Horkheimer’s 1935 ‘The Problem of Truth’ catalogued dialectical thought’s defining characteristics.

Evidence

In his essay on The Problem of Truth', which appeared in the ZfS in 1935, he listed a whole catalogue of characteristics of dialectical thought’: It relativizes every multifaceted, but isolated, definition in the consciousness of the alteration of subject and object as well as their relationship. — Rolf Wiggershaus, The Frankfurt School, 199

Categorization

• XREF: Cross-references the reader’s Horkheimer essay files; a precise date and venue for a core methodological text. — connects to: Horkheimer attacked pragmatism for reducing truth to what conforms to present reality — Martin Jay, The Dialectical Imagination: A History…, 308; Dialectical thought is essentially the elaboration of dialectical sentences — Fredric Jameson, Marxism and Form, 16
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Horkheimer attacked pragmatism for reducing truth to what conforms to present reality — Martin Jay, The Dialectical Imagination: A History…, 308; Dialectical thought is essentially the elaboration of dialectical sentences — Fredric Jameson, Marxism and Form, 16