I am writing a research paper on the implementation of school-based professional development in my country. For quite a time I have struggled with developing the right theoretical framework to analyse the construct "continuous professional development:. I cant figure whether PD is a process, activity, a goal or an outcome. I was considering "socio-cultural perspective", "situated perspective" and "activity theory", they are so confusing. Should I pick one of these or find something else? Which would be more applicable? Please advise.