"Personality theory and social psychology research suggest that when we encounter someone whose arguments for censorship are dogmatic and simplistic, we are probably dealing with an authoritarian personality who is reacting to something he/she fears. Authoritarian personalities are characterized by a strong desire to exert power, an equally strong need to submit to power (often the power of a social, political or religious group), resentment of weakness, fear of ambiguous situations, and an unusual fascination with sex. Authoritarian personalities are highly moralistic, exhibiting a 'conventional' level of morality on Kohlberg's scale of moral development (minor rules and social respectability are placed above principles such as equality, freedom of expression, and human rights). Any information which is contrary to their (or their group's) beliefs, stereotypes and rationalizations is perceived as a threat. [...] Censorship is more strongly motivated by the fear of losing control over children than a concern for their moral development, and books which portray young people who defy parental values may especially outrage authoritarian personalities." -- from the abstract for "How the Mind of a Censor Works: The Psychology of Censorship", by Dr. Sara Fine, School Library Journal 42 no. 1 (January, 1996): 23-27. [I was not able to find the complete paper online, only the abstract. I'll try to remember to see whether I can find it in a public library the next time I find myself near one.]