Oddly Wired
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behavior

A single new purchase triggers an endless cycle of consumption.

Grant McCracken's 1988 book 'Culture and Consumption' introduced the 'Diderot effect' as a sociological concept, interpreting Diderot's 1769 essay to explain consumer behavior.

It was a theoretical and historical analysis, not a scientific study involving the observation of modern consumption habits.

Your purchase is not an end; it is a signal to keep buying.

Where this comes from

Study
Grant McCracken (1988)
What the check found
McCracken proposed the concept in a sociological text, not through a contemporary scientific study of people replacing belongings. The claim drifts from a conceptual framework to an empirical observation.
Confidence
Solid, with limits

Related

One of these every day, and every one names the study it came from. When a finding is contested, it says so.