Implementation Details
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This page describes how our lab implements 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]
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#### Experimenters ####
Lynott and Connell lead the replication team, and have had prior experience of conducting Registered Replication Studies (e.g., Lynott et al., 2014, Social Psychology) as well more general experience conducting experimental research in the area of embodied cognition. The remainder of the team are undergraduate honours students (Sophie Lund, Sarah Riding, Christina Powis, Bethany Pearson, Bethany Wainwright), who have experience collecting data, and will be fully trained in the experiment protocol prior to data collection commencing.
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#### Setting/Lab/Equipment ####
Participants will be tested individually in one of several testing rooms available to us, each fitted with a desk, computer and chair for the participant (see images below). Each participant will be greeted in the lobby and a researcher will accompany them to their individual testing room. Once the participant is ready to start the experimental tasks, the experimenter starts the video recording and leaves the testing room to allow the participant to complete the study independently.
When the participant has completed the tasks, they can alert the researcher, who will return to the testing room and debrief the participant.
As there are no other participants in the room, and the researcher will be outside the testing room during the study, participants will know that they will not be directly observed while they complete the tasks.
If a participant requires assistance, they can open the door to attract the researcher's attention at any time.
We will use PC and Mac computers to present information and instructions to participants. A camera will be mounted on top of the monitor to capture participants pen-holding behaviour during the study.
*Images of 4 different testing rooms:*
![Test1][4]
![Test2][5]
![Test3][6]
![Test4][7]
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#### Sample, subjects, and randomization ####
**Target sample size:**
200 participants
**Target sample demographics:**
Participants will be recruited from Lancaster University and environs. We expect that the majority of participants will be undergraduate students (UK-based, age 18-23, predominantly White-British), with a smaller proportion of older adult participants. All participants will be native speakers of English.
Students will be compensated by receiving course credits or by receiving payment at the standard university rate (£7/hour).
**Minimum sample size after exclusions:**
Our minimum sample size is 200 participants.
**Stopping rule(s):**
We will initially aim to collect 210 participants, split evenly across the two conditions. If after exclusions the number of participants falls below 200, we will continue to recruit until we reach 200. If we are unable to reach this number of participants by December 1st, 2015, we will need to stop testing.
**Randomization to conditions:**
Participants will be tested by alternating the condition assignment for every other participant. If after exclusions additional participants are needed, we will repeat this procedure to meet our required sample size. The allocation of the first condition will be decided by a coin toss.
**Blinding to conditions:**
Participants will be blind to the alternative condition as they will be tested individually, and so unable to see other participants completing the study.
**Exclusion rules:**
We will use same exclusion rules as required by the official protocol. We will also apply these exclusion rules to the two supplmentary judgement tasks. For example, participants who do not correctly respond to more than half of the items in each of the supplmentary judgement tasks (facial expressions, word valence) will be excluded from subsequent analyses. Exclusion decisions will be made blind to participants' actual data/responses. Any excluded data will still be retained and reported.
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#### Software/Code ####
We will use the provided materials and have verified that these work in our laboratory.
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#### Differences from the official protocol ####
We will be conducting the replication as described in the original protocol. However, following the exit interview for the cartoon rating task, participants will complete a series of short additional tasks and measures. As these always occur after the primary task, they will have no effect on the primary task or its measurement.
We briefly describe the tasks and measures below, but we refer you to the uploaded file ([Supplementary Measures Protocol][8]) for further details.
***Judgement of facial expressions***
Participants will receive a series of images of faces and they will be asked to decide whether each facial expression is more happy or more sad by marking the appropriate box. Faces will be taken from existing facial expression databases (e.g., Chicago Face Database, Karolinska Directed Emotional Faces database), and will comprise a range of happy, sad, and neutral expressions.
***Judgements of word valance***
Participants will receive a series of words of varying valence (taken from the existing ANEW word valence norms) and they will be asked to rate how positive/negative they find each word using a positive-to-negative 5-point mannikin valence scale which has been used in previous valence norms.
***Individual Differences measures***
Participants will complete three standardized individual differences measures: Ten-Item Personality Inventory, PANAS mood scale, and the Toronto Empathy Questionnaire. We will use the standard instructions for these scales. References for these measures are provided below.
***Filler Task***
Between the facial expression and word valence judgement tasks, participants will complete a brief filler task, which will involve completing a series of line bisections. The purpose of the task is merely to provide a distraction from the emotion/valence components of the two judgement tasks.
[1]: https://osf.io/6wvj4/
[2]: https://osf.io/hgi2y/
[3]: https://osf.io/pkd65/
[4]: http://www.lancaster.ac.uk/staff/lynottd/TestingRoom1.jpg
[5]: http://www.lancaster.ac.uk/staff/lynottd/TestingRoom2.jpg
[6]: http://www.lancaster.ac.uk/staff/lynottd/TestingRoom3.jpg
[7]: http://www.lancaster.ac.uk/staff/lynottd/TestingRoom4.jpg
[8]: https://osf.io/dqbm5/