How Much Can You Really Count on Your Partner?

When you think about what attracts you to your partner, what are the main qualities that come to mind? Do they include attributes that you see as similar to your own, or do a pleasing set of contrasts immediately stand out? There is an age-old debate in the romantic relationship literature that contrasts the “like vs. like” with the “opposites attract” schools of thought. You can pile up evidence for either argument based on the literature.

Part of the reason that both arguments can be made is that no two people are ever completely alike or different. In the case of personality, one person can be high on introversion and the other more extraverted, but there are other traits as well, ranging from conscientiousness (e.g., slob vs. neatnik) and agreeableness (e.g., nice vs. nasty). If you extrapolate to behaviors, the possibilities extend out even further. You may be athletic, and your partner has no prowess whatsoever. Add values to the mix, such as being politically liberal or conservative, and you now have even more head-scratching to do.

The Role of Wishful Thinking in Partner Perception

All of this confusion could potentially be sorted out if you think about one organizing principle that comes into play when people fall in love with each other. If you love someone, differences can readily turn into similarities or, at least, perceived similarities. You may choose your partner for a variety of reasons and, once having done so, start the cognitive wheels turning, where you smooth out the rough spots that reflect potential areas of friction.

Personality and other qualities aside, one important area of partner similarity-dissimilarity involves the help that partners provide (or think they provide) to each other. You might be able to put up with all kinds of differences as long as you feel your partner is someone who is “there for you.” If your partner constantly thwarts your goals, you’ll become resentful, and, over time, the relationship may begin to unravel.

The combination of goal pursuit and partner perception serves as the focus of a recent study by University of Pittsburgh’s Emily O’Brien and Amanda Forest (2024). Addressing the importance of shared partner goals, they note that “Goal pursuers report feeling more appreciation for instrumental (vs. non-instrumental) romantic partners and goal pursuers who perceive that their partners are more (vs. less) instrumental to their goals report increased relationship satisfaction.” The key word here is “perceive.” Given that perception and reality don’t always coincide, for shared goals to work, partners must regard each other as having their best interests in mind.

This is where the ideas of similarities vs. differences come into play. Seeing your partner as sharing your goals would suggest that it’s most important for your relationship quality to be on the same page, or at least be perceived as on the same page. Flipping this around, if your relationship is a happy one, you’ll be more likely to perceive your partner as sharing your goals even if your partner does not.

Testing Relationship Satisfaction and Perception of Shared Goals

Having demonstrated with existing couple data that the relationship quality to perception of shared goals model could be supported, the authors then went on to conduct a scenario-based experimental test. Through imagined situations, they could manipulate the “real” vs. perceived instrumental qualities shown by a romantic partner. They also were able to find out whether perceiving one’s partner as sharing one’s own goals would lead people to reciprocate in kind.

The 261 online participants (average age = 40 years) read stories in which they were instructed to imagine themselves as the protagonist. They received three goals: to advance in their career, improve their overall health/fitness, and explore new hobbies/social opportunities. In one condition, the details were adjusted so that the partner’s behavior was instrumental to the goals (e.g., going for a run together) or was ambiguous (e.g., partner suggests going shopping together). Then they rated how instrumental they thought the partner was, as well as whether they would help their partners in return.

The findings showed that, consistent with predictions, partners who rated their relationship quality higher also perceived their partner as being more instrumental to their goals. In turn, the perception that the partner was instrumental also predicted greater likelihood of behaving in a way that would further their partner’s goals.

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Turning Instrumentality Into Satisfaction

This feedback loop of relationship satisfaction as a predictor of partner perceptions, which, in turn, predicts greater mutuality, suggests just how important it is to perceive your partner in a positive light, regardless of how your partner behaves.

Because people who try to help their partners achieve their goals must invariably share those goals, the U. Pittsburgh study shows just how important similarity can be in promoting relationship success. However, it’s not how similar partners are but how much they think their partner shares their values that sets the whole process in motion. Remember that even in ambiguous partner instrumentality situations, the process still operated. As the authors concluded, “people in happy, high-quality relationships are more likely to 'see' their partner as helpful towards their goal pursuit.”

Imagine that you want to become healthier, as in the scenario from the study, and are hoping your partner will help you achieve this goal. If the relationship is a loving one, your partner may literally do nothing more than sit down and have dinner with you for you to regard your partner as being helpful. If things are rocky, though, you’ll be more likely to see your partner as interfering with your goal. The simple act of offering an extra portion of mashed potatoes could cause you to believe your partner wants to undercut you.

To sum up, sharing values and goals is clearly important to relationship success. However, to get there, it may be necessary for you to add a little similarity bias in the perception of your partner.