Why (Some) Substitutes Don't Satisfy Us

The more similar they are, the greater disappointment they evoke.

Have you ever craved a full-fat chocolate milkshake but opted for a diet frozen yogurt because you wanted to "be good"? But chances are that scarfing down the yogurt wasn’t just less pleasurable; it may actually have increased your craving, amplified your dissatisfaction, and set you up for a binge.

According to a new study led by Rochester University’s Melissa Sturge-Apple, this happens because the substitute food you chose too closely resembled what you actually wanted. As a result, you spent every bite registering just how far it fell short from what you truly craved.

Sturge-Apple’s team whetted hundreds of adults’ and undergraduates’ appetites for a particular brand of gourmet chocolate by having them taste test tiny pieces of it. Over the course of several experiments, the team repeatedly split participants into two groups—those who were invited to snack on similar but inferior quality substitutes for the high-end chocolate (i.e., knock-off versions of the chocolate or chocolate-covered peanuts) and those who were invited to snack on categorically different snacks (i.e., honey granola bars). The goal was to test which substitute food item did a better job of satisfying participants’ lab-induced hankering.

What the researchers found was that the similar but not quite up-to-snuff swaps left participants dissatisfied and still wanting the gourmet treat just as much (if not more), while the dissimilar option successfully quashed their pre-primed cravings.

In a follow-up study, participants who’d snacked on subpar substitutes or dissimilar swaps were surprised with a bowl full of the gourmet chocolate they’d initially been induced to crave. Upon being told to “eat as much as you like,” those who’d recently settled for similar but not quite as awesome alternatives ate far more of the chocolate than those who’d been sated with a non-chocolate distraction.

Sturge-Apple’s team believes that the reason too-similar substitutes fail to curb most peoples’ cravings—and eventually even make us eat way more than we otherwise would have—is because we can’t help comparing the replacement to the original. Because a knock-off chocolate brand (or, in other cases, a “diet” or “low-cal” treat) resembles what we actually want, we expect it to sate us just as well. But that substitute’s unlikeness in flavor dashes our expectations and compels us to seek the satisfaction we really yearn for elsewhere—if not through quality, then through quantity. (Cue the binge.)


Despite our assumptions that we’ll be content with an item similar to the item we truly desire, Sturge-Apple et al.’s findings suggest we’re much better off seeking a novel treat if we can't—or won't allow ourselves to—secure what we really want.

“Contrary to participants’ belief that within-category substitutes are more satisfying,” Sturge-Apple and her team reported in the journal Psychological Science, “a cross-category substitute more effectively reduced cravings for a desired stimulus than did a within-category substitute…Indeed, consuming the cross-category substitute was as effective at reducing cravings for the desired stimulus as consuming the desired stimulus itself.”

She reasons that the lack of satisfaction received from so-called “cross-category substitutes” originates from their lower likelihood of “evoking a negative comparison to the desired stimulus.” (Dissimilar foods, in other words, aren’t likely to increase our hopes of feeling satisfied. Rather, a novel item may inspire a new hankering, so that all we have to do to feel satisfied is eat what’s newly in front of us.)

Sturge-Apple’s team believes that the effects of reaching for similarity or novelty in our ongoing hunt for satisfaction extend well beyond the realm of food. They point toward “consequential domains, such as jobs, benefits, and consumer goods” as offering equal fluctuations of satisfaction, depending on how we strategize when we can’t get precisely what we want. For example, if you repeatedly can’t land the dream position in the company you work for, you may be better off—happier—applying to work at a different company altogether. Or if you can’t seem to find joy in new romantic relationships because you’re comparing each partner to your idealized ex, then maybe it’s time to seek out a different “type."

“Of course, cross-category substitutes have to meet the same needs or serve the same function as the desired stimulus,” Sturge-Apple et al point out, lest you veer too far from what you’re looking for and just end up getting lost. “For example,” the researchers offer, “we assume that people who want a 60-inch television will be more satisfied if they choose a 42-inch television as its substitute rather than an expensive coffeemaker.”

Ditto for jobs and dating: It's probably not a helpful solution to take a new gig doing something you’re not even sure you like as a response to not getting promoted doing what you love. It will be equally unsatisfying to go on a rampage of one-night stands if you’re truly looking for a meaningful romantic connection. (Though some studies suggest that rebounds can help us get over breakups.)

Whether it’s food, love, work, or any other existential arena that forces you to accept that you can’t always get exactly what you want, Sturge-Apple’s findings suggest that the key to keeping your level of contentment high—and possibly avoiding binges, bad romances, and dead-end jobs—is to seek alternate ways to fulfill your needs and desires, even if you might not immediately consider these to be perfect solutions.

However, the larger takeaway is that comparisons breed disappointment: Whether you're measuring a substitute food against an idealized but unattainable one, a new partner against a romanticized ex, or the reality of a career against the imagined trajectory you thought it would take.

But in cases when obtaining a novel means of satisfaction isn't possible, you might benefit even more from the radical act of acceptance. If what (or who) you end up with falls short of your expectations, you're better poised to experience that thing or person's joys, qualities, and potentials for satisfaction. Crosby Stills and Nash may have said it best: "If you can't be with the one you love, love the one you're with." Or just eat what's in front of you and get over the impulse to compare it to something else.

Katherine Schreiber and Heather Hausenblas Ph.D.    Posted Jun 14, 2016

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