The Science of Communication: What Builds Connection and What Breaks It

Why Arguing More Helps You Fight Less and 10 Universal Triggers That Sabotage Every Couple

We need to talk.

Often, these are dreaded words, but they don’t need to be. Better communication leads to better connection, which makes conversations less intimidating. Chances are, your communication abilities could use some work. It’s important to build your skills because you’re going to need them.

Every relationship problem has the same solution: Communication.

Fact: Every couple experiences conflict. That’s not a bad sign, it’s just reality. Anytime you bring together two independent adults with their own thoughts and feelings in any type of partnership, there will be friction. Differences of opinion are inevitable. One person will load the dishwasher correctly, and the other person never will. Disagreements are merely a side effect of a relationship where partners share power and are comfortable in voicing their opinion. Avoiding arguments because you’re afraid of the repercussions…that’s a problem.

Without arguments there is no relationship progress.

Argue More to Fight Less

I know what you’re thinking… "Arguing MORE is the OPPOSITE of what I want." Or perhaps, “I don’t like conflict.” Great! Virtually NO ONE wants or likes conflict. But conflict, like taxes, is unavoidable. Trying to dodge it, creates problems. Instead, view conflict as an opportunity to learn your partner’s perspective or help comfort hurt feelings. When you have a genuine willingness to address minor issues, it prevents annoyances from escalating into major problems.

Quality communication helps keep small problems small.

This doesn't mean you should seek confrontation. There will be no need. Instead, partners simply need to feel comfortable openly communicating uncertainties, pet peeves, annoyances, and listening with curiosity (not defensiveness) when your partner shares concerns. That doesn’t mean these conversations will be completely comfortable. In fact, some will feel a bit awkward. You’ll want to avoid them. Don’t.

The Biological Cost of Silence: Why Avoiding Conflict Spikes Stress

Here’s where the research gets a little weird. A study found that when couples avoided an argument they felt better that day (Birdie et al., 2015). That sounds like a GREAT reason to avoid conflict. However, before your embrace your conflict avoiding tendencies, the researchers also found that the next day, those who skipped the argument had worse psychological well-being and increased cortisol (which causes issues like weight gain, mood swings, and trouble sleeping). Not good.

Similarly, when couples avoided important potentially conflict-inducing topics like their relationship’s future they reported worse communication, were less happy, and were less dedicated to their relationship 7 weeks later (Clifford et al., 2017). Really not good.

The conversations we avoid now, make the relationship worse later.

Here’s how to avoid allowing minor relationship issues to turn into something major:

• If you wonder about something your partner said. Ask.

• If your partner doesn’t make you feel heard…discuss it.

• If you're upset...speak up (a good partner wants to know).

Each of these strategies is better than the alternative of endlessly playing out scenarios in your mind and always wondering. Rumination is a breeding ground for doubt and anxiety.

Strong couples discuss their problems. But the best couples don’t make everything a problem. It’s essential to differentiate between genuine problems (generally non-negotiable dealbreakers) and minor issues that can be let go to maintain harmony (annoyances). Also, if the issue is about personality, the past, or parents, those things aren’t highly resistant to change or easy solutions. Know that going in.

Want to go deeper?
I share the core ideas here for free.
Paid subscribers get the fuller toolkit: longer evidence-based essays, concrete tools you can actually apply, plus scripts and strategies for making dating and relationships more fulfilling and access to the full archive.

Free posts = the key ideas.
Paid posts = the full reasoning, practical tools, and step-by-step ways to put them into practice.

If this post was useful and you want to build these skills more systematically, the paid version is there. If not, no worries, I’ll still be writing here every week.

What Are We Fighting About? Top Relationship Conflict Triggers

Few of us know what’s REALLY going on in other people’s relationships. This is where researchers have a major advantage. We’re nosy, we ask a lot of questions, and often about topics that are borderline rude such as: How much do you guys fight? What really annoys your partner? What are your biggest conflict triggers?

Gathering answers from lots of study participants helps you know if your relationship is “normal.” It also helps you “look around corners” a bit to know what may be coming so you can address issues before they escalate.

Time to peek inside others’ romantic relationships to see what’s really going on behind closed doors. What are other couples arguing about? (Note that I created this list combining findings from several studies/cultures.; e.g., Buss, 1989, Bevan et al., 2014, Dillon et al., 2015, Meyer & Sledge, 2021)

Top 10 Relationship Conflict Triggers

1. Poor Communication– Misunderstandings, tone issues, or simply not feeling heard. This consistently ranks as the #1 conflict driver across multiple studies. Notice how bad communication is the number one problem, but also the solution (to this, and all the other, problems)

1. Jealousy & Trust Issues– Includes emotional insecurity, suspicion of infidelity, or discomfort with outside relationships. Buss and Bevan both identified this as a major source of conflict.

2. Neglect & Emotional Unavailability– When one partner feels ignored, unsupported, or like they're “on their own” in the relationship. Often linked to emotional distance or lack of quality time.

3. Inconsiderate or Problematic Behavior– From not cleaning up after yourself to more persistent, annoying habits—this includes quirks that wear on the relationship over time.

4. Sexual Disconnect– Differences in libido, disinterest in intimacy, or feeling sexually rejected. Both Buss and later studies noted this as a highly sensitive area.

5. Power Struggles & Decision-Making Conflicts– Disagreements over who makes decisions, perceived control, or unequal contributions to running the household.

6. Division of Labor & Chores– One of the most universally reported triggers, especially when tasks are unevenly shared or go unacknowledged.

7. Financial Stress & Spending Disagreements– Tensions around money, budgeting, financial priorities, or one partner’s spending habits—closely tied to feelings of security and trust.

8. Clinginess, Possessiveness, or Overdependence– When one partner demands too much time or control, leading to feelings of suffocation or loss of independence.

9. Mood Swings & Emotional Instability– Frequent irritability, unpredictable reactions, or emotional volatility can make day-to-day interactions tense and conflict-prone.

The key insight? Most relationship conflicts stem from predictable patterns around respect, attention, reliability, and boundaries, meaning many of your "unique" fights are actually universal human struggles. Since lots of couples argue about these things, the key differentiator between successful and unsuccessful couples is how they communicate.

The Do-Nothing Trap

If you avoid addressing relationship issues as they arise, your brain transforms into a grievance collector, meticulously cataloging every slight and building an elaborate mental case file. This creates a dangerous neural network where one minor incident triggers a cascade where the entire accumulated database of resentments is ready for deployment.

Eventually, you launch the nuclear option: Unleashing everything at once in hopes that sheer volume of evidence will overwhelm your partner into submission.

Weirdly, this never results in your partner admitting, “You know what, you were clearly right. I appreciate all of the well-thought out evidence you provided. Thank you for sharing it all at once.”

Instead, the “do-nothing until you say-everything strategy” backfires catastrophically: your partner feels attacked and becomes defensive. Even if they genuinely want to address problems they can't navigate your chaotic data dump. Now, what could have been a focused conversation devolves into a rambling battle where winning becomes more important than solving anything. The cruel irony is that your methodical mental preparation, which felt so rational and thorough, actually sabotages the very resolution you're seeking. Everyone loses.

We Think Conflict Will Be Worse Than It Is

We rarely seek out negative emotions or experiences. Conflict qualifies. We hesitate and procrastinate having honest conversation because we fear our partner or ourselves, reacting negatively. But we’re wrong.

Across several studies, researchers found that “people’s expectations are systematically miscalibrated such that they overestimate how negatively others respond to confrontation” (Dungan & Employ, 2024). In other words, we think those conversations will be worse than they are. We’re too pessimistic. Unfortunately those mistaken beliefs prevent us from talking to our partner, which means we miss the opportunity at repairing and strengthening the relationship. However, if we approach those conversations optimistically, not only will tour conversations’ quality improve, but our relationship quality will as well.

Tough conversations now, better relationships later.

Conclusion

Conflict in relationships is not only inevitable, it’s necessary for growth and deeper connection. When couples address issues early with high-quality communication, they prevent minor problems from becoming major ruptures. The key isn’t to avoid arguments, but to approach them skillfully, with empathy, curiosity, and the shared goal of strengthening the relationship.

Do you know someone who loves psychology and/or relationships? Sharing is caring.

Here’s what you can look forward to:

The Psychology of Relationships 101 Curriculum

1. Is It Just Me? Or, Is This How Relationships Are?

2. Clarity Attracts Chemistry: The Power of Knowing Who You Are

3. The Flirting Formula: Science-Backed Strategies for Connection

4. The Science of Attraction: It’s Not Just Looks, It’s Psychology

5. The Science of Love: From Instant Chemistry to Lasting Connection

6. The Truth about Attachment: The Science of Secure Connection

7. Sex Ed 2.0: The Conversations We Missed

8. The Science of Communication: What Builds Connection and What Breaks It

9. When the Spark Fades: Feeling Adrift in Love

10. The Erosion of Intimacy: Dealing with the Dark Side of Relationships

11. Happily Ever After or Single Again: Does My Relationship Have a Future?

12. The Foundation of Forever: Simple Strategies for Enduring Connection

13. Break Up Doesn’t Have to Leave You Broken

14. The Connection Code: Your Keys to Unlocking a Love That Lasts

References

Agnew, C. R., Van Lange, P. A. M., Rusbult, C. E., & Langston, C. A. (1998). Cognitive interdependence: Commitment and the mental representation of close relationships. Journal of Personality and Social Psychology, 74(4), 939–954. https://doi.org/10.1037/0022-3514.74.4.939

Bevan, J. L., Hefner, V., & Love, A. (2014). An exploration of topics, conflict styles, and rumination in romantic nonserial and serial arguments. Southern Communication Journal, 79(4), 347–360.

Birditt, K. S., Nevitt, M. R., & Almeida, D. M. (2015). Daily interpersonal coping strategies: Implications for self-reported well-being and cortisol. Journal of Social and Personal Relationships, 32(5), 687-706.

Buss, D. M. (1989). Conflict between the sexes: Strategic interference and the evocation of anger and upset. Journal of Personality and Social Psychology, 56(5), 735-747.

Clifford, C. E., Vennum, A., Busk, M., & Fincham, F. D. (2017). Testing the impact of sliding versus deciding in cyclical and noncyclical relationships. Personal Relationships, 24(1), 223–238.

Dillon, L. M., Nowak, N., Weisfeld, G. E., Weisfeld, C. C., Shattuck, K. S., Imamoğlu, O. E., Butovskaya, M., & Shen, J. (2015). Sources of marital conflict in five cultures. Evolutionary Psychology, 13(1), 1–15.

Dungan, J. A., & Epley, N. (2024). Surprisingly good talk: Misunderstanding others creates a barrier to constructive confrontation. Journal of Experimental Psychology: General, 153(3), 779–797. https://doi.org/10.1037/xge0001528

Kashdan, T. B., McKnight, P. E., Fincham, F. D., & Rose, P. (2011). When curiosity breeds intimacy: taking advantage of intimacy opportunities and transforming boring conversations. Journal of Personality, 79(6), 1369–1402. https://doi.org/10.1111/j.1467-6494.2010.00697.x

Meyer, D., & Sledge, R. (2021). The relationship between conflict topics and romantic relationship dynamics. Journal of Family Issues. https://doi.org/10.1177/0192513X21993856

Rogers, C. R. (1951). Client-centered therapy: Its current practice, implications and theory. Boston: Houghton Mifflin.

Venaglia, R. B., & Lemay, E. P. Jr. (2019). Accurate and biased perceptions of partner’s conflict behaviors shape emotional experience. Journal of Social and Personal Relationships, 36, 3293-3312. doi.org/10.1177/0265407518818771