Pre-Registration Template
This page provides our laboratory’s pre-registered implementation for the
Registered Replication Report (RRR) project to replicate two separate studies as
part of a single RRR task battery. These include:
1. Experiment 1 from: Mazar, N., Amir, O., & Ariely, D. (2008). The dishonesty of
honest people: A theory of self-concept maintenance. Journal of marketing
research, 45(6), 633-644.
2. Experiment 1 from: Srull, T. K., & Wyer, R. S. (1979). The role of category
accessibility in the interpretation of information about persons: Some
determinants and implications. Journal of Personality and Social psychology,
37(10), 1660.
Our study follows the standard protocol available on the main OSF page for the
RRR (https://osf.io/vxz7q/). After each heading below, we describe the details for
our implementation of the protocol (note that some responses use standardized
text, and individual laboratories fill in the values for their implementation).
Contributors
List all authors from your team along with their University affiliation. Except in rare cases (preapproved by the editor), contributing laboratories should have no more than 4).
Arne Roets (Ghent University)
Alain Van Hiel (Ghent University)
Experimenter skills/qualifications
Briefly describe the qualifications and training for those conducting the testing, and note how
any research assistants will be trained to administer the protocol. Note any expertise with the
topic area or methods used in this study.
Arne Roets and Alain Van Hiel are both professors of social psychology. They
both have ample experience with conducting experiments in large groups,
and will run the replication studies themselves.
Any research assistant that might be involved, would only do so in an
assisting capacity, to prepare the materials or help supervising during the
session(s).
Setting/Lab/Equipment
Please describe the testing environment. The protocol requires that testing be conducted in a
large classroom with at least 100 participants at a time. Include details about the size of the
testing classroom (number of seats, seating arrangement, etc.). Confirm that you will be able to
project a web-based timer (link will be provided) at the front of the room. If possible, please
include a photograph of the testing space.
We plan to run the experiments in a single session, taking place in the largest
auditorium of the School of Psychology and Educational Sciences at Ghent
university.
The maximum capacity of the auditorium is 613, which allows seating 250
participants at once, with one seats between participants, and an empty row
between every 2-3 filled rows. This is the usual seating arrangement during
multiple choice exams at our university, and precludes participants from
seeing their neighbors’ papers (at least without making very obvious
attempts).
We will be able to project a web-based timer at the front of the room (on two
large screens).
In the unlikely case that we are not able to test all participants in a single
session (e.g. if the large auditorium is not available for several weeks in
October and November), our backup plan is to organize two or more sessions
in a very similar, but smaller auditorium (max. capacity of 296), using the
same seating arrangement.
Target sample size:
How many participants do you plan to test in total. Replace N and K with values for your study.
Keep in mind that the protocol has specific requirements about the minimum size for each
testing session (bare minimum of 50, ideally at least 100)
We will schedule a total of 1 sessions with 250 participants in each session,
for a target sample of 1 x 250 participants.
Minimum sample size after exclusions:
Your minimum usable sample size must exceed the protocol requirement of 200 participants.
Note that your N below is a commitment: Once you register your page, you will need to
continue running testing sessions until you reach this many usable participants. Replace “N”
below with the minimum sample size for your study.
We will continue collecting data until we have usable data from a minimum of
225 participants.
Stopping rule(s):
Describe how you will ensure that your sample meets or exceeds your minimum sample size.
How will you determine when you will stop collecting data. Anticipate what you would do if, after
meeting your target sample size, you needed additional participants to meet your minimum
required sample size (e.g., after exclusions). The suggested wording is acceptable if you
replace N with the number of participants in each session and MINIMUM with your minimum
sample size after exclusions (the value noted under Minimum sample size above):
If, after completing all of the scheduled testing sessions and after any
exclusions, we have fewer than 225 subjects, we will schedule 1 additional
sessions of at least 50 participants until we have usable data from at least
225 participants.
Target sample demographics:
Describe the source of your participants, how they will be compensated (i.e., course credit,
paid, uncompensated), and the predicted demographic characteristics.
The target sample consists of first year psychology students, who will be
compensated in the form of course credit for the introductory course in social
Psychology.
Mean age is expected to be between 18 and 20 years old, with 60-80% of the
participants being female.
Materials
If you will be using translated materials, indicate that here and confirm that the testing language
used will meet the protocol requirements for the sentence descrambling task). If you are using
the standard materials, just leave the text below in place.
We will use the Dutch translation of the materials, provided by the lead
researchers.
We will use the provided packets and have verified that we can print them
without errors.
The testing language used meets the protocol requirements.
Randomization to conditions:
The randomization procedure is standardized, and all labs will follow the procedure below.
Participants will be randomly assigned to conditions by shuffling the packets
prior to each session, ensuring an approximately equal number of participants
for each condition in each testing session.
Blinding to conditions:
Describe how you will ensure that participants are unaware of other conditions and that
experimenters will be blind to the priming conditions when handing out the packets to
participants and during their completion (e.g., participants will be seated with an empty seat
between them).
The seating arrangement is described above and will be similar to that of
student examinations (including an empty seat between participants). Testing
packages will be made ready and placed on the individual seats before the
participants arrive. Packages will be shuffled and placed with a blank page
facing up, so the priming condition or any other information is not identifiable
to the experimenters that place the packages. Participants will be instructed
not to open their package until the experiment starts.
Exclusion rules:
Describe how you will handle data exclusions. The official protocol describes a number of
reasons for exclusion. These include participants falling outside the required age range,
participants who did not follow instructions, participants who did not complete all tasks, etc. You
must adhere to these exclusion rules. If you will be using any other exclusion rules, specify
them here (although deviations from these procedures are discouraged). If not, just use the
default text below.
We will use the exclusion rules specified in the protocol. Exclusions will be
made by someone blind to condition assignment.
Differences from the official protocol
Note any significant additions to or departures from the official protocol. If you are adding
additional measures or conditions to the end of the study, you should give full details here.
Please make sure to explain why adding these measures will not affect the primary tasks and
measures (you can refer to other uploaded materials if necessary or add more pages below). If
you are using translated materials, note that here too and describe your translation procedures
(who translated them and how you back-translated them to verify the accuracy of the
translations). You should provide the translations on additional pages.
We do not intend to deviate from the official protocol