Michelle Larva profile picture

Michelle
Larva

Doctoral Researcher, Psychology
Doctoral Researcher, INVEST Research Flagship Centre
Finnish PI of the international Multiple Relationship Maintenance Scale (MRMS) Project (Main PI: Dr. Justin K. Mogilski)

Areas of expertise

intimate relationships
consensual non-monogamy (CNM)
multi-partnering
relationship maintenance
sexual health and well-being
evolutionary psychology
family relations and parenting
scale development
social science research
survey methodology
quantitative and mixed methods

Biography

Born in Finland, raised in Texas. Before I came to the University of Turku, I got my Master's in Educational Psychology (Human Development and Family Studies) from the University of North Texas, and I worked in applied family science and early childhood policy in Texas. There, I co-founded a family life education practice that offered evidence-based premarital and relationship education to couples. I also coordinated a countywide infant and toddler developmental screening initiative, and worked as a project manager for an early learning collaborative, building partnerships across early childhood organisations. This background in education, policy, advocacy and cross-sector collaboration still shapes how I think about the real-world relevance of relationship research.

I am the Finnish principal investigator of the international MRMS project. In Finland, I have been responsible for the project’s ethical review, participant recruitment, data collection, data management, and research communication. My work has been published in The Journal of Sex Research, Archives of Sexual Behavior, and The Journal of Social and Personal Relationships, and I have presented at international conferences including SSSS, IASR, HBES and ESFR.

In my work, I am committed to open science, and passionate about viewpoint diversity and conducting rigorous research that makes the soft sciences harder.

Teaching

I teach introductory courses on quantitative research methods and statistics, diverse intimate relationships, and evolutionary perspectives in the social sciences. I co-supervise master’s theses in psychology.

Research

In my doctoral research, I studied consensually non-monogamous relationships and what makes them work, using an evolutionary psychological and relationship science perspective. I have examined how relationship maintenance behaviours, sexual well-being and relationship satisfaction differ between people with one intimate partner and people with several, as well as what predicts stability in these relationships.

Apart from diverse intimate relationships, my research interests include dating and relationship formation, relationship stability, parenthood and fertility, emerging adulthood, parenting, child development, family structures, and their intersections with health and well-being.

Publications

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How do people maintain consensual non-monogamy? An international development and validation of the Multiple Relationships Maintenance Scale (MRMS) (2026)

Mogilski, Justin; Miller, Geoffrey; Jonason, Peter Karl; Grunt-Mejer, Katarzyna; Varella Valentova, Jaroslava; Balzarini, Rhonda; Rodrigues, David; Sheff, Elisabeth; Al-Shawaf, Laith; Csajbók, Zsófia; Thomas, Andrew; Dávid-Barrett, Tamás; Giosan, Cezar; Kruger, Daniel; Ley, David; Lehmiller, Justin; Schechinger, Heath; Moors, Amy; Ciaffoni, Stefano; Larva, Michelle
(A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä )