Acknowledgements

I dedicate this thesis to my mother, who endured what cannot be described to give what only can be felt.

I want to thank my advisers, Dr. Andreas M. Brandmaier and Prof. Manuel Völkle for their time and patience, and my friends for their resourceful advice:

• Jakob Eißner (commits bc53e58, 9841a36 & 4857dcb)
• Elisabeth Riha (commit 82f32d4)
• Caroline Gahrmann (commit d9a730c)
• Andreas Brandmaier (commit 9207348)