Wikipedia
Werturteilsstreit
The Werturteilsstreit (German for "value judgment dispute") is a Methodenstreit, a quarrel in German sociology and economics around the question whether the social sciences are a normative obligatory statement in politics and its measures applied in political actions, and whether their measures can be justified scientifically.
The quarrel took place in the years before WWI, between the members of the Verein für Socialpolitik. Main opponents were Max Weber, Werner Sombart and Gustav Schmoller.
The Zweiter Werturteilsstreit is the debate between the supporter of the Kritische Theorie and the Kritischer Rationalismus during the 1960s — better known as Positivismusstreit.