A [[Cognitive Biases|cognitive bias]] whereby people put a disproportionately high value on products they partially created, discovered by [Ariely et al](https://www.hbs.edu/ris/Publication%20Files/11-091.pdf). Participants were asked to assemble simple items, such as IKEA storage boxes, origami figures, and Lego sets. And then: > We found that builders bid significantly more for their boxes (M = $0.78, SD = 0.63) than non-builders (M = $0.48, SD = 0.40), t(50) = 2.12, p < .05. Thus, while both groups were given IKEA Effect - 9 - the chance to buy the same product, those who assembled their own box valued it more than those who were given the chance to buy an identical pre-assembled box. We observed similar effects for subjective ratings of liking for the IKEA box, with builders reporting greater liking (M = 3.81, SD = 1.56) than non-builders (M = 2.50, SD = 1.03), t(50) = 3.58, p < .001 The implication is that [[Bring people along|bringing people along]] is an effective strategy both in personal and professional life. #published 2025-01-25