RESEARCH_FILE
The Science of Destiny vs. Growth Beliefs
When a relationship hits friction — an argument that won't resolve, a phase where closeness dims — people split into two camps based on a belief most of them don't know they hold.
SEE THE PRACTICE
Turn a thought this research explains into one clear move.
THE THOUGHT
“What if I don't really love them”
YOUR RECORDED RESPONSE
“The thought is here, but it is not a conclusion.”
ONE PRIVATE MOVE
Take two minutes to write three ordinary moments from the last time you were together—something you noticed, something you laughed at, something you appreciated. Keep it factual and private, then close the note.
Destiny believers read friction as diagnostic: if this were the right person, things wouldn't be this hard. Growth believers read the same friction as ordinary: all relationships require work, and working through difficulty is how bonds deepen. Psychologist C. Raymond Knee's research on implicit theories of relationships, published in 1998, showed these aren't just personality styles — they predict how people cope with problems, whether they invest or bail, and how long their relationships last. The script 'right relationships just work' turns out to be one of the cleaner predictors of avoidance coping and early exit that relationship science has found.
How the science changed
- 1988
Carol Dweck and colleagues publish foundational work on implicit theories of intelligence — fixed ('entity') vs. malleable ('incremental') — showing that believing ability is fixed leads to helpless responses to setbacks, while believing it is learnable leads to mastery-seeking. This framework becomes the template Knee later applies to relationships. ↗
- 1998
C. Raymond Knee publishes 'Implicit Theories of Relationships' in JPSP — the first empirical paper to assess destiny and growth beliefs as distinct dimensions and test them against relationship initiation, coping, and longevity. Destiny believers showed steeper disillusionment after early problems; growth believers maintained investment. ↗
- 2002
Franiuk, Cohen and Pomerantz test soulmate vs. work-it-out beliefs in a large undergraduate sample and find that soulmate believers — who hold that the right partner solves all problems — report lower relationship quality when their partner does not match a preexisting ideal, precisely because friction signals a mismatch rather than ordinary relational territory. ↗
- 2003
Knee, Nanayakkara and colleagues show that destiny beliefs predict avoidance coping under relationship stress — people who believe relationships are predestined tend to disengage when problems arise rather than addressing them, while growth believers are more likely to use active, constructive problem-solving strategies. ↗
- 2003
Knee, Patrick and Lonsbary review the implicit theories of relationships literature and establish that destiny and growth beliefs are empirically separable dimensions — not opposite ends of one spectrum — and that growth beliefs are more consistently linked to relationship maintenance behaviors and higher long-term satisfaction. ↗
- 2013
The Oxford Handbook of Close Relationships consolidates the destiny/growth belief framework as a recognized construct in relationship science, summarizing evidence that growth believers experience conflicts as developmentally normal while destiny believers tend to interpret the same conflicts as compatibility signals — data that inform how friction is read and responded to. ↗
- 2021
Bell and McNulty extend implicit theories research to sexual satisfaction, finding that growth beliefs predicted maintenance of sexual satisfaction over time, while destiny beliefs were linked to faster decline — consistent with the broader pattern that the 'it should just work' frame leaves people without strategies for the ordinary wear that affects every relationship. ↗
What people believe vs. what the data shows
The belief“If you have to work hard at a relationship, it means you're with the wrong person.”
The dataKnee's 1998 research found growth believers — who expect to work through difficulty — showed higher long-term relationship quality than destiny believers who interpreted the same difficulty as a sign they'd chosen wrong. Expecting relationships to require effort is not a pessimistic view; the data suggest it's the accurate one. ↗
The belief“Soulmate beliefs help you hold out for the right person — they raise your standards, which leads to better relationships.”
The dataFraniuk, Cohen and Pomerantz found soulmate believers reported lower relationship quality when their partner didn't match a preexisting ideal — not because their partner was objectively worse, but because the belief framed any gap as fatal incompatibility rather than ordinary human difference. The standard didn't select for better partners; it filtered for worse interpretations of good ones. ↗
The belief“Destiny and growth beliefs are just personality types — you're one or the other and it doesn't change.”
The dataKnee, Patrick and Lonsbary's review established that these are beliefs — implicit theories — not fixed traits. Research in the broader mindset tradition (Dweck) shows that people's theories about whether qualities are fixed or malleable can be shifted through information and experience. The practical implication: what you believe about how relationships work is itself something that can change. ↗
The belief“Believing in destiny just means you're romantic — it has no real effect on how you handle problems.”
The dataKnee and Nanayakkara found destiny beliefs were a significant predictor of avoidance coping under relationship stress — specifically disengaging rather than problem-solving when friction arose. This isn't a romantic disposition; it's a coping pattern with measurable downstream effects on whether problems get resolved or compound. ↗
The belief“Growth beliefs are about settling — accepting a relationship as 'good enough' even when it's not right.”
The dataKnee's original work and subsequent reviews show growth beliefs predict higher quality and more maintenance behavior — not passive tolerance of bad fits. The distinction is between using friction as a diagnostic test of compatibility (destiny logic) versus treating friction as addressable material (growth logic). Growth believers don't lower their standards; they engage with difficulty rather than exiting because of it. ↗
TEST_YOURSELF · How well do you know this science?
01 In C. Raymond Knee's 1998 research, what did destiny believers do differently from growth believers when their relationship hit early friction?
Knee's 1998 JPSP paper found that destiny believers — who expect the right relationship to feel right with minimal effort — showed steeper disillusionment and greater disengagement when early friction arose, compared to growth believers who maintained investment through the same friction. source ↗
02 What did Franiuk, Cohen and Pomerantz find about people who hold 'soulmate' beliefs?
Franiuk, Cohen and Pomerantz found soulmate believers reported lower relationship quality when their partner didn't match a preexisting ideal. The belief itself — not the partner's objective quality — drove the outcome, because friction was interpreted as fatal incompatibility rather than ordinary relational territory. source ↗
03 How did Carol Dweck's foundational work on implicit theories of intelligence connect to Knee's research on relationships?
Dweck's work on fixed ('entity') vs. malleable ('incremental') theories of intelligence showed that believing an ability is fixed leads to helpless responses to setbacks, while believing it is learnable leads to mastery-seeking. Knee applied this same logic to relationships — whether you see compatibility as fixed and discoverable (destiny) or as something that develops through effort (growth). source ↗
04 What specific coping pattern did Knee and Nanayakkara's research find that destiny beliefs predicted under relationship stress?
Knee and Nanayakkara found destiny beliefs were a significant predictor of avoidance coping under relationship stress — disengaging rather than problem-solving when friction arose. This pattern is consistent with the logic of destiny beliefs: if the relationship isn't working without effort, effort won't fix it, so exiting becomes more appealing than engaging. source ↗
05 Bell and McNulty's 2021 extension of implicit theories research found that growth beliefs — but not destiny beliefs — predicted what outcome over time?
Bell and McNulty found that growth beliefs predicted maintenance of sexual satisfaction over time, while destiny beliefs were linked to faster decline. This extends the implicit theories framework beyond coping style into a domain — sexual satisfaction — where the same mechanism appears: believing the relationship requires ongoing investment leads to better long-run outcomes than believing it should just work. source ↗