discussion response

Please answer each of these questions in your discussion response. Your total response should be at least 250 words and should answer ALL of the following questions. Each of these five questions should be at least one separate paragraph. You should also include at least one in-text citation from class learning resources with an associated reference. Please follow APA style with your in-text citations and your list of references. 

What is a scientific theory? Please cite a definition that you like.
What is the difference between a scientific theory and common sense ideas about the same topic (for example, why a child seeks a bottle at birth)?
Determine at least one thing that distinguishes a developmental theory from other theories about people?
How could a good developmental theory be valuable for social policy and your own life?
What major issue(s) in developmental theory do you feel is(are) most important and why?