This research project analyzes the effect of a change in the reference point and the endogenous decision to reveal the reference point on the real effort provided in a real effort laboratory experiment. Absolute differences in the performance in a repeated math task are endogenously or exogenously revealed or not revealed at all participants in a group, before participants redo the math task again.

This experiment ran in the experimental software "zTree"

The dataset contains the following folders:

• "Instruktionen": The instructions that where handed out to the experiments' participants, regardless of the treatment that was run.
• "zTree": The zTree source code that was used or running the individual sessions.
• "Daten": The experimental data of thirteen (13) sessions, held between May 30th and June 21st in 2016.