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In general, the study follows the procedures from Gluth et al. (2015) in most aspects: Participants will make memory-based decisions between snacks that they will have evaluated beforehand. At the end of the experiment, participants will work on a novel task in which they state their “belief in memory performance” for every snack presented during decision making. First, Participants’ subjective value of the snacks will be measured on a continuous 0-10 rating scale. Next, participants will learn abbreviations of snacks’ names until 100% accuracy is reached. Abbreviations will be needed later in the recall phase. We will use the memory-and-choice task from Gluth et al. (2015) consisting of the following 4 phases, which will be repeated for 24 rounds: 1. Encoding phase. Participants will be presented with a set of snacks on the computer screen. Each snack will be associated with a specific screen-location. Inspection of items will be done sequentially. For each of the snacks shown, participants will have to press a key indicating whether the given snack falls under a salty or sweet category. 2. 2-Back task. The aim of the task is to overwrite participants’ working memory. 3. Decision phase. Participants will make a decision from two locations that are high-lightened. 9 decisions between two options will be made in each round. Chosen items with higher subjective value (according to the initial rating) will be recorded as correct choices. 4. Cued recall phase. Participants will be asked to recall items by identifying them on hidden locations, using the abbreviations learnt in the previous abbreviation task. Last, we will measure subjective belief about participants’ own memory performance in the memory-and-choice task on a discrete 0-6 scale. More specifically, participants will be informed that each snack was presented exactly 6 times during the memory-and-choice task. They will then be asked to rate for each snack how often (from 0 to 6) they think they have successfully remembered the snack.
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