Why do evaluators face a dilemma in addressing scientific and responsive- ness requirements? What are three strategies to address the dilemma?  Which strategy would you take? Why? What is the...

Why do evaluators face a dilemma in addressing scientific and responsive- ness requirements? What are three strategies to address the dilemma?  Which strategy would you take? Why?

What is the integrated evaluation perspective? What are the challenges  faced by this perspective?