Materials

HTML, Javascript and CSS files of the task, including: -A survey to gather socio-demographic data -Instructions, trial-by-trial contingency learning task (40 trials), and causal judgment question -Four 7-point Likert scale (easiness of reading, quickness, fluency, and willingness to participate) as manipulation checks -Metacognitive Self-Assessment Scale (MSAS) -Short version of the Raven's progressive matrices test The file to run the study (using a browser such as google Chrome or latest versions of Firefox) is the index.html file into the x136-Rep-Students folder. That index file opens a website in local that has a button called "Empezar el estudio". By pressing that button, a function will randomly select between another index.html file placed either in the x136a or the x136b folder. x136a folder contains the hard-to-read version of the experiment. x136b folder contains the easy-to-read version of the experiment. Font types are manipulated through the styles.css file into the styles folders. Stimuli are presented dynamically via de script.js files that are in the js folders. The javascript code generates individual outputs to register the responses in a .txt file that can be imported as a csv.