Implementation of the official protocol --------------------------------------- **Experimenters** Testing will be conducted by undergraduate research assistants. Each undergraduate research assistant will have a training session with Dr. Jacqueline Evans, Benjamin Fay, or Alexandra Mosser to go over the protocol. The experimenters will all be given a copy of the Step-by-Step Procedure, as well as the Methods section from the Protocol to study before running the procedure at least twice with a fellow experimenter playing the role of a participant. **Piloting / training** For piloting and training purposes, each experimenter must successfully run the procedure at least twice with a fellow experimenter, or another lab member, playing the role of the participant. **Experimenter knowledge of expected outcomes** All experimenters running participants for this experiment will be undergraduate research assistants blind to the nature of this research. To ensure that the experimenters are unaware of the true nature of the experiment, they will each take an online survey asking them to identify and explain several basic concepts, classic experiments, and phenomenon in social psychological research. This will include ego-depletion, as well as several other distractor concepts such as the confirmation bias and the Stanford prison experiment. The survey will not specify which of these concepts is of particular interest to the researchers. Only undergraduate research assistants who do not know or only have a vague understanding of what ego-depletion is will be made experimenters for the project. The experimenters will retake this online quiz halfway through the data collection and again at the end of data collection to verify whether they learned about the ego-depletion effect during the course of data collection. **Recruiting** Participants will be recruited from the undergraduate research participant pool (FIU.sona-systems.com). The experiment will be described as “a study of word and number recognition and reaction time.” **Sample, subjects, and randomization** We will keep running participants who self-register from the subject pool until we have at least 84 per condition (N = 168) who are from 18 to 30 years old and self-identify as native English speakers. To determine if participants meet the demographic requirements for the study, they will be asked to indicate their age and gender. Additionally, to ensure that all participants are native English speakers, the study description will indicate that all participants must be native English speakers to be eligible to sign up, and all participants will be asked at the conclusion of the study whether English is their native language. Participants will be assigned to conditions according to a sequence generated by a random number generator containing 84 of each condition in random order. If participants need to be excluded (e.g., for not meeting demographic requirements), blocks of 10 additional participants (with 5 assigned to each condition) will be run until both conditions have at least 84 participants. **Setting/Lab/Equipment** The testing environment will be a closed room with one door, a desk, and chairs. Participants will be run on a laptop computer (Dell Latitude 3330 running Windows 7 with a 13 inch screen), and an additional laptop computer with a 13 inch screen may be ordered. We have not yet received a copy of the E-Prime software, but we plan to use version 2 as per the documentation provided regarding the procedures to be followed. Protocol_49TQVF Step-by-step_KCWW2005