Almost all left-handed people experienced problems in everyday lives related to work and relations purely because of their left-
handedness. Sometimes people around them appeared to turn their back on them.
Handedness as a function of twinning, age and sex, Cortex, 30 (1): 105-111.
Handedness has been assumed to have some relationship with the creativity (Stewart and Clayson, 1980) as left handers tend to be higher on intellectual (Ghayas and Adil, 2007) and creative abilities.
When the entire room is standardized, including
handedness, it is reasonable to say that standardization and same-handedness are essentially the same.
Findings from
handedness research indicated that left-handed individuals (relative to right-handed individuals) had more divergent thought processes (Coren, 1995) and were more emotionally expressive (Jackson, 2005).
Handedness, footedness, eyedness and eardness are the peripheral indicators of hemispheric lateralization.
Two to 30% of any human population is left-handed or ambidextrous, with most estimates hovering around 10%, depending upon the criteria used to assess
handedness." Interesting facts and odd lefty superstitions: Left-handers adjust more readily to seeing underwater
Handedness was determined in the study by asking the person whether or not they considered themselves right handed or left handed and by observing the dominant hand used when writing and engaged in other tasks involving pencil use.
What are lefties' perceptions of their
handedness and their thoughts on the accommodations they need to make in school?
The term 'ambiguous'
handedness was suggested for changes of hand between trials of the same task (Soper & Satz, 1984).
Explaining the medical aspect of
handedness, Dr Jaju points out that the brain is divided into two hemispheres, one of which is always dominant and which controls motor skills.
"We think breastfeeding optimises the process the brain undergoes when solidifying
handedness," said Philippe Hujoel, the study's author.