In an interview Hattie puts it like that: “If a teacher is not perceived as credible, the students just turn off.”
Examples for teacher credibility: Earn trust by showing trust towards pupils. Appear highly organised in the presentation of the subject matter. Develop a powerful style of speaking that uses few verbal hesitancies such as “OK” or “you know”. Reduce distance between teachers and students by moving or moving away from barriers (e.g., desk, podiums). Source: cie.asu.edu
Teacher credibility, in Hattie's list of practices that affect student achievement, is “on the top of the list” of practices that can be applied by any teacher in the world (as compared to practices like drama programs, which don't apply to all of us) [1]. And that's why I'm telling you about it — every one of us can work on what follows. As Fisher, Frey, and Hattie explain, “The dynamic of teacher credibility is always at play.” [2]
So what does it take to have teacher credibility? Four things, according to Hattie: trust, competence, dynamism, and immediacy.