areas emerge at around 9 to 13 years and widen throughout adolescence.

Boys are more likely to handle a new object physically; girls are more likely to use visual exploration, looking carefully at a novel object without actually touching it.

Interestingly, male and female infants show different reactions when left alone to explore.

One comprehensive review found that of the 124 meta-analyses included (which represented over 7,000 individual research reports investigating a wide range of cognitive, social, and personality variables), 78% showed small or close-to-zero effect sizes—this indicates few statistical differences between males and females in these studies (Hyde, 2005, 2006).

For some variables, context affects whether gender differences were found.

They are more likely to engage in outdoor play, rough play, and activities that cover large areas of physical space (Eaton & Enns, 1986; Lindsey, Mize, & Pettit, 1997; Maccoby, 1998).

Girls, on the other hand, perform better on tasks involving flexibility and fine-motor coordination. Both girl and boy infants explore new objects, but they tend to use different strategies for doing so.

Prevailing stereotypes in Western cultures portray boys as more active and aggressive and girls as more emotional and helpful.Like the verbal skills we discussed above, gender differences in mental rotation have remained stable over the last few decades (Masters & Sanders, 1993; Voyer, Voyer, & Bryden, 1995).Is it true that boys are better than girls in mathematics, as so many people seem to believe?On national assessments of 4th, 8th, and 12th graders, however, math gender differences have decreased since the early 1980s.The most recent national assessment shows small differences for all grade levels (2 point differences at each grade level, out of 500 points for 4th and 8th graders and out of 300 points for 12th graders) (Byrnes, 2001; Grigg, Donahue, & Dion, 2007; Perie, Grigg, & Dion, 2005).




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