Bernhard Schieber

Congruity Theory: Test Whether the Endorsement Moves the Issue or Damages the Source

Communication · Executive Insight Brief · 064

An endorsement puts the source at risk too

An evaluative association can shift attitudes toward both the message object and the communicator who takes the position

Premise

When a trusted source praises something an audience dislikes, influence can run in either direction. Charles E. Osgood and Percy H. Tannenbaum’s Congruity Theory predicts pressure to reconcile attitudes toward a source and the concept that source evaluates. The audience may move toward the concept, downgrade the source, or adjust both.

The executive implication is reciprocal reputation risk. Selecting a prestigious spokesperson does not transfer unlimited approval to a policy, cause, partner, or product. Severe mismatch can provoke disbelief or sacrifice source credibility. Leaders should evaluate the full source–concept–assertion relationship rather than ask only whether the messenger is generally trusted.

Congruity Theory — An endorsement puts the source at risk too. Executive Insight Brief 463 by Bernhard Schieber.

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