1) Participants gain credit for their participation instead of get paid
2) French participants and script translated into French
3) The original material was not available anymore, a new one was built in respect of the acquirable description (see [Material section][1])
4) There is a bit more than 50 years past between the initial experiment and the current replication.
We assume the main difference rests on sample size with a minimum of 200 Ps instead of 40.
[1]: http://openscienceframework.org/project/jQKF6/node/M5G26/