| Indicative intentional gestures |
| Point |
Pattern of movement where the arm, forearm and hand is moved in a linear path which appears to be aimed at specific distal target or a lexigram using both extended index finger and open hand; includes touching a lexigram on keyboard |
| Non-indicative intentional gestures |
| Manual shake |
Subject shakes one or both hands or arms repeatedly with either rapid or slower movements |
| Bob |
Subject bobs and weaves with head or whole body in a bowing position upwards or forwards |
| Unintentional behaviour |
| Rock |
Subject stands or sits and rocks their body from side to side, or from forwards to backwards |
| Scratch |
Subject uses fingers to repeatedly rake through own hair and skin |
| Vocalisation |
Subject makes a sound with the vocal tract |
