Autism implies difficulties in social communication and social interactions that manifest in the form of disadvantaged socio-emotional reciprocity (e.g. atypical social approaches, failure to maintain conversations, reduced sharing of interests and emotions, reduced initiation of conversations and reduced social imitation), non-verbal communicative deficiencies (e.g. inadequate use of eye contact, body posture, atypicality in intonation, rhythm and speech volume), difficulties in the development, maintenance and understanding of relationships suitable for a specific developmental age (e.g. difficulties in adapting behaviour to different social contexts) difficulties in sharing in imaginary games, making friends and the presence of limited repetitive behaviours that manifest themselves in at least two of the following forms:
Stereotypical or repetitive motions, use of objects or speech (e.g. motor stereotypes, repetitive use of objects and echolalia (repetition of other people’s statements)),
Excessive adherence to routines, ritualised forms of behaviour and excessive resistance to change,
Limited interests that are atypical in terms of their intensity and orientation (e.g. preoccupations with numbers or letters or a focus on a group of subjects, topics or activities), or
Hyper or hypo-reactiveness to sensory inputs or unusual interests in sensory aspects or surroundings (e.g. a preoccupation with textural subjects, a high-tolerance to pain or an aversion to human contact).