Mmetụta SnackWell

Nke SnackWell mmetụta bụ a phenomenon ebe dieters ga-eri ihe ala-kalori kuki, dị ka SnackWells, karịa ka ha ga-eme maka nkịtị kuki. "One reason I've suggested is what called the SnackWell's Phenomenon: By giving a free pass to good nutrients, people go there and eat a lot more food. If one SnackWell's is okay because it's low-fat, a whole box is probably better." -- Food writer Michael Pollan in his Otis Lecture at Bates College, Oct. 27, 2008.  A makwaara ya dị ka akwụkwọ ikike omume, a na-akọwakwa ya dị ka okwu maka ụzọ ndị mmadụ na-esi agafe mmiri mgbe e nyere ha ohere n'efu  ma ọ bụ ọchịchọ nke ndị mmadụ na-eribiga ihe ókè mgbe ha na-eri nri ndị dị obere abụba n'ihi nkwenye na ọ adịghị eme abụba. 

Okwu ahụ, nke pụtara dị ka mmeghachi omume maka usoro nri na 1980 na 1990,  na-ejikwa maka mmetụta yiri ya na ntọala ndị ọzọ, dị ka oriri ume, ebe a na-akpọ ya " mmetụta nlọghachi azụ ". Dị ka ihe atụ, dị ka otu nnyocha e mere n’afọ 2008 si kwuo, ndị nwere ígwè ọrụ ịsa ahụ na-arụ ọrụ nke ọma na-asakwu uwe. Lucas W. Davis: 'Durable Goods and Residential Demand for Energy and Water: Evidence from a Field Trial'. The RAND Journal of Economics Vol. 39, No. 2 (Summer 2008), pp. 530-546. https://www.jstor.org/stable/25474381  Ndị nwere ọkụ na-arụ ọrụ ike na-ahapụ ha ogologo oge, ma tụfuo 5-12% nke nchekwa ike a na-atụ anya nke 80%. 

 Hụkwa 

 Ọchịchọ butere
 Jevons paradox
 Iwu Parkinson
 Nkwụghachi ụgwọ ihe egwu

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