Pluralistic ignorance
In social psychology, pluralistic ignorance is a situation in which a majority of group members privately reject a norm, but go along with it because they incorrectly assume that most others accept it. This is also described as "no one believes, but everyone thinks that everyone believes". In short, pluralistic ignorance is a bias about a social group, held by the members of that social group.
Learning theory (education)
The existence of multiple intelligences is proposed by psychologist Howard Gardner, who suggests that different kinds of intelligence exists in human beings. It is a theory that has been fashionable in continuous professional development (CPD) training courses for teachers. However, the theory of multiple intelligences is often cited as an example of pseudoscience because it lacks empirical evidence or falsifiability.