Fairness and Trust in Human Bot Interaction - Amendment

We are filing an amendment to the pre-analysis plan (egap.org, \#20190912AD), from now on PAP, after the analyses of the outcome data. In the attached document first, we discuss the motivation for this amendment, then, we discuss the content of the amendment. We do not restate the particulars of the experiment, conditions and procedures here, as no change have been made to the particulars of the experiment, or its procedures.