Lack of empathy or respect for differences
Loud, uncomfortable and public environment for communication
Adaptation for communication needs (interpreter, visual aids etc)
Lack of eye contact, hostile body language
Lack of problem solving for special communication needs or specific health conditions
Finding a private, quiet and well-lit environment
Making assumptions of what the other person understands
Giving good eye contact
Talking in words that the other person understands
Being empathetic and respectful
Active listening
Jargon, slang and acronyms
