Every feature in Tend is grounded in decades of relationship research. Here are the books, papers, and frameworks that shape how the app works.
We didn't invent these ideas. Researchers like John Gottman, Gary Chapman, Marshall Rosenberg, Robin Dunbar, and Barbara Fredrickson spent decades studying what makes relationships thrive. We built Tend to put their findings into practice — one small action at a time.
Gottman's research on 650+ couples found that partners who keep updating their knowledge of each other's inner world — dreams, stressors, joys — build the foundation for lasting friendship and intimacy.
Researchers found that pairs who shared personal questions for just 45 minutes felt significantly closer than pairs who made small talk. Structured mutual vulnerability — even in small doses — rapidly builds intimacy.
A bid is any attempt to connect — a question, a look, a touch. Couples who stayed happy turned toward each other's bids 86% of the time. Couples who later divorced? Just 33%.
Love isn't a permanent state — it's built from micro-moments of shared positive emotion. Brief acknowledgments like "thinking of you" create measurable changes in well-being for both people.
People give and receive love in different ways. Each nudge is tailored to how a person feels loved — their love language, your communication style, and what's worked before.
A 50-year review of research found that families who maintain consistent rituals report higher relationship satisfaction. Shared rituals create emotional stability and a sense of "us."
Gottman found that four communication patterns — criticism, contempt, defensiveness, and stonewalling — predict relationship failure with over 90% accuracy. Contempt alone is the single greatest predictor of divorce.
When Tend helps you reframe a conflict or draft a sensitive message, it uses NVC's four-step framework: observe without judging, name the real feeling, identify the need behind it, and make a request — not a demand. This replaces blame with vulnerability, which research shows reduces defensiveness and opens dialogue.
Relationships thrive on small, frequent actions — not grand gestures. Gottman calls this "Small Things Often": just 6 extra hours per week of intentional moments can transform a relationship.
Gottman's research shows that relationships don't thrive on grand romantic gestures — they thrive on small, frequent moments of connection. Just six extra hours per week of intentional interactions can transform a relationship. Caring streaks in Tend track your weekly consistency, reinforcing the habit that matters most.
Anthropologist Robin Dunbar found that humans can only maintain about 5 intimate relationships and 15 close ones. The quality of your closest relationships has a bigger impact on health and happiness than almost any other factor.
A real apology names specifically what you did, acknowledges the impact without minimizing, offers no excuses, and expresses what you'll do differently. "I'm sorry you feel that way" is not an apology — it's a deflection.
Shelly Gable's research found that how partners respond to each other's good news predicts relationship satisfaction, trust, and intimacy more than how they handle conflict. Active, enthusiastic responses — asking curious questions, amplifying the emotion — strengthen the bond.
Self-Determination Theory shows that people are more likely to act when suggestions support their autonomy rather than control them. "When you're ready" works better than "you should." Every nudge in Tend uses autonomy-supportive language.
If any of these ideas resonate, we encourage you to read the original books. Tend can nudge you in the right direction, but understanding the research behind it will transform how you think about every relationship in your life.