Braille was developed by Louis Braille in the 1820s when he was a pupil at the Royal Institute for Blind Youth in Paris. Before he developed his revolutionary code, various systems mostly using raised...
Tourette syndrome
Tics can also involve movement (motor tics) or sounds (vocal tics). Motor tics usually begin before vocal tics do. But the spectrum of tics that people experience is diverse...
Picture Exchange Communication System (PECS)
PECS is a highly structured system and its effectiveness and efficacy is based on consistent use of the system. Almost anyone can implement PECs, however they need to receive PECS training. Professionals, parents, careers, teachers,...