Evolution: the changes in behaviour that accumulate across generations are stored in the genes. Learning o process by which experience produces a relatively enduring change in an organism"s behaviour or capabilities: the changes in behaviour that accumulate over a lifetime are stored in the central nervous system. Behaviourists focus on how organisms learn, examining the processes by which the experience influences behaviour: argued that unobservable phenomenon aren"t necessary for an understanding of human nature, knowledge is learned. Ethology focuses on the functions of behaviour o. Adaptive significance how behaviour influences an organism"s chances for survival o. Fixed action pattern unlearned response automatically triggered by a particular stimulus. Environment shapes behaviour in two fundamental ways: o. Personal adaptation (behaviorists) behaviour is influenced by immediate environment and by capabilities that have been acquired through experience o. Species adaptation (ethology) genetically based features that enhance a species" ability to adapt to the environment are more likely to be passed on to future generations.