Why is IAB ranked so well in the Handelsblatt ranking? Wasn't there a time when Ifo, DIW or ZEW were the places to be?Ifo's research output is mostly reflected in LMU's score. Still, I guess that research at IAB has improved due to international collaborations.
I would even say that research at IAB has generally improved.
Plus, IAB seems huge in comparison with the other institutes. As the institute ranking does only add up points, this matters.