The Google Map presented here shows the approximate position of the laboratory:

More detailed information about how to find the laboratory is described below:

By train:
A train station is located in the centre of Louvain-la-Neuve. The station is situated on the Brussels-Ottignies-Namur-Luxembourg train line. The trains run approximately every half hour in both directions, and from Brussels, the journey takes about 40 minutes. On most trains, you will need change at the Ottignies station for another train to continue to Louvain-la-Neuve-Université (about 8 min.). Timetables are available on the web site of the SNCB.

By car:
Take the E411 motorway, either in the direction from Brussels to Namur or Namur to Brussels. Take the exit marked 8a "Louvain-la-Neuve" and follow the exit to the roundabout on the National 4 road. Go straight across, following signs for Louvain-la-Neuve. Follow signs for the Grand-Place car park (situated under-ground). 

In Louvain-la-Neuve:
From the Grand-Place, go to Place Cardinal Mercier. This is the north-west corner, to the right side of the library (the building with a clock). On Place Cardinal Mercier, enter the building through the right most door with the label ‘Socrates’. Just inside the entrance, there is a reception, and a lift. Go to floor 3. The offices for the Psy-NAPS group are in the area of C311.