A 'reflex' like tendency to reject opposing ideas to what you believe.
We have a feeling of dislike and competitiveness towards people who we think are better than us.
Social identity is the part of a person's self-concept that is made from their membership in a social group.
Reactance is the resistance we feel when there is a threat to our behavioural freedom.
We overestimate our ability to control impulsive behaviour.
We believe that proverbs, sayings etc. are more accurate if it rhymes.
We adjust behaviour according to perceived risk - we are more risk taking when we feel protected, and more careful when we sense greater risk.
We judge past events more positively than we do the present.
More significance is given to a recent event/data/evidence when compared to past events/data/evidence.
Tendency to devalue ideas/proposals that comes from an 'enemy'.