Albert Meharabian, a researcher, discovered that words alone account for just seven percent of any message's impact. Vocal tones account for 38 percent of the impact and facial expressions account for 55 percent of the message. Thus, project managers should use nonverbal ingredients to complement verbal message ingredients whenever possible and should recognize that nonverbal factors generally have more influence on the total impact of a message than verbal factors. The lack of nonverbal cues makes project communications in a virtual environment more challenging.