Oliver Burkeman's column in The Guardian this week discusses brainwashing and cults. "Brainwashing" doesn't exist, but "effort justification" does - the tendency to attribute a greater value (greater than the objective value) to an outcome effort has been put into acquiring or achieving.
Effort justification applies to a lot of activities which take place in and around education. Over-attributing value to fetishes such as collaboration, team work, and social media is an example of this. One of the main reasons I'm currently trying to shift my emphasis from social media to a dark social approach is that I have been guilty of effort justification in the past, and returning to a more evidence based rationale for dealing with students and colleagues is needed to re-establish more profitable outcomes.