muCap: Connecting FaceReaderTM to z-Tree
b'\\u03bcCap (muCap) is a software package (citeware) for economic experiments enabling experimenters to analyze emotional states of subjects using z-Tree and FaceReader\\u2122. \\u03bcCap is able to create videos of subjects on client computers based on stimuli shown on screen and restrict recording material to relevant time frames. Another feature of \\u03bcCap is the creation of time stamps in csv format at prespecified screens (or at prespecified points in time) during the experiment, measured on the client computer. The software makes it possible to import these markers into FaceReader\\u2122 easily. Until recently, connecting z-Tree and FaceReader\\u2122 was only possible using workarounds or by undertaking many successive actions manually. \\u03bcCap is the first program that significantly simplifies this process with the additional benefit of extremely high precision. This paper describes the usage, underlying principles as well as advantages and limitations of \\u03bcCap. Furthermore, we give a brief outlook of how \\u03bcCap can be beneficial in other contexts.'