1) The document discusses concepts from social psychology including confirmation bias, first impressions, non-verbal cues, impression management, and stereotypes as they relate to interactions between lecturers and students.
2) It provides examples of how confirmation bias can lead lecturers and students to only hear information that agrees with their own beliefs.
3) First impressions are formed within 0.1 seconds based on appearance alone and can influence later perceptions of a person. Both lecturers and students are shown to make judgments based on first impressions.
4) Non-verbal cues like body language and facial expressions unconsciously convey people's thoughts and reactions without words. The document examines non-verbal cues in lecturers and students.