Instruction:
What can a work group do to promote psychological safety?

Response:
Respect personal time by not sending slack messages or meeting invites when the teammate is away.
Ask for detailed and specific feedback.
Assume positive intent.
Over-include people and respect when they want or need to step back.
Clarify roles on projects. 
If you need someone to take on an action item, ask for it.
See to create a culture of collaboration