Our Specialisms

Download our Social Communication Disorder Information Sheet here.


Social Communication Disorder (SCD), also known as Semantic Pragmatic Disorder (SPD), is a life-long condition that makes communicating with other people difficult. It presents in areas of vocalisation and processing language rather than a speech impediment or through a struggle with the mechanics of language (i.e. grammar).


Semantics refers to the meaning behind words, mainly logical and lexical semantics. Logical semantics is the branch of linguistics that is concerned with sense, reference and implication, whilst lexical semantics is the analysis of a words meaning and relationships between those words. In essence, semantics are the signs and signals of our vocal communication.


Pragmatism is the meaning behind sensibly and realistically dealing with things and in this context, understanding and processing words practically.


Combining the two – you get SCD, a condition that causes issues with communicating in a socially appropriate way. Those with the condition may not follow the unwritten rules of language, often not understanding sarcasm or non-literal language.


In some ways, SCD is similar to Autism Spectrum Disorder (ASD) when it comes to communication difficulty. All those with Autism will have difficulties with the semantics of language, however, those with SCD may not present the same ritualistic behaviours associated with Autism.


Differences in Social Communication Disorder and Autism Spectrum Disorder


Social communication difficulties are a significant factor in diagnosing Autism, however SCD can be present in those who would otherwise not meet the criteria of an Autism diagnosis. As the two conditions do share similarities, it’s important to rule out Autism first, as this will affect the overall treatment for the individual.


SCD treatment can focus more heavily on developing communication skills. Social interaction requires some level of encouragement, both in and outside educational settings. Family members can develop their skills, and communicate with different professionals on the best way to help engage the child, on an case-by-case basis.

Specialised schooling can be a great help in this regard.


What causes Social Communication Disorder?

It is not known whether SCD has a cause but is widely speculated to originate from birth. It is often considered to have hereditary connections; that being, it is passed on through genetics. There is on-going research into many different potential causes of SCD as a whole, surrounding brain disorders, dietary allergies and more.

How does Social Communication Disorder affect day-to-day life?


Those with SCD can behave differently in different environments including at home and school. With this in mind, it’s always a good idea to have parents and teachers keeping an eye on behaviour and as such, their concerns should be taken seriously. This will usually come in the form of behavioural observation. As SCD is a communication disorder, these behavioural differences may not be noticed until an age when the child can communicate more frequently. SCD is often diagnosed when other conditions, like ASD and deafness, have been ruled out. This means there is no specific behaviours to look out for, however, deficits in social interaction, social cognition and other language difficulties may be signs that can help get a diagnosis.


As a whole, humans are constantly absorbing information, processing it and then discarding what isn’t relevant and storing that which is; through our memory. From a language standpoint, we build a bank of words and meanings to help us navigate the complexities of conversation. This is where someone with SCD may have to use techniques to aid them in their understanding.


As an example – imagine not fully understanding our timing words or tenses – and think about how difficult it might be to understand someone’s intent:


A: I was at the shop

B: I am at the shop

C: I will be at the shop


When we speak to someone, we use our past experiences to interpret their intentions and their wants and we anticipate what might happen next. People who have difficulties with this form of processing will have problems with determining appropriate responses. They may appear rude or outspoken and be unaware when the other person wants to end the conversation.


Those with SCD may also struggle with less specific wording:


“Pass me that blue pen.”


“What have you been up to today?”


We may see these as fairly easy to understand and respond to, but one of these sentences is a specific instruction, whilst one is largely vague.


Early indicators of Social Communication Disorder in children


When talking, they may:

• Sound very grown-up
• Speak fluently, but on their terms
• Have difficulty giving specific information on one event
• Give no appropriate eye contact/facial expression exchange


In learning, they may:

• Have problems with abstract concepts (“next week”; “guess what”)
• Be late or very early readers, but show little understanding
• Have some motor skills problems (writing, drawing, bike riding, dressing, football)
• Be easily distracted in a busy environment
• Struggle with team events and games


Behaviourally, they may:


• Appear rude or arrogant
• Embarrass others
• Be over-active or too passive
• Insist on following rules and expect others to do so too
• Be isolated – those with SCD won’t ask other children to play with them, or be over-friendly


Other possible features may include:

• Dislike of crowds
• Food fads
• Problems with social events (school breaks, parties)
• Over-sensitive to some noises or tastes


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