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Human behavior is dynamic; we are always moving, posturing, and changing facial expressions. While engaging in constant movement we communicate a myriad of messages, in totality called nonverbal communication. Nonverbal communication includes non-speech qualities of voice. It also subsumes body language.

Psychologists describe body language as the language of feelings because we are not always consciously aware of the signals we give out through our body language. Thus we may disguise our feelings with our words while our true feelings may slip out, if only for a moment, through our body language.

With our body language we convey emotions such as trust and openness but also fear and anger. We may emphasize a spoken word, such as raising a fist upward to indicate, ‘yes.’ We may express caring by a loving touch or hug.

We can only imagine how confusing these signals can be to children on the spectrum who struggle with or avoid sustained eye contact.

Children on the spectrum tend to face difficulty looking directly at others to make eye contact and thus they may miss subtle changes in another’s body language necessary for formulating an appropriate response. It is challenging for all of us to accurately decipher non-verbal messages in voice and facial expression and to respond appropriately to these nonverbal messages. We can only imagine how confusing these signals can be to children on the spectrum who struggle with or avoid sustained eye contact. And yet, the ability to interpret visual cues holds even more benefit for children on the spectrum because they are often visual learners.

All the more important when we consider the many ways that body language cues facilitate (or hinder) social communication. In a 2008 paper, The Importance of Effective Communication, Edward G. Wertheim distinguished between several of these nonverbal functions:

  1. Complement. Gestures, especially when repeated, may serve to enhance or strengthen our message, such as giving a high 5 when we congratulate children on a job well done.

  2. Substitution. Choosing body language over words is powerful in situations when words are just inadequate, such as when a child is experiencing strong emotions and not likely to process words. At times a caring hug or sympathetic look can convey our meaning far more effectively than mere words can express.

  3. Contradict. When our body language is at odds with our spoken words we may confuse the listener, for example, when we sigh deeply and close our eyes while verbalizing, “I’m not mad!” or shake our heads while verbalizing, “I’m so glad.”

In addition to mismatched nonverbal communication, psychologists consider cultural bound interpretations of gestures. Eye contact, defined as looking directly into another person’s eyes, may have different meanings depending on the child’s culture. While limited eye contact may indicate lack of confidence or lack of interest in Western culture, in many Asian, African and Latin American cultures, sporadic or brief eye contact is considered polite, even respectful. At times the interpretation of a gesture may be a matter of degree. Even in Western culture, for example, intense eye contact is reserved for situations involving familiarity.

No wonder children on the spectrum have difficulty understanding and responding to non-verbal cues. We all get confused at times! “Taken together, these difficulties affect the ability of children with ASD to interact with others, especially people their own age,” according to the National Institute of Deafness and Other Communication Disorders. It follows that helping children both interpret others’ nonverbal communication and express themselves nonverbally will help our children adapt socially and scholastically. As an added benefit, becoming experts in our child's body language will help us interpret our child’s nonverbal behavior, and thus enhance our understanding of our child. By analyzing each channel of communication we can better facilitate mutual understanding:

In addition to mismatched nonverbal communication, psychologists consider cultural bound interpretations of gestures.


Reading another’s facial expressions accurately makes it more likely that a child with ASD will show an understanding of the other’s emotional state. We can start by teaching them that certain facial expressions, such as a smile, have universal meaning. To take advantage of your child’s visual skills, teach facial expressions by pairing the emotion with a picture of someone’s facial expression conveying the emotion. With an older child, set the pictures in front of the child and ask them to identify the emotion based on the facial expression. Or show the picture, name the emotion, and have the child imitate the facial expression. Consider starting with simple line drawings that emphasize the emotion, moving on to cartoon pictures with exaggerated emotional expressions, and finally, more nuanced human faces.


Leaning forward conveys interest. Turning our back on someone, literally, may be interpreted as disrespectful. The best way to teach children good posture is to model standing tall and to provide plenty of exercise for strengthening muscles. And like the commercial says, discover the joy of movement! Give your little ones opportunities to move about between tasks. Alternate tasks requiring them to sit with tasks involving expenditure of energy.


Although lack of social interest is often a sign of ASD in young children, in other children you may see lack of interpersonal boundaries. Sometimes young children, including children on the spectrum, have to be taught to respect other’s needs for personal space.