Question

5) The analysis that an effective communication constitutes 7% verbal, 38% vocal and 55% non-verbal signs was given by
Ray Birdwhistell
Mehrabian​

Answer 1

Explanation:

The rule states that 7 percent of meaning is communicated through spoken word, 38 percent through tone of voice, and 55 percent through body language. It was developed by psychology professor Albert Mehrabian at the University of California, Los Angeles, who laid out the concept in his 1971 book Silent Messages (1971).