Introduction to Psychology
Psychology is the study of human behaviour, thoughts and emotions. Psychology in health and social organisations consists of various kids of theories and approaches for the treatment of patients. Some set of beliefs and behaviours are not good for human which leads to illness and other disorders. Psychiatrists analyse the lifestyles of people and their behaviour towards the problem and then try to recover them accordingly (Agarwal and Zeephongsekul, 2013). The present report consists of theories of lifespan development, social and biological factors of human behaviour, importance of social roles, psychological theories and principles affecting change. In the end, conclusion consists of the summary with key findings of the study.