variables when it comes to evaluating the teacher's effectiveness. Getzels and Jackson, with support from Wallen and Travers, expressed that the personality and patterns of teacher behavior and methods presented represent the main forces for the most significant variable in evaluating the teacher's effectiveness. Goffman explains that the receptivity of the audience is strongly influenced by the person introducing the lecture, the quality of the introduction, and the speaker's involuntary expressive behavior, which becomes a decisive factor in how the audience responds to the conveying information. One study which looked at the student perceptions of educators from 7th to 12th grade and reported that the students regarded “teacher charisma or popularity” as the most important characteristic when rating teachers. If the charisma or popularity of the teachers have such an effect on their effectiveness ratings by junior high and high school students, would the ratings be influenced in the same way with a group of well-trained professional educators in a learning situation? So what the authors were looking to see is that if a sufficiently impressive lecture was given, would it result in an experienced group of educators participating in a new learning situation feeling satisfied that they had learned from the lecture despite irrelevant, conflicting, and meaningless content conveyed by the lecturer. See also Albert Mehrabian Barnum effect Sokal affair TED Talks References External links The Legendary Dr Fox Lecture – Footage Found! Educational psychology