3. Lefties have reverse brains 

Most of the right-handed population uses the left half of their brains to process language. The number of such people is 98%. This does not necessarily mean that most of the left-handed population uses their right hemisphere for the same purposes. It is just another myth to dispel, since their number is only 30%. About 70% of lefties use their left half to process languages. Scientists do not have enough proof to tell exactly whether the situation is the same when it comes to other one-sided brain functions, for instance, emotion, attention or face perception. Currently, it’s known that left-handed folks do not differ too much from right-handers.

4. School performance can be affected 

In 2009 Australian researches carried out an experiment. The studies involved left-handed children who were 11 years old or younger. During the test it was revealed that left-handers performed worse than righties in writing and reading. They also had weaker social development and vocabulary. The most negative results were those of mixed-handers. The two groups (left- and right-handed alike) tend to use both hemispheres of their brains in an unusual way. This might be the main cause of their learning disabilities. Additionally, mixed-handed kids have another learning condition that makes it difficult for them to decide which hand they should write with. Luckily, the older left- and mixed-handers get, the less obvious those issues are.