“…The ALOUD study is an investigation of different psychological and biological factors possibly affecting cognitive performance and/or learning performance in adult students participating in distance education (Neroni, Gijselaers, Kirschner, & de Groot, ). Previous publications on the ALOUD study can be found here (Gijselaers, Barberà, Kirschner, & de Groot, ; Gijselaers, Kirschner, & De Groot, ; Gijselaers, Kirschner, & de Groot, ; Gijselaers, Kirschner, Verboon, & de Groot, ). Data from the biological part of this project, including the data for the present study, are available and stored permanently on DANS EASY, a sustainable platform for archiving research data (Gijselaers, ).…”