Participants

Based on an effect size of d = 1.03, which was found in a previous similar study from our lab (Milivojevic et al., 2015) in hippocampus, an alpha level of 0.001 (necessary for corrections for multiple comparisons in fMRI data) and power of 0.95, a sample size of N = 26 was calculated to be necessary using G*Power (http://www.gpower.hhu.de/). 26 participants signed up for the study through a University-wide online recruitment system. The mean age of the group was 24.88 ± 2.21 (mean ± std) and 11 were female. All participants underwent a familiarization phase in Donderstown, so they had good knowledge of the city (see below). All participants gave written informed consent, filled in a screening form to ensure they did not meet any exclusion criteria for fMRI and were compensated for their time. The study was approved by the local ethics committee (CMO Regio Arnhem-Nijmegen).