Espoused Theory vs. Theory-in-Use

Definition

Human beings store designs for action — strategies for resolving conflict, making a living, closing a deal — as a "master program for how to act effectively." Argyris distinguishes two kinds of this program: the espoused theory, which people believe they act on and report when asked, and the theory-in-use, the theory their actual behavior actually implements. The two can match, but Argyris and his colleagues found, to their initial surprise, "fundamental, systematic mismatches" between what people say they do and what they demonstrably do — and people are typically unaware of the gap. His shorthand for the everyday version: "Do as I say, not as I do."

In the Book

The distinction does the diagnostic work throughout the book. Secretary of State Dean Rusk espoused openness, transparency, and trust and called a meeting explicitly to build them — but his theory-in-use during that meeting was to control the outcome, avoid losing, and suppress his own negative feelings, which is why the meeting ended inconclusively rather than surfacing the resistance everyone privately felt. Andrew Grove at Intel espoused direct, candid, rigorous leadership and believed he was acting on it, "when in fact his theory-in-use was Model I" — he ruled out discussion of his own leadership style while being transparent about everything else, using openness itself to shut down openness. Argyris uses this same lens to indict the management-research literature he reviews in later chapters: researchers who study and prescribe better leadership are, by his account, themselves operating from an unexamined theory-in-use that never gets tested against the espoused values of the research.

Why It Matters

This gives a portable diagnostic move for any claim about values or intentions in any domain: don't take the espoused theory (the mission statement, the stated policy, the self-report) as evidence of what will actually happen — watch the theory-in-use, inferable only from what people actually do under pressure. It also names why good intentions routinely fail to produce good outcomes: the gap between the two theories is often invisible to the person holding them, so exhortation to "be more honest" or "be more open" does nothing if it targets the espoused theory rather than the behavior pattern actually in use.