Seminar paper from the year 2018 in the subject Didactics for the subject English - Pedagogy, Literature Studies, grade: 1,0, Free University of Berlin (Fachbereich Didaktik des Englischen), course: Entwicklung Forschung und Evaluation, language: English, abstract: Hattie found in his seminal meta-analysis of the impact of a large variety of factors on the success of learning that feedback was among the most powerful influences on achievement with an effect size of d = 0.78 (Hattie 2009). For any discipline dealing with education feedback and therefore formative assessment must be vital issues, as they are part of the answer to one of the most fundamental questions in these fields: How does learning work?