“…However, via teachers' professional learning (Dudley, Xu, Vermunt, & Lang, ), it also develops the teaching culture and knowledge and practice‐tied communities, whilst encouraging self‐reflection and activity as teachers (Mewald & Mürwald‐Scheifinger, ). Most importantly perhaps, it has an impact on teachers' beliefs and attitudes concerning teaching and its development (Khokhotva, ; Sarkar Arani, Lander, Shibata, Lee, & Kuno, ). The changes thus brought about are typically indirect, only becoming apparent in the long run, so it is impossible to measure the impact with traditional research methods which focus on short term and immediate impacts.…”