Horkheimer had abandoned his interdisciplinary programme by the time of the Dialectic of Enlightenment

Evidence

Horkheimer’s own theoretical work was hardly progressing at all. Just as he had once mentioned his book on dialectics at every opportunity, he now constantly spoke of continuing his philosophical work now that he had finished the Philosophical Fragments. But its continuation never progressed beyond the stage of notes. After Dialectic of Enlightenment, he only produced occasional works during the 1940s, and these would barely have met even his own standards for leading articles in the journal. — Rolf Wiggershaus, The Frankfurt School, 1683 (#corroborates, via linked claim)

The first results of these studies, it was planned, would be published in a yearbook, since the SPSS was to cease publication with the delayed appearance of the issue on Nazism. The entry of the United States into the war and financial considerations were only additional factors in this decision. The basic reason was that Horkheimer had become convinced that in its current form the journal constituted a concession, and no longer corresponded at all to what had been intended. — Rolf Wiggershaus, The Frankfurt School, 1240 (#qualifies, via linked claim)

Categorization

• XREF: connects to: Horkheimer produced almost no serious theoretical work after Dialectic of Enlightenment. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1683; Horkheimer abandoned the SPSS because it no longer matched his intentions — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1240

Broader Connections

• Horkheimer produced almost no serious theoretical work after Dialectic of Enlightenment. #corroborates (0.75) — Rolf Wiggershaus, The Frankfurt School, 1683
• Horkheimer abandoned the SPSS because it no longer matched his intentions #qualifies (0.72) — Rolf Wiggershaus, The Frankfurt School, 1240