<P>Albert Bandura is the most cited living psychologist, and is regularly named as one of the most influential figures ever to have worked in his field. Much of his reputation stems from the theories and experiments described in his 1973 study <EM>Aggression: A Social Learning Analysis</EM> ¿ a book that is both a classic of psychological study and a masterclass in the analytical skills central to good critical thinking. Bandura¿s central contention is that much human learning is fundamentally social. As children imitate the behavior of those around them, and as their behaviors are reinforced by modelling, they entrench cognitive functions that more or less become part of their core personalities. </P><P>The experiments that Bandura designed in order to prove his contentions with regard to learned aggressive tendencies show the powers of critical thinking analysis and evaluation at their best. Having set up a play environment for children in which they could be exposed to aggress