Can non-verbal communication in interpersonal relationships be taught rather than acquired?
Can non-verbal communication in interpersonal relationships be taught rather than acquired? In many ways this question answers itself. As an acquired skill is one that is learnt, and by definition, anything that can be learnt can be taught.

As with many skills, non-verbal communication begins in childhood. 


  It is concluded that style of expression and skill in communication
  are influenced by the emotional expressiveness of the family
  environment.


Family socialization of emotional expression and nonverbal communication styles and skills.
Halberstadt, Amy G.
Journal of Personality and Social Psychology, Vol 51(4), Oct 1986, 827-836

Unlike, many, subconscious difficulties of the mind, learning to read body language can be practiced and improved. A simple google search reveals some of the books and online resources to teach people to improve these skills.

This article discusses the formal study of  improving the  non-verbal communication skills to children with deficiencies in this area.

Teaching Approach for Developing Nonverbal Communication Skills in Students with Social Perception Deficits
Part I. The Basic Approach and Body Language Clues
Esther H. Minskoff, PhD