The role of the dopamine D1 receptor in social cognition: studies using a novel genetic rat model­ oleh Judith R. Homberg, Jocelien D. A. Olivier, Marie VandenBroeke, Jiun Youn, Arabella K. Ellenbroek, Peter Karel, Ling Shan, Ruben van Boxtel, Sharon Ooms, Monique Balemans, Jacqueline Langedijk, Mareike Muller, Gert Vriend, Alexander R. Cools, Edwin Cuppen, Bart A. Ellenbroek