When the other adult badmouths you to the children
Everything written about badmouthing is written about the person doing it. The question you actually have is what to do when it is being done to you — whether to correct it, whether to defend yourself, and what to say to a child who repeats something untrue about you with complete conviction. That question has far less research behind it than you would expect, and this page says so.
It is completely understandable and it is the thing most likely to make it worse. A child who hears two adults contradicting each other about what kind of person the other one is has been handed the job of deciding, which is the loyalty bind itself rather than a defense against it. That does not mean saying nothing. It means the response has a particular shape, set out below.
The short version4 points · tap one to jump to it
- Badmouthing the other parent (and stepparent) — A qualitative interview study of 20 adults (international sample) exposed to parental alienating behaviors as children.
- What to say when a child repeats something untrue about you
- When it is the stepparent being badmouthed — What can be said from the stepfamily research more broadly: a child being told to dislike a stepparent is being put in the same bind as a child being told to dislike a parent, and the stepparent defending themselves has even less standing to do it than a parent would.
- What we could not confirm
In this subject 5
Badmouthing the other parent (and stepparent)
There is a real and active peer-reviewed literature on parental alienating behaviors and their harms to children, including a 2022 qualitative study of adults who experienced this in childhood finding it linked to anxiety disorders, trauma reactions, and elevated suicidal ideation. However, this literature is heavily concentrated on identifying and preventing alienating behavior in the denigrating parent; the specific, practical question this page most wants answered — exactly what the targeted parent should do in the moment (defend yourself? stay silent? correct the child’s account?) — is not well covered by controlled research. What is available is largely professional/clinical practice guidance (parenting coordinators, family-law-affiliated writers) rather than tested intervention studies, and should be presented as clinical consensus, not established fact. Badmouthing of a stepparent specifically has essentially no dedicated research base at all — the only related evidence found is AACAP’s stepfamily guidance naming a child “venting/directing anger” at a stepparent as a warning sign, without addressing the badmouthing-of-a-stepparent dynamic directly.
Adults who experienced parental alienating behaviors in childhood report a profound, lasting mental-health impact, including anxiety disorders, trauma reactions, and elevated suicidal ideation, and describe intergenerational transmission of the pattern.
A qualitative interview study of 20 adults (international sample) exposed to parental alienating behaviors as children. The authors frame these behaviors as a form of emotional child abuse. Note the small, self-selected sample (N=20) is a real limitation — this is strong on lived-experience depth, not on population-level prevalence or causal proof.
This study demonstrated the insidious nature of parental alienation and parental alienating behaviors and provided further evidence of these behaviors as a form of emotional abuse.
Extension-service guidance frames badmouthing as harmful in part because a child is ‘a combination of both parents,’ so criticizing one parent is experienced by the child as an indirect criticism of themselves.
Reported consistently, not settled
This is a widely repeated clinical-practice framing rather than a directly tested empirical finding, but it is consistent with the broader loyalty-conflict literature on children caught between parents.
Remember that a child is a combination of both parents, and for one parent to insult the other parent is indirectly insulting the child.
Kansas State University Extension, MF2539
A comprehensive 2022 review by Harman, Warshak, Lorandos & Florian examined 213 studies across 10 languages through December 2020 on parental alienation, covering prevalence, the strategies used, and identification of children who reject a previously good parent.
Reported consistently, not settled
Published in Developmental Psychology (APA journal). This description is drawn from the authors’ own summary of the article (via Dr. Warshak’s professional publication list); the full text of the review itself was not directly retrieved for this research, so specific numeric findings from it should not be treated as independently verified here.
Whether and how a targeted parent should correct a child’s distorted account, or defend themselves directly to the child, is not settled by controlled research; available guidance on this specific question comes from family-law practitioners, parenting-coordination professionals, and co-parenting platforms rather than peer-reviewed intervention studies.
Search of the available literature did not surface a controlled study testing outcomes of ‘defend yourself to the child’ vs. ‘stay neutral’ vs. ‘correct the specific claim calmly, without counter-attacking the other parent.’ The consistent thread across the practitioner sources found is: don’t retaliate with badmouthing of your own, validate the child’s feelings rather than arguing the facts with the child, and address the substance of a false claim through the co-parent or through professional channels (mediator, parenting coordinator, therapist) rather than by contesting it emotionally with the child. This should be presented to readers explicitly as clinical/practitioner consensus, not as research-established best practice.
There is essentially no dedicated research literature on badmouthing of a stepparent specifically (as distinct from badmouthing of a biological/legal parent).
The closest sourced material is AACAP’s stepfamily guidance, which lists a child who ‘vents/directs anger upon a particular family member or openly resents a stepparent’ as one of several signs warranting a psychiatric evaluation — but this addresses the child’s behavior toward a stepparent, not the separate dynamic of an adult badmouthing a stepparent to the child. This gap should be stated plainly rather than papered over.
AACAP, “Stepfamily Problems” (no direct treatment of stepparent-badmouthing found elsewhere)
No controlled study was found supporting real-time correction as the effective response, and clinical/practitioner sources broadly converge on the opposite instinct: validate the child’s feelings without arguing facts with the child, avoid mirroring the badmouthing, and route factual disputes through adult or professional channels. This is presented here as consensus practice guidance, not a proven intervention.
Practitioner consensus (OurFamilyWizard, TalkingParents); no peer-reviewed test located
What to actually do
- Do not retaliate by badmouthing back — professional guidance is unanimous on this even where it lacks a controlled evidence base.
- Validate the child’s feelings about what they heard (‘that sounds confusing/upsetting’) without litigating the facts with the child in the moment.
- Address a specific false claim through the co-parent directly, through a parenting coordinator, or through therapy — not through a counter-argument delivered to the child.
- Keep the child explicitly out of the role of messenger, judge, or fact-checker between households.
- Treat a child’s persistent resentment of a stepparent, or a caregiver openly favoring one child, as AACAP-named signs to seek a professional evaluation rather than something to argue through at home.
- Be honest with readers that the ‘what should the targeted parent do’ question is thin on research and is being answered here from clinical/practitioner consensus, not studies.
What to say when a child repeats something untrue about you
Not a script, because scripts sound like scripts. A shape.
- Take the feeling seriously before the fact. “That sounds like it was horrible to hear” comes before anything about whether it is true.
- Correct only what concerns them. If they have been told you are not paying for something, they need to know they are looked after. They do not need the accounting.
- Do not ask who said it. They know you know. Asking turns them into the source, and next time they will not tell you.
- Refuse the invitation to compare. “I am not going to talk to you about your father” said warmly, not coldly, is a complete answer and children can accept it.
- Say the thing they are actually asking. Which is almost never “is that true”. It is “are you still going to be here”.
- Write it down afterwards — what was said, when, and what you did. Not to use as a weapon, but because a pattern is the only thing a court can act on and a pattern is invisible without dates. Where that line sits is genuinely contested.
When it is the stepparent being badmouthed
Almost nothing is written about this at all, which we would rather say than dress up thin material as guidance. What can be said from the stepfamily research more broadly: a child being told to dislike a stepparent is being put in the same bind as a child being told to dislike a parent, and the stepparent defending themselves has even less standing to do it than a parent would. The person who has to respond is the biological parent in that household, not the stepparent. The research on rejection is here.
Badmouthing is common, and most children exposed to it do not reject the parent it is aimed at. Alienation is the much rarer case where a child does, and the distinction matters because the interventions are completely different and because the accusation is itself sometimes a weapon. That page shows both sides rather than resolving them. Parental alienation.
What we could not confirm
Published because leaving it out would be the dishonest choice. Every item below is something we went looking for and could not stand behind.
- The commonly cited ‘6-12 months before introducing a new partner’ guidance is practitioner/mediator experience, not a research-tested recommendation; no controlled study on optimal timing was located.
- Specific guidance on whether and how a targeted parent should correct a child’s distorted, badmouthed account of them (defend yourself vs. stay neutral vs. redirect) is drawn from family-law/parenting-coordination practitioner sources, not from controlled research; treat as clinical consensus, not established fact.
- Badmouthing of a stepparent specifically (as distinct from badmouthing of a biological/legal parent) has essentially no dedicated research base; only tangential AACAP guidance about a child’s resentment of a stepparent was found.
- The Mazur (1993) finding about children’s age-graded ability to evaluate a parent’s partner/stepparent by observable actions vs. psychological attributes was retrieved only as a secondary citation inside a 2021 paper, not from the original 1993 source.
- The Harman, Warshak, Lorandos & Florian (2022) review of 213 studies on parental alienation, and Warshak’s 2015 ‘Ten Parental Alienation Fallacies’ article, are cited here from the author’s own professional publication list (titles, journals, and summaries), not from directly reading the full published articles — the existence and venue of these peer-reviewed articles is confirmed, but specific internal findings beyond the authors’ own summaries were not independently verified.
- The Kansas State University Extension manual (MF2539) used for much of the age-by-age and ‘keep the child out of the middle’ guidance is explicitly labeled by its publisher as an outdated, historical-use document whose specific recommendations ‘may be obsolete’ — its broad developmental framing is consistent with newer AACAP/AAP material, but the source itself carries that caveat and we are not going to hide it.