Adorno concluded that people with authoritarian personalities were likely to categories people into "us" and "them" groups, seeing their own group as superior.
Therefore, the study indicated that individuals with a very strict upbringing by critical and harsh parents were most likely to develop an authoritarian personality.
Adorno believed that this was because the individual in question was not able to express hostility towards their parents (for being strict and critical)
Consequently, the person would then displace this aggression / hostility onto safer targets, namely those who are weaker, such as ethnic minorities.
Adorno et al. felt that authoritarian traits, as identified by the F-Scale, predispose some individuals towards 'fascistic' characteristics such as: