From Professor Skeem: At the heart of your presentation are the references that you identify through your literature search. You are required to turn in an annotated bibliography in APA format that summarizes the key articles you rely upon to develop your presentation. You must have at least ten references in your bibliography. Of these, at least eight must be to original empirical articles (including meta-analyses) from the professional literature – not books, review chapters, popular press articles, the internet, etc.
If an article is relevant to your topic, it can be very helpful to see not just what they cited (references, bibliography) but future scholars who cited it. There are several different ways to do this, and the results will overlap -- no single method is comprehensive.
"The essential meaning of the term is that objective knowledge from scientific research including rigorous evaluation studies should occupy a central place in policy decision making. Seeking rigorous and reliable knowledge and promoting its utilization within the policy process are core features of an evidence-based policy approach." (From the International Encyclopedia of the Behavioral Social Sciences: Policy Analysis: Evidence-Based Policy-Making)
SAGE Research Methods states that an empirical study meets some or all of these criteria:
From the assignment: "The prototypic key source will describe the results of a research study (with introduction, method, results, and discussion sections) and will be published in a high profile general journal (e.g., Criminology, Psychological Bulletin) or specialty journal (e.g., Law & Human Behavior, Criminal Justice & Behavior, Psychology, Public Policy & Law)."