read article and the understand of this article

The article name is “Overeducation in the Labor market: a meta analysis.” by Wim Groot, Henriëtte Maassen van den Brink. April 2000

What are the major points/conclusions of the reading?
What is the contribution of the reading? Does it answer a new question? Does it provide a new or different answer on an older question?
How do the authors justify/argue for these major conclusions? With theory? Data? Both? What are the major pieces of their evidence/argument?
Do the conclusions follow from the evidence/argument?
Is there anything confusing to you about the article
How does this research article relate to the material we covered in class? Does it support the material? Contradict the material?

Need to include some knowledge about ec301 or ec labor market.

format :Double-spaced, 1 inch margins, a standard 12 pt font.