**Data Set** We will collect accuracy data for each of four tasks--the 2AFC memory test, the 6AFC memory test, the change detection task with familiar objects, and the change detection task with familiar objects with the first array ignored. We plan to collect useable data from 24 participants. Participants are scheduled and tested in small groups of up to 5 participants. Depending on attendance rates at each experimental session, we may end up with slightly more than 24 participants. Whenever we must exclude a participant due to non-compliance (as listed below), we will replace that participant before viewing their data. After collecting data from a minimum of 24 participants, we will examine the data in order to exclude egregiously low performance (detailed below). If we have usable data from 20 or more participants after exclusions, we will stop data collection. If we have data from fewer than 20 participants, we will schedule additional sessions, again targeting a total of 24 participants. **Exclusion Criteria** Exclusion decisions will be made prior to examining any subject data. Subject data will be excluded from analysis on the following grounds: * Subjects score at or below 55% on the 2AFC memory task or 20% on the 6AFC memory task * Subjects score at or below chance on more than two tasks * Subjects did not attend to the study phase of the experiment, either by looking away from the screen for an extended period of time other than during the break screen or leaving the testing booth other than during the break screen* * Subjects fell asleep during the experiment* *Any instances of this will be noted in the lab log **Statistical Tests** We will conduct paired-samples t-tests (two-tailed), effect sizes (Cohen's d) with 95% bootstrapped confidence intervals, and calculate Bayes factors (two-tailed, medium spread) for the following comparisons: * Accuracy in the studied change detection task versus accuracy in the 6AFC memory test * Accuracy in the studied change detection task versus accuracy in the ignored change detection task * Accuracy on the ignored change detection task versus accuracy on the 6AFC memory test **Data Visualization** We will create the following plots: * Violin plots of individual subject accuracy on each of the four tasks * Violin plots of the difference scores for the three comparisons listed above * Point plots of average accuracy on each of the four tasks, with error bars representing 95% bootstrapped confidence intervals