Component 1: Physiological factors - The purpose of this component is to give a solid grounding in some of the basic core aspects of psychology. The intention therefore is to allow the learner, through the study of classic research, to gain an appreciation that psychology continues to develop and evolve. Component 2: Psychology past to present - The central aspect of this component is that of psychological research, from the initial planning stages through to analysing and evaluating. It is designed to introduce learners to the methodologies used by psychologists and to gain an appreciation of the impact of choices made on the outcomes of the research. Learners should appreciate the limitations of scientific research and when dealing with the complexities of humans as test material, there are several issues which need to be considered. Component 3: Investigating Behaviour - Having learnt about the various psychological approaches in Component 1, learners are expected to apply this knowledge and understanding to human/animal behaviours. Learners should be able to explain and draw conclusions about the possible causes of these behaviours and understand that psychology has the potential to impact society as a whole by developing methods of modifying behaviour.