I am working on general psychology credit by assessment; I have to answer; 1. How do psychological principles affect the study of the behavior of

I am working on general psychology credit by assessment; I have to answer; 1. How do psychological principles affect the study of the behavior of individuals and groups?

1. What parameters of behavioral deviance and its various therapies? 3. How do psychological principles affect study of individual differences? 4. Explain role of psychology in such areas as industry, complex organizations, law, and education.

I am having difficulty finding any clear research?