**LEAD CONTRIBUTORS:** - Andrew Nelson - Pacific Lutheran University - Jon Grahe - Pacific Lutheran University - Fabian Ramseyer - University of Bern, Switzerland - Kelsey Serier - Pacific Lutheran University **ACKNOWLEDGEMENTS:** - Mckenna Corlis (Data Collection, Data Structuring) - Jae Kim - Pacific Lutheran University (Data Collection, Video Coding) - Markelle Lance (Data Collection, Data Structuring) - Eric Ottenbacher - Pacific Lutheran University (Data Collection, Video Coding) **PROJECT HISTORY:** In the Fall of 2011, Dr. Fabian Ramseyer (Stanford University; University of Bern, Switzerland) contacted Dr. Jon Grahe (Pacific Lutheran University) regarding a proposal for Dr. Grahe's "Collective Undergraduate Research Project" (CURP; 2010). The resulting agreement had reciprocal benefits: Dr. Ramseyer submitted a detailed protocol to the CURP, which could be manipulated or expanded upon by students seeking a meaningful undergraduate research experience. In return, Dr. Ramseyer could bolster his testing of Motion Energy Analysis (MEA; see our "Shared Methodology and Study Idiosyncrasies" component) using samples from a variety of geographic locations. Beginning in the Spring of 2012, three student projects generated data related to Dr. Ramseyer's CURP proposal. Two of these projects, which we refer to here as Study 1 and Study 3, led to novel findings about how situational characteristics prime or impede the development of dyadic rapport and consequential behavior-mirroring. Additional studies emerged from two students' particular excitement in the investigation. Andrew Nelson conducted Study 2 as part of the S. Erving Severtson / Forest Foundation Undergraduate Research Fellowship (offered through Pacific Lutheran University), and Kelsey Serier spearheaded Study 4 for her senior Capstone project. Our four studies have resulted in a robust assortment of data that we wish to share with the research community. Collaborations and replications are more than welcome! **CURRENT STATUS:** Currently we are drafting a theoretical paper summarizing our past three years of research. Research assistants have since coded the videotaped interactions recorded in Studies 1 and 2, and their subjective coding appears to be reliable when compared to the MEA output. Additionally, preliminary analyses of their results suggest that these data support Tickle-Degnan's (2006) optimal experience hypothesis and agree with the more general experience of "flow" (Csikszentmihalyi, 1990). We thus plan to address both theories in the coming manuscript. **FUTURE GOALS:** These data possess substantial reuse potential, and accordingly, our primary goal is to share them with others. Researchers interested in the dynamics of dyadic processes would find these data especially useful. Because our data include information about both participants’ interpersonal tendencies *and* the dyadic exchanges themselves, theorists could determine how certain personality characteristics influence rapport development. Moreover, these data are pertinent to investigations about dyad agreement and might help in exploring possible associations between participant perceptions and resulting behavior. **NOTABLE REFERENCES:** Bernieri, F., Gillis, J.S., Davis, J.M., & Grahe, J.E. (1996). Dyad rapport and the accuracy of its judgment across situations: A lens model analysis. *Journal of Personality and Social Psychology*, *71*, 110-129. Csíkszentmihályi, Mihály (1990), *Flow: The Psychology of Optimal Experience*, New York: Harper and Row, ISBN 0-06-092043-2. Grahe, J. E., & Sherman, R. A. (2007). An ecological examination of rapport using a dyadic puzzle task. *The Journal of Social Psychology*, *147*(5), 453-475. doi:10.3200/SOCP.147.5. 453-476. Ramseyer, F., & Tschacher, W. (2006). Synchrony: A core concept for a constructivist approach to psychotherapy. *Constructivism In The Human Sciences*, *11*(1-2), 150-171. Ramseyer, F., & Tschacher, W. (2011). Nonverbal synchrony in psychotherapy: Coordinated body movement reflects relationship quality and outcome. *Journal of Consulting and Clinical Psychology*, 79(3), 284-295. doi:10.1037/a0023419 Tickle-Degnen, L. (2006). Nonverbal behavior and its functions in the ecosystem of rapport. In V. Manusov, & M. Patterson (Eds.), *The SAGE handbook of nonverbal communication.* (pp. 381-401). Thousand Oaks, CA: SAGE Publications, Inc. doi: http://dx.doi.org/10.4135/9781412976152.n20 Tickle-Degnen, L., & Rosenthal, R. (1990). The nature of rapport and its nonverbal correlates. *Psychological Inquiry,* 1(4), 285-293. doi:10.1207/s1532796p5li0104_1 <p xmlns:dct="http://purl.org/dc/terms/" xmlns:vcard="http://www.w3.org/2001/vcard-rdf/3.0#"> <a rel="license" href="http://creativecommons.org/publicdomain/zero/1.0/"> <img src="http://i.creativecommons.org/p/zero/1.0/88x31.png" style="border-style: none;" alt="CC0" /> </a> <br /> To the extent possible under law, <a rel="dct:publisher" href="https://osf.io/dyntp/"> <span property="dct:title">Andrew Nelson</span></a> has waived all copyright and related or neighboring rights to <span property="dct:title">Exploring the Dyadic Rapport / Behavioral Synchrony Interplay Using Motion Energy Analysis</span>. This work is published from: <span property="vcard:Country" datatype="dct:ISO3166" content="US" about="https://osf.io/dyntp/"> United States</span>. </p>