The preregistration for this experiment is available [here.][1] Our goal in Experiment 1 is primarily to explore whether people are able to accurately report the location of the unexpected object when they are asked where they first noticed it. If people can accurately localize where they first noticed the object, it would provide rich information on the time course of noticing in sustained inattentional blindness. In this experiment, we will run two unexpected object conditions in a sustained inattentional blindness paradigm. In one condition, the unexpected object will be visible for 5 seconds. In the other, it will be visible for 2.67 seconds. In both cases, in addition to the typical questions used to probe noticing, subjects will also mark the place on the display where they first detected the unexpected object. We will analyze this location data between conditions and for both noticers and non-noticers to determine whether people can accurately localize the object; if they can, this self-report method can provide a tremendous amount of information about the fine details of when noticing occurs. In addition to the location data, we will have the usual noticing rates between the two duration conditions. This will provide a coarse indicator of the time course of noticing by revealing what impact, if any, the extra time the unexpected object spends on screen has on noticing. [1]: https://osf.io/ubk7y