cautions that preferred hand is not always a good guide to the dominant hemisphere. In most people, a dominant (and faster) right hand implies a dominant left hemisphere. However, he found that a minority (20%-25%) of right-handed people actually had a dominant right hemisphere, and that reaction time on the right side of the body was slower in these people because commands had to originate in the right hemisphere and then cross over to the left hemisphere, and then get to the right hand. In other words, the side of the body with the longer reaction time (not always the side with the nonpreferred hand) is the side with the dominant hemisphere. Bryden (2002), using right-handed people only, found that task difficulty did not affect the reaction time difference between the left and right hands. Miller and Van Nes (2007) found that responses involving both hands were faster when the stimulus was presented to both hemispheres of the brain simultaneously. Because the right (emotional) hemisphere is supplied with input by the left eye, it might be suspected that the left visual field would be the fastest at identifying emotions. Alves et al. (2009) confirmed that faces showing happiness or fear were identified most rapidly when presented to the left visual field (e.g., and examined by the right hemisphere), and that neutral expressions were detected most rapidly by the right visual field. Godard and Fiori (2010) found that men are just as accurate at face recognition as women, but that women were faster. They also found that men were more strongly "lateralized" than women, with dominance of the right cerebral hemisphere. Muscians appear to have hemispheres that are more equally capable of paying attention to stimuli than non-muscians, and to have faster reaction times as well