India, May 7 -- An international team of researchers from Germany, the Netherlands, and Greece found that people who are left-handed or use both hands (mixed-handed) are more likely to have certain conditions that start early in life and affect language skills. These include dyslexia, schizophrenia, and autism, as per the study published in the journal Psychological Bulletin.
The researchers looked at data from 402 studies, combining results from ten earlier reviews. This helped them spot patterns that were hard to see when looking at each condition separately.
They found three things that are linked to higher rates of left- or mixed-handedness - brain conditions that develop early, disorders that begin in childhood, and problems that aff...