Discuss the pros and cons of selecting candidates based on their body language

Discuss the pros and cons of selecting candidates based on their body language.  Discuss the pros and cons of including a candidate's nonverbal communication including facial expressions, overall body posture, gestures, eye movements, and the use of space as criteria for selecting a candidate.   

 Research the term "Span of Control."  Discuss the pros and cons of a manager's narrow span of control and his/her wide span of control. Finally, discuss the pros and cons of the implications of why managers have their span of control.