Behavioral and Brain Sciences

Author's Response
Hertwig & Ortmann: Experimental practices in economics

Money, lies, and replicability: On the need for empirically grounded experimental practices and interdisciplinary discourse

Ralph Hertwig a1 and Andreas Ortmann a2
a1 Center for Adaptive Behavior and Cognition, Max Planck Institute for Human Development, 14195 Berlin, Germany [email protected]
a2 Center for Economic Research and Graduate Education, Charles University and Economics Institute, Academy of Sciences of the Czech Republic, 111 21 Prague 1, Czech Republic [email protected]


This response reinforces the major themes of our target article. The impact of key methodological variables should not be taken for granted. Rather, we suggest grounding experimental practices in empirical evidence. If no evidence is available, decisions about design and implementation ought to be subjected to systematic experimentation. In other words, we argue against empirically blind conventions and against methodological choices based on beliefs, habits, or rituals. Our approach will neither inhibit methodological diversity nor constrain experimental creativity. More likely, it will promote both goals.