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 protocol and the main project page for this RRR using these links: - Official Protocol: [https://osf.io/6wvj4/][1] - Main RRR project page: [https://osf.io/hgi2y/][2] - Project page with all materials: [https://osf.io/pkd65/][3] ---------- #### Experimenters #### All of the experimenters involved in this replication are graduate students in psychology who have a considerable amount of experience developing experimental studies, interacting with participants, and analyzing data. Three of the experimenters have also been involved in other large-scale replication projects (i.e., Many Labs 3). As part of the Carleton University Happy Lab, the experimenters are fairly familiar with the emotion literature but this will be the first study they run that directly relates to the facial feedback hypothesis. Each of the experimenters will familiarize themselves with the official protocol online and several practice runs will be conducted to ensure that the experimenters are running the experiment in a consistent and appropriate manner. ---------- #### Setting/Lab/Equipment #### When participants arrive at the lab they will be escorted to an individual testing room (see images below for an idea of how the room was set up). The experimenter will leave the testing room, close the door (leaving it open only a crack), and sit in an adjacent room when participants are reading the informed consent form, viewing the task instructions, and completing the tasks. The experimenter will observe the participant as they complete the practice task to ensure that they are correctly following the instructions of how to hold the pen in their mouth. Only one participant will be run at a time. Participants will be asked to leave the testing room and find the experimenter in the adjacent room when they are instructed to do so or if they have any questions. The task instructions will be viewed on a Mac desktop computer and a Logitech HD C615 webcam will be placed on the desk (facing upwards) to record participants while they are completing the tasks to ensure that they are holding the pen in their mouth correctly. ![Lab Photo 1][4] ![Lab Photo 2][5] ![Lab Photo 3][6] ---------- #### Sample, subjects, and randomization #### **Target sample size:** We plan to run 150 participants in total. **Target sample demographics:** We will recruit psychology students from our departmental undergraduate participant pool. As part of their first-year introductory and second-year statistics/methodology courses, students are able volunteer to participate in studies for extra course credit. Participants will receive 0.5 course credit for participating in this study. Similar to other North American universities, psychological studies conducted at Carleton University tend to have more female than male students, the majority of participants tend to be White, and their average age tends to be around 20 years old. **Minimum sample size after exclusions:** Our minimum sample size after exclusions will be 100 participants (50 in each condition). **Stopping rule(s):** We plan to stop collecting data once we have run 150 participants. We have chosen this number as we expect that at least two-thirds of participants that we run will have usable data, thus allowing us to meet the minimum sample size requirements. If there are more exclusions than expected and there is not 50 participants with usable data in each condition after running 150 participants, we will continue running participants, with random assignment to conditions, until a minimum of 50 in each condition is reached. **Randomization to conditions:** We will assign participants pseudorandomly to the conditions. Specifically, individuals with odd participant ID numbers will be assigned to the pouting condition and individuals with even participant ID numbers will be assigned to the smiling condition. This randomization procedure will be used even if/when we need to run additional participants. **Blinding to conditions:** To minimize the possibility that participants will be aware that there is another condition in the study, participants will be run one at a time and will be asked during the debriefing to not talk about the study with friends or classmates. Only the relevant video instructions will be open on the computer and these files will be given ambiguous names (i.e., "Instructions_RRRS" and "Instructions_RRRP") to avoid tipping off participants that there might be more than one condition. **Exclusion rules:** In addition to following all the same exclusion rules in the official protocol, we will also exclude participants from analyses who do not consent for us to use their data after being debriefed and who indicate that they have previously learned about the facial feedback hypothesis. Exclusion decisions will be made by someone blind to condition assignment. ---------- #### Software/Code #### We will be using the provided materials and have verified that they work in our laboratory. ---------- #### Differences from the official protocol #### Two minor changes were made in the exit interview form at the end of the booklet: 1. The 20 dollar euro voucher line was deleted. 2. A question asking participants whether they have learned about the facial feedback hypothesis was added. We had to modify the informed consent and debriefing forms to obtain approval from the research ethics board at our university. Moreover, the information brochure and informed consent form were merged into one document following recommendations from our ethics board. Our ethics board also required us to ask for participants' consent to use their data after they are debriefed. We have uploaded the recruitment notice, informed consent form, booklet, debriefing form, and informed consent to the use of data form that we will be using under files in this component. Our study is not expected to deviate from the approved protocol in any other way. [1]: https://osf.io/6wvj4/ [2]: https://osf.io/hgi2y/ [3]: https://osf.io/pkd65/ [4]: http://i57.tinypic.com/2mw9n44.jpg [5]: http://i60.tinypic.com/1629zrr.jpg [6]: http://i57.tinypic.com/2niqphk.jpg