PARTICIPANTS: The sample will consist of eighty undergraduate students from a large American university. Students will receive course credit. Our subjects will receive course credit in an introductory psychology course or in a behavioral science research methods course. Emails will be sent to a list of students provided by the psychology department. The students will pick a day and time to participate in the study. We estimate that the demographics of our participants will be mostly white and religious, reflecting the general demographics of the university. MATERIALS: Nelson–Denny Reading Comprehension test, version E (Brown, Bennett, & Hanna,1981), which consists of eight passages unmodified for difficult text. Those eight passages will be modified to easier versions (simplified syntax, including higher-frequency words). The passages, including the easy versions, were supplied via the original authors. For analysis of the results, R software will be used. The specific packages that will be used are lme4, psych, multcomp, lmerTest, languageR, and LMERConvenienceFunctions. Other materials include a computer to present the text and the software to present the text (software described below) PROCEDURE: Our plan is to replicate as closely as possible the procedures listed in the original study.. The participants will be randomly assigned to a group (Set 1 or Set 2). Each participant will be presented eight passages. The participants in Set 1 will be given four difficult passages (passages 1, 3, 5, 7), and four easy passages (passages 2, 4, 6, 8). For the participants in Set 2, the opposite will occur to counterbalance difficulty and order. After being assigned to a group, the participants will read a definition of mind-wandering. “Mind wandering is a term used to describe what occurs when your attention wanders from a task. Sometimes when your mind wanders, you begin thinking about personal events or concerns rather than your task. At other times, your mind can wander because you are bored or tired and you don’t really know what you’re thinking about; all you know is that you are no longer thinking about your task.” The participants then will read the passages one sentence at a time, using the spacebar to continue to the next sentence (they cannot return to previous sentences). Their reading times will also be recorded. Periodically, the participants will be presented with a thought probe that reads, “Were you mind wandering when you read the previous sentence?” The participants will respond by selecting keys “Yes” or “No”. After each passage, the participants will be required to answer comprehension questions. The total number of questions presented to each participant will be. Thought probes will be inserted in the text (ranging from 2 to 7 probes). Set 1 has a total number of 28 thought probes and Set 2 has 27 probes. Participants will be assigned an experimental three digit number to ensure anonymity. the first digit will signify which researcher administered the experiment. the researchers are designated as follows: Megan Hedding: 1 Cira Long: 2 Christina Pinargote: 3 Yesenia Sanchez: 4 Kyle Shepherd: 5 Andrea Valencia: 6 The software that will be used to present the passages, prompts, and questions is OpenSesame.OpenSesame is not the software program used by the original study, but is a close analog. Additional information on OpenSesame can be found [here][1]. [1]: http://osdoc.cogsci.nl/