[de blog is gebaseerd op deze Twitter thread thread; unrolled: here] Question #1: do they really exist? Is it possible for a difference to really exist? I can hear you shouting: ‘Of course they do, come and visit my classroom!’ Yet I once surprised Denny Borsboom (research on validity) with my question. In decision making: […]
The concept of individual differences — Fair schooling & assessment
Nonpartisan Education Group 