We report three repetitions of Falk and Kosfeld's (2006) low and medium control treatmentswith 364 subjects. Each repetition employs a sample drawn from a standard subject pool ofstudents and demographics vary across samples. Our results largely conict with those of theoriginal study. We mainly...

E-nstructions facilitates the use of electronic instructions in computerized laboratory ex-periments in social sciences. In this article I provide a set of guidelines for the installationand the use of E-nstructions.