Sincefoodon a plateisessentially a circleofstuffsurroundedbythecircleoftheplate's edge, thisillusioncanmakethesameportionlookbiggerdependingonthesizeoftheplate.
A 2012 studyinthe "JournalofConsumerResearch" confirmedthisbyshowingthatpeopleoverestimateportionswhenthey'reusinglargeplates, servingthemselvesmorethantheyreallywanted.
Withsmallplates, theyservethemselvesless.
TheDelboeufillusionissoconvincingthatstudieshavefoundyou'llactuallyfeelmorefullwhenyoueat a mealfrom a smallerdish.