By contrast to the mild deflation of the so - called Great Deflation although economic data are not quite as clear on the matter .
The so - called Great Deflation is the deflation of the 1930s Great Depression was so severe that deflation today is associated with depressions .
By contrast to the mild deflation of the so - called Great Deflation , the deflation of the 1930s Great Depression was so severe that deflation today is associated with depressions , although economic data are not quite as clear on the matter .