Nowadays people avoid meeting others. We could buy products through mobile phones and order food at screens inside restaurants. A recent virus outbreak even encourages us to stop shaking hands with strangers.

Ironically, the more we avoid meeting others, I believe, the easier others sell their products to us. When I visited Prezzemolo & Vitale, a local grocery store in Notting Hill in London, an employee brought a lump of meat on a board, cut it into thin slices, and passed them over to passers by. Interestingly, most of those who tried samples bought several pieces of different types of meat. I was not exception.

When he looked at me with a slice of meat, I inferred, he made an effort to approach me. This inference is rarely made when I stand in front of machines such as mobile phones or kiosks. I conclude that when we meet people and machines, we may have different inference: people make effort to come close to us whereas machines do not. This inferred effort may play a critical role in determining our next behavior such as buying a product.

Morales, A. C. (2005). Giving Firms an “E” for Effort: Consumer Responses to High‐Effort Firms. Journal of Consumer Research, 31(4), 806–812.

This research shows that consumers reward firms for extra effort. More specifically, a series of three laboratory experiments shows that when firms exert extra effort in making or displaying their products, consumers reward them by increasing their willingness to pay, store choice, and overall evaluations, even if the actual quality of the products is not improved. This rewarding process is defined broadly as general reciprocity. Consistent with attribution theory, the rewarding of generally directed effort is mediated by feelings of gratitude. When consumers infer that effort is motivated by persuasion, however, they no longer feel gratitude and do not reward high-effort firms.

Effort not only dictates our behavior. It helps us enjoy what we do.

Norton, M. I., Mochon, D., & Ariely, D. (2012). The “IKEA Effect”: When Labor Leads to Love. Journal of Consumer Psychology, 22(3), 453–460.

In four studies in which consumers assembled IKEA boxes, folded origami, and built sets of Legos, we demonstrate and investigate boundary conditions for the IKEA effect-the increase in valuation of self-made products. Participants saw their amateurish creations as similar in value to experts’ creations, and expected others to share their opinions. We show that labor leads to love only when labor results in successful completion of tasks; when participants built and then destroyed their creations, or failed to complete them, the IKEA effect dissipated. Finally, we show that labor increases valuation for both “do-it-yourselfers” and novices.