Implementation Details ---------------------- This page describes how our lab implemented the procedures required by the official protocol for the RRR. It also describes and justifies any additions to or departures from that protocol. You can view the official protocl and the main project page for this RRR using these links: - Official Protocol: [https://osf.io/ypd78/][1] - Main RRR project page: [https://osf.io/scu2f/][2] ---------- #### Experimenters #### The experimental team consisted of Ms. Ajita Srivastava, a PhD student trained in Psychological research, Dr. Sumitava Mukherjee a postdoctoral fellow with training in Cognitive Science, and Prof. Narayanan Srinivasan, a Professor in Cognitive Science. The two senior Individual members of the team have published in international peer reviewed journals and have conducted studies using a variety of methods including paper-based questionnaire, computer-based experiments and neurophysiological studies which includes studies on pro sociality and social cognition. The student member has primary interests in cooperation and decision making. ---------- #### Setting/Lab/Equipment #### The experiment was conducted in a laboratory with multiple computers arranged in a row separated from each other by a partition. ![A sample picture of the setup][3] *A sample picture of the setup* ![Another sample picture][4] *Another sample picture of the setup* ---------- #### Sample, subjects, and randomization #### **Target sample size:** There are around 20 testing stations in our lab, of which we will be using 12 or 16 stations at a time (we will ensure the rest of the stations are unoccupied during the experiment). We planned to run the experiment for 16 sessions, resulting in a minimum of 192 and maximum of 256 participants. **Final sample size for analysis** : 204 participants were run in different sessions, however the data for monetary contribution was recorded for 195 participants. Details can be found in the summary in the link below: ([https://drive.google.com/file/d/0B0J_WbeRSoyXNXBZaU9OZ0pSdjJWNWdtaWQ1QXJ2UE5DVTlJ/view?usp=sharing][5]) **Target sample demographics:** Participants were from University of Allahabad or near by educational institutions pursuing undergraduate or graduate/postgraduate studies. Their age would range typically from 18 to 28 years. They would most likely belong to the Indian middle class income group in terms of their economic background. While English was not their native language, many participants have their education in English. However, we used Hindi as the medium in our experiment as all participants were fluent in Hindi. **Final sample demographics** Participants were from University of Allahabad or nearby educational institutions pursuing undergraduate or graduate/postgraduate studies. Their ages ranged from 18 to 28 years. All of them were conversant in Hindi and thus selected for the experiment since the script was in Hindi. We decided to run the full experiment in Hindi so that there is no differences in understanding of language across participants. The final sample comprised of 109 male 95 participants. One of the male participants had entered 'other' as a response to gender. This was informed to Replication editors before analysis. **Minimum sample size after exclusions:** We decided to stop once we have at least 96 usable participants in each condition. **Stopping rule(s):** If, after completing all of the scheduled testing sessions and after any exclusions, we have fewer than 96 subjects in either condition, we decided to schedule additional sessions of 12-16 participants until we have usable data from at least 96 participants in each condition. Finally, we had 204 data points. **Randomization to conditions:** Participants were randomly assigned to conditions by the provided Qualtrics Script. **Blinding to conditions:** The instructions about the time constraints was presented on each participant’s computer screen separately. Since each participant had a separate cubicle, they were unable to see each other’s instructions. **Exclusion rules:** We removed participants for whom there was an internet interruption or the survey was incomplete. **Procedures for handling testing sessions for which the number of participants is not a multiple of 4:** All sessions had a multiple of 4 participants ---------- #### Software/Code #### We used the provided materials, including the Qualtrics scripts, and we have tested to make sure that they work in our laboratory. ---------- #### Differences from the official protocol #### All instructions were in Hindi. We have translated everything to Hindi, which is a native language used in Allahabad, U.P., India. The student member translated the material from English to Hindi. The material was given to a bilingual proficient in both languages to verify the accuracy of the translation. The links to the translated files are given below. We have also modified the currency (from Dollars to Rupees). We paid Rs.50 instead of 5 dollars as a show up fee and Rs. 80 instead of 4 dollars that was used for the game. Translated material is available below: [Translated Hindi qsf file][6] [Translated Hindi script word doc][7] [Translated Hindi script pdf][8] [Translated Hindi consent form word doc][9] [Translated Hindi consent form pdf][10] [1]: https://osf.io/ypd78/ [2]: https://osf.io/scu2f/ [3]: https://mfr.osf.io/export?url=https://osf.io/f8yq7/?action=download&direct&mode=render&initialWidth=723&childId=mfrIframe&format=1200x1200.jpeg [4]: https://mfr.osf.io/export?url=https://osf.io/dptcr/?action=download&direct&mode=render&initialWidth=723&childId=mfrIframe&format=1200x1200.jpeg [5]: https://drive.google.com/file/d/0B0J_WbeRSoyXV2QxVUdOSmNMaHNic09LbDdwNFJpMFRrWkZV/view?usp=sharing [6]: https://drive.google.com/file/d/0B0J_WbeRSoyXNktWakVvYzNUdEctWXBYMkFScHJkaFpmSlpF/view?usp=sharing [7]: https://docs.google.com/document/d/1ZHzxJCC0XIus7grFbxjiRJit5jf_YxEKBhzKYGyoGKU/edit?usp=sharing [8]: https://drive.google.com/file/d/0B0J_WbeRSoyXZGZvSzdBdzExbnEtekV3MHd0eUF2QlZyQnJB/view?usp=sharing [9]: https://drive.google.com/file/d/0B90pgyZnb4I7N1NFODFVZEJ6WEo0ZTdhVGdReEVadkNtUzNR/view?usp=sharing [10]: https://drive.google.com/file/d/0B90pgyZnb4I7Zm1iaVNaN0ZqdVVjeEdUckpic0lVSG5aQzNj/view?usp=sharing