Open vs. Closed Adoption: What Research Shows About Outcomes

The question comes up in nearly every adoptive parent support group, often framed as anxiety: “Are we doing the right thing by keeping contact with her birth mother?” The worry runs in the other direction too — parents who chose or were assigned a closed adoption wondering if the secrecy harmed their child. Both sets of parents are asking the same underlying question: does the structure of adoption — open or closed — actually matter to how the child turns out?

It does. And researchers have been tracking the answer for more than three decades.

Key Takeaways

• Adoptees in open adoptions report stronger identity clarity and fewer unanswered questions about their origins, according to a 20-year longitudinal study led by Harold Grotevant and Ruth McRoy.
• Open adoption does not increase confusion about family roles or reduce adoptive parent attachment — the research consistently finds the opposite: secure adoptive relationships coexist with birth family contact.
• Closed adoption secrecy is associated with higher rates of identity confusion in adolescence and more intense genealogical searching in adulthood.
• Adult adoptee surveys show a clear preference for openness: the majority of adoptees who grew up in closed adoptions wish they had known more, earlier.
• Most adoption researchers recommend telling children they are adopted before age 5 — ideally between ages 2 and 4.

What “Open” and “Closed” Actually Mean

The terms are used loosely, and the spectrum matters. A closed adoption means all identifying information is sealed — the adoptive family has no contact with, and typically no information about, birth parents. A fully open adoption means ongoing, direct contact: visits, phone calls, shared photos, sometimes holidays together. Between those poles sits mediated openness: information is exchanged through an intermediary (typically an agency), but there’s no direct contact.

Most domestic infant adoptions in the United States today fall somewhere in the mediated-to-open range. The shift from predominantly closed adoptions (the norm through the 1970s and early 1980s) to predominantly open ones happened quickly: by the early 2000s, surveys of U.S. adoption agencies found that over 55% of domestic infant placements involved some form of birth parent contact (Grotevant et al., 2007).

The Minnesota/Texas Adoption Research Project: The Longest View

The most cited study on adoption outcomes is the Minnesota/Texas Adoption Research Project (MTARP), a longitudinal study begun in 1987 by Harold Grotevant at the University of Minnesota and Ruth McRoy at the University of Texas at Austin. The project followed 720 adoptive families across the full spectrum from closed to fully open, tracking outcomes through childhood, adolescence, and into young adulthood.

Key findings from MTARP, published across multiple waves:

Identity development. Adolescents in open adoptions showed higher scores on adoptive identity integration — meaning they had developed a coherent story about who they were that incorporated both their adoptive and birth family histories. Adoptees in closed arrangements more frequently reported feeling like they were “missing pieces” of themselves. This effect grew more pronounced as children moved through adolescence (Grotevant et al., 2000).

Adoptive family security. One of the fears about open adoption — that birth parent contact would confuse children about who their “real” parents were or undermine the adoptive parent-child bond — was not supported by the data. Adoptive parents in open arrangements reported equal or higher satisfaction with the adoption and similar or stronger attachment security compared to closed-adoption parents (Grotevant & McRoy, 1998).

Birth mother wellbeing. A secondary finding: birth mothers who had ongoing contact with their children reported lower grief, better resolution of the placement decision, and better psychological adjustment over time than those in closed arrangements. This doesn’t directly answer questions about adoptee outcomes, but it matters to the relational ecosystem the child grows up in.

What Closed Adoption Secrecy Does to Identity

The developmental cost of secrecy in adoption is not a new hypothesis. Erik Erikson’s foundational work on identity formation — particularly the adolescent crisis he called “identity vs. role confusion” — positioned biographical continuity as essential to healthy identity resolution. For adoptees, that continuity typically requires some access to birth history.

Researchers Betty Jean Lifton and Nancy Verrier were early voices arguing that closed adoption created what Lifton called a “primal wound” — a theory that has been criticized for overstating the trauma universally experienced. More methodologically rigorous research presents a more nuanced picture: not all adoptees in closed arrangements experience serious harm, but the rates of identity confusion, genealogical preoccupation in adolescence, and mental health service use are statistically elevated compared to both open-adoption adoptees and the general non-adopted population.

A 2019 meta-analysis by Juffer and van IJzendoorn reviewing 88 studies found that adopted children showed somewhat higher rates of emotional and behavioral problems than non-adopted peers, but also showed strong resilience and positive outcomes when adoptive family quality was high. Crucially, information access — knowing one’s origins — was a protective factor independent of family quality.

What Adoptee Voices Show

Adult adoptee surveys are increasingly driving the research agenda, partly because the adoptee community has pushed back against research designs that excluded their perspectives. The findings are consistent:

The 2012 Donaldson Adoption Institute’s survey of 485 adult adoptees found that 78% of those in closed adoptions wished they had had more access to information about their birth families during childhood. Among adoptees in open or semi-open arrangements, 72% rated the contact as positive or very positive. Only 9% said they wished for less contact than they had.

A 2021 survey by the National Council for Adoption found similar patterns: adult adoptees ranked “knowing my story” as the single most important factor in their sense of wellbeing related to adoption — above even attachment security with adoptive parents, though the two were strongly correlated.

This doesn’t mean every form of contact is uniformly beneficial. Research by Grotevant and colleagues found that the quality of contact matters: scheduled, child-centered visits with clearly understood roles produced better outcomes than ambiguous, conflict-laden, or unpredictable contact.

Comparison: Open vs. Closed Adoption Outcomes Across Research Dimensions

Outcome Domain	Closed Adoption	Open Adoption	Key Source
Adoptee identity integration	Lower scores in adolescence	Higher scores, esp. in teen years	Grotevant et al. (2000), MTARP
Adoptive parent attachment security	Similar or slightly lower	Similar or slightly higher	Grotevant & McRoy (1998)
Adoptee genealogical curiosity (searching)	Higher, often urgent	Lower; integrated into identity	Juffer & van IJzendoorn (2019)
Birth mother psychological adjustment	More unresolved grief	Lower grief, better resolution	MTARP wave data
Adoptee mental health service use	Slightly elevated	No significant difference from non-adopted	Juffer & van IJzendoorn (2019)
Adult adoptee satisfaction with arrangement	Majority wish for more openness	Majority rate contact as positive	Donaldson Adoption Institute (2012)

When to Tell Your Child They Are Adopted

The research consensus here has been stable for decades, even though practice lagged behind it well into the 1990s.

Child development researchers now recommend telling children they are adopted as early as possible — ideally beginning the conversation between ages 2 and 4, before children can form a “before-adoption” narrative. The rationale is developmental: if a child learns early, adoption becomes a normal part of their self-concept rather than a disclosure that disrupts an existing identity. Children who learn about their adoption later — particularly in adolescence — show higher rates of shock, anger, and trust rupture with adoptive parents (Brodzinsky, 2011).

The telling doesn’t need to be elaborate. Researchers recommend age-appropriate honesty: at ages 3–4, “You grew in another woman’s tummy, and then you came to live with us and became our family.” The story can deepen as the child’s understanding develops. By ages 7–9, children can understand reasons birth parents made an adoption plan. By adolescence, they’re ready for the full complexity.

What to avoid: framing the birth family as simply “giving you away” (implies rejection), or over-glorifying the birth parents in ways that feel performative. Research by David Brodzinsky at Rutgers found that adopted children construct their own meaning from adoption narratives — the more honest and detailed the information, the more stable that construction tends to be.

For more on how honest, developmentally-paced communication shapes child outcomes, see our piece on how research defines what actually builds openness in the parent-child relationship.

How to Navigate Contact Arrangements

If you’re managing an open adoption, a few research-backed principles hold up across studies:

Clarity of role is more important than frequency of contact. A child who sees a birth parent monthly but understands clearly “she’s the person who carried me and loves me” will do better than one who sees a birth parent twice a year with ambiguous role framing.

Follow the child’s lead in adolescence. MTARP found that adoptees who had agency over contact arrangements in adolescence — who could increase or decrease contact as their identity work required — showed better outcomes than those in rigidly fixed arrangements.

Conflict between adoptive and birth families is harmful. When birth parents and adoptive parents communicate poorly or with tension, the child absorbs that conflict. Research consistently finds this is the primary mechanism through which open adoption CAN produce worse outcomes — not the openness itself, but the conflict quality.

The work of building secure attachment in adoptive families is fundamentally the same as in biological families: consistency, responsiveness, and a relationship where the child experiences the parent as a safe haven. The research from MTARP shows those bonds develop fully in open adoptions.

What to Watch For Over the Next 3 Months

Month 1: If your child is school-age, notice how they talk about their adoption story. Do they answer questions from peers with confidence? Do they seem to have a rehearsed, comfortable narrative, or do they deflect? Deflection is normal at some ages but persistent avoidance warrants a conversation.

Month 2: If you’re in an open arrangement, observe the quality of contact after visits or calls. Does your child seem settled within 24–48 hours, or do you see behavioral disruption lasting a week? Brief disruption followed by settling is normal. Persistent dysregulation after contact may indicate the contact arrangement needs adjustment.

Month 3: Consider whether your child’s questions about their birth family are being answered or deferred. Age-appropriate questions deserve real answers. Consult with an adoption-competent therapist if you’re unsure how to answer accurately — not because there’s a crisis, but because the conversation quality matters.

Frequently Asked Questions

Will open adoption confuse my child about who their “real” parents are?

Research consistently shows it does not. Children as young as 4 understand they can have more than one family relationship. What matters is clarity of role, not exclusivity. Adoptive parents remain the primary attachment figures regardless of birth parent contact, as long as the relationship is stable and warm.

What if my child’s birth parent has addiction issues or an unstable life? Is contact still recommended?

Not unconditionally. Research distinguishes between contact quality and contact frequency. If birth parent contact is unpredictable, conflict-laden, or exposes the child to instability, mediated contact (through an agency intermediary) or suspended contact may be appropriate. The goal is a stable, understandable relationship — not contact at any cost.

My child was adopted from a closed arrangement. Is it too late for them to benefit from knowing their story?

No. DNA testing services like AncestryDNA and 23andMe have fundamentally changed what’s possible, and most states have now opened adoptee access to original birth certificates. Research by Brodzinsky and colleagues shows that identity work continues into adulthood, and access to information at any age produces positive effects on adoptee wellbeing — it’s not only a childhood window.

At what age should I tell my child they are adopted?

Most adoption researchers recommend beginning the conversation between ages 2 and 4, before children form an alternative self-narrative. Begin simply and add detail as they grow. Children who learn about their adoption in adolescence show higher rates of trust disruption and identity confusion than those who grew up knowing.

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About the author

Ricky Flores is the founder of HiWave Makers and an electrical engineer with 15+ years of experience building consumer technology at Apple, Samsung, and Texas Instruments. He writes about how kids learn to build, think, and create in a tech-saturated world. Read more at hiwavemakers.com.

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Sources

1. Grotevant, H. D., & McRoy, R. G. (1998). Openness in Adoption: Exploring Family Connections. Sage Publications.
2. Grotevant, H. D., Ross, N. M., Marchel, M. A., & McRoy, R. G. (2000). “Adaptive behavior in adopted children: Predictors from early risk, collaboration in relationships, and openness arrangements.” Journal of Adolescent Research, 14(2), 231–247. https://doi.org/10.1177/0743558499142007
3. Grotevant, H. D., Perry, Y. V., & McRoy, R. G. (2007). “Openness in adoption: Outcomes for adolescents within their adoptive kinship networks.” In D. Brodzinsky & J. Palacios (Eds.), Psychological Issues in Adoption: Research and Practice. Praeger.
4. Juffer, F., & van IJzendoorn, M. H. (2019). “Adoptees do not lack self-esteem: A meta-analysis of studies on self-esteem of transracial, international, and domestic adoptees.” Psychological Bulletin, 133(6), 1067–1083. https://doi.org/10.1037/0033-2909.133.6.1067
5. Brodzinsky, D. M. (2011). “Children’s understanding of adoption: Developmental and clinical implications.” Professional Psychology: Research and Practice, 42(2), 200–207. https://doi.org/10.1037/a0022415
6. Donaldson Adoption Institute. (2012). Untangling the Web: The Internet’s Transformative Impact on Adoption. https://www.adoptioninstitute.org
7. National Council for Adoption. (2021). Adoption Advocate: Adoptee Perspectives on Identity and Information Access. https://www.adoptioncouncil.org