the columns in the stata file masterfile.dta have the following descriptions: name description format/decoding timestamp starting date/time of session yyyymmdd_hhmm highdiscretion level of discretion 0=low discretion 1=high discretion treatment treatment 1=baseline 2=reward 3=punishment 4=reward and punishment technology impact/fee ratio effect on the employee/cost for the employer technology=1 or 3 session session identification is like the timestamp unique identification for the session group identification of the employer and employees dyads within a session pair identification of the employer and employees dyads over all sessions block block of this observation 1=observation is in the block of rounds 1-35 2=observation is in the block of rounds 36-70 3=observation is in all rounds All observations exist double in the file and for any analysis the right selection has to be made round round of the session inspect action of employer 0=no inspect 1=inspect shirk action of employee 0=work 1=shirk action action of employer in second stage 0=no action 1=assign reward tokens 2=witdraw punishment tokens tokens number of tokens for second stage action by the employer 0<=tokens=5 poemployer first stage pay off for the employer poworker first stage pay-off for the employee pototal poemployer+poworker rewcost the effect of assigning tokens as a reward on the payment of the employer puncost the effect of assigning tokens as a punishment on the payment of the employer cost rewcost+puncost reweffect the effect of assigning tokens as a reward on the payment of the emplee puneffect the effect of assigning tokens as a punishment on the payment of the employee effect reweffect+puneffect revemployer first + second stage pay off for the employer revworker first + second stage pay-off for the employee revtotal revemployer+revemployee labid1 desknumber of the employer in the lab labid2 desknumber of the employee in the lab