Data set of chirality tasks with notes (SoSe 23, WiSe 23/24, SoSe 24) - task-centred and person centred

The data set was generated to examine to what extent task difficulty and invested mental effort differ for digital and paper-pencil-based tasks on the topic of chirality (RQ1) and to what extent note-taking impacts students’ working memory load when working on paper-pencil-based chirality tasks in organic chemistry (RQ2). The data set is based on the responses of 80 students who completed 19 chirality tasks tandems (each with one digital and one paper-pencil-based task) and rated their invested mental effort for each task. IRT analyses were used to generate Rasch values describing each task regarding task difficulty (digital and paper-pencil format), invested mental effort (digital and paper-pencil format) and note-taking in the paper-pencil format. Additionally observational averages from a DIF analysis describes the aforementioned variables for the two groups of students (note-takers and students whos test booklets showed no processing traces). The data were collected in three semesters (summer 2023, winter 2023/24, summer 2024) during in class sessions of an introductory organic chemistry exercise. A within subject design was used (paper-pencil, digital). Data were analysed using Winsteps and SPSS.