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James Cantor

@JamesCantorPhD

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Neuroscientist and sex researcher, with news and commentary from the fascinating science of sex.

Toronto, Ontario, Canada
Joined October 2011
Don't wanna be here? Send us removal request.
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@JamesCantorPhD
James Cantor
7 months
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@JamesCantorPhD
James Cantor
10 months
I rarely tweet personal things, but it's been 32 years today. When we met, we didn't get to hear that from many gay couples.
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@JamesCantorPhD
James Cantor
2 years
Being on puberty blockers for 3 years means 3 years not developing in brain or body---falling farther and farther behind friends and classmates. How is that reversible?
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@JamesCantorPhD
James Cantor
2 years
For girls, feeling anxious about becoming a woman is not evidence of being a boy.
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@JamesCantorPhD
James Cantor
4 years
Open letter of resignation: My 27-year association with Society for the Scientific Study of Sexuality must come to an end. In the present culture war between science and popular appeal, the SSSS Board of Directors selected the latter.
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@JamesCantorPhD
James Cantor
2 years
When a girl says she doesn't feel like a girl, it often means, "I don't feel like the exaggerated images of femininity circulating online.
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@JamesCantorPhD
James Cantor
2 years
"Psychotherapy instead of meds" for kids with gender dysphoria is not "denying health care."
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@JamesCantorPhD
James Cantor
2 years
Medically transitioning adolescent girls for being insecure about their femininity is like recommending cardiac transplants for broken hearts. Decisions are being based on metaphor, not science.
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@JamesCantorPhD
James Cantor
2 years
How is it a "preferred" pronoun if its use is mandatory?
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@JamesCantorPhD
James Cantor
2 years
Never in my life would I have guessed I'd be disagreeing so strongly with @jonstewart . Yet, Stewart's interview with Leslie Rutledge on the science of trans- issues missed and misrepresented a great deal of the research. These were the major gaps...
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@JamesCantorPhD
James Cantor
3 years
And yet, here you are...
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@JamesCantorPhD
James Cantor
2 years
The number of sexes equals the number of biological parents.
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@JamesCantorPhD
James Cantor
8 years
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@JamesCantorPhD
James Cantor
2 years
“What are your pronouns?” doesn’t mean they want to know your pronouns. It means they’re dying to tell you theirs.
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@JamesCantorPhD
James Cantor
2 years
So, if your sex only got assigned at birth, what were you during the prior nine months? Schrodinger's gender?
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@JamesCantorPhD
James Cantor
4 years
Yelling "Transphobia!" has become like yelling "Witchcraft!!"
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@JamesCantorPhD
James Cantor
2 years
You’re not a critical thinker until both sides hate you.
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@JamesCantorPhD
James Cantor
3 years
Does this count as conversion therapy?: A guy says he's not sexually attracted to transpeople, and a transperson suggests that he must overcome his issues so that he is?
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@JamesCantorPhD
James Cantor
3 years
I cannot help but compare: When I was young, gays were dying by the thousands. Today, the news is "trouble accessing haircuts."
@CBCToronto
CBC Toronto
3 years
Hair is key to affirming transgender and gender nonconforming people’s identity, but they often have trouble accessing haircuts that help them look the way they feel. A photographer has documented some of these experiences.
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@JamesCantorPhD
James Cantor
5 years
Being offended has become so fashionable, I can only show my rebelliousness now by being at peace.
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@JamesCantorPhD
James Cantor
3 years
How can one consent to orgasm-blocking treatments if one doesn't know what orgasms are? Specifically, how can a prepubescent child weigh the risks of sacrificing what they cannot know?
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@JamesCantorPhD
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1 year
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@JamesCantorPhD
James Cantor
3 years
Woke is the weaponization of empathy.
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@JamesCantorPhD
James Cantor
3 months
Despite claims that blocking puberty gives time for decision-making, no one can answer the obvious: How is it possible for a child to discover "This isn't as bad as I feared" when they are blocked from experiencing it? Fears are resolved by confronting them, not avoiding them.
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@JamesCantorPhD
James Cantor
2 years
For very many teen girls, "trans" doesn't mean "I feel like a man." It means "I don't feel like a perfect woman and want out of the race." That's why "non-binary" etm. are so popular. Hard to shake the observation that the explosion in cases parallels the advent of social media.
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@JamesCantorPhD
James Cantor
2 years
Once a healthcare provider (mis)represents the science as saying their child would be at substantial risk of death by suicide if not permitted to transition, it is hard to think of parents' subsequent decisions as "informed consent."
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@JamesCantorPhD
James Cantor
2 years
No. Sex evolved approximately 2 billion years ago. The idea that natural phenomena come to exist only when humans label them is human chauvinism. Sex was here before us, and (if we leave anything living behind) will be here after.
@stephenwhittle
Prof. Stephen Whittle OBE, PhD, DLaws, FAcSS,
2 years
Binary sex is a (man) invented modern (late 18th century) taxanomic convention. The dividing line is if it’s time. We know that people have many ‘Sex’ variations & not just those called intersex. Enough variation that we cannot say that each human will be on side 1 or 2. So…
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@JamesCantorPhD
James Cantor
7 months
"‘Gender-Affirming Care Is Dangerous. I Know Because I Helped Pioneer It.’ "My country, and others, found there is no solid evidence supporting the medical transitioning of young people. "Why aren’t American clinicians paying attention?"
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@JamesCantorPhD
James Cantor
2 years
Whenever someone says "Words are violence," all I hear is, "I am so emotionally dysregulated that I cannot scale my reactions appropriately to different situations." #ClusterB
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@JamesCantorPhD
James Cantor
3 months
Gender affirmative therapy is for affirming the therapist, not the client. It takes no talent, training, or skill to tell people what they want to hear. Helping youth process what they need but DON'T want to hear does. If need-for-affirmation is all you see, the need is yours.
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@JamesCantorPhD
James Cantor
3 years
Lived experience is what the scientific method was designed to exclude. We seek universal truths, not vindication of our preconceptions.
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@JamesCantorPhD
James Cantor
1 year
It is perfectly legitimate to debate the fairness of MtF transfolk competing on female sports teams. Shaming #autogynephilia , however, is unfair. AGP appears to be simply another atypical sexuality that people do not ask for and cannot change.
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@JamesCantorPhD
James Cantor
2 years
If you were only assigned your sex at birth, what where you during the 20-week sonogram?
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@JamesCantorPhD
James Cantor
2 years
Rainbows are no longer pride symbols. They are virtue signals. It no longer takes guts to show a pride flag. It takes guts to question anything done it its name.
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@JamesCantorPhD
James Cantor
3 years
It's not a consensus if dissenters were cancelled.
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@JamesCantorPhD
James Cantor
2 years
Is evolution transphobic?
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@JamesCantorPhD
James Cantor
3 years
When does “lived experience” produce insight, and when does it produce bias?
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@JamesCantorPhD
James Cantor
3 years
You can’t have intellectual diversity by blocking everyone who disagrees with you.
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@JamesCantorPhD
James Cantor
2 years
Best interview question ever: "What's something you believed, but changed your mind about, once evidence emerged?"
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@JamesCantorPhD
James Cantor
24 days
How can one distinguish "I'm a boy" from "I'm afraid of being a girl?" How can one distinguish "I don't want to grow up to be a man" from "I don't want to grow up"? How can one distinguish "I don't want to have children" from "Yet"?
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@JamesCantorPhD
James Cantor
3 years
I'm old enough to remember when objective evidence was more important than one's subjective experiences.
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@JamesCantorPhD
James Cantor
3 months
@LeorSapir @wpath @thecassreview I'm having trouble reconciling these: "I approached this analysis as a non-binary researcher, as a parent of a trans child, and with experience as a parent-service user"
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@JamesCantorPhD
James Cantor
3 years
Studies of gender dysphoric kids all show that most turn out gay/lesbian, not trans. People claim puberty-blockers give kids "time to choose," but not discussed is the obvious: Blocking puberty blocks onset of sex drive, so blocks the chance for them to compare at all.
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@JamesCantorPhD
James Cantor
2 years
We have studies saying mental health doesn't improve from transition. We have studies saying mental health does improve, but can't tell if from psychotherapy or medical transition. We have 0 studies showing meds superior to therapy. And: Psychotherapy does not cause sterility.
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@JamesCantorPhD
James Cantor
2 years
In American gender clinics, it is hard to distinguish "the child knows best" from "the customer is always right."
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@JamesCantorPhD
James Cantor
3 years
Many people say they want to be heard, but mean "obeyed."
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@JamesCantorPhD
James Cantor
4 years
Proposal for DSM-6: Virtue Signalling Personality Disorder
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@JamesCantorPhD
James Cantor
3 years
Perhaps you should recognize the harm you're doing NOW.
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@JamesCantorPhD
James Cantor
3 years
Next big thing among furries: "Species assigned at birth."
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@JamesCantorPhD
James Cantor
3 years
For trans issues, the consensus is...afraid to speak.
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@JamesCantorPhD
James Cantor
6 months
How can prepubescent youth give consent---INFORMED consent---to forgoing all orgasm for all their lives? How can a prepubescent mind appreciate the experience sufficiently for the consent to represent *informed* consent?
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@JamesCantorPhD
James Cantor
6 months
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@JamesCantorPhD
James Cantor
9 months
Calling it "scientifically supported" doesn't make it scientifically supported. Calling it "life-saving" doesn't make it life-saving. Calling it "medically necessary" doesn't make it medically necessary. Calling it "well established" doesn't make it well established.
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@JamesCantorPhD
James Cantor
3 years
It's impossible to ban conversion therapy for sex orientation AND gender identity. Transition IS conversion therapy: Transition is the difference between a gay son and a straight daughter. Banning therapy to become comfortable as gay IS the pressure to live as straight.
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@JamesCantorPhD
James Cantor
2 years
The research has NOT shown transition to improve mental health. The research is much more consistent with the psychotherapy that accompanies medicalized transition being what improves mental health. No medicalized intervention has been shown to add beyond that.
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@JamesCantorPhD
James Cantor
1 year
Premises: 1. Someone feels ugly, fears rejection. 2. Person identifies as Asexual, escaping social pressure to date. 3. Person attends psychotherapy. Their self-esteem improves, and they feel ready to try dating and sex. Question: Was this conversion therapy of asexuality?
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@JamesCantorPhD
James Cantor
3 years
There exists no scientific evidence whatsoever to support the claim of a neurological origin of gender identity. Such evidence exists for sexual orientation and the paraphilias, but not for gender identity.
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@JamesCantorPhD
James Cantor
4 months
"Transgender youth have higher rates of mental health issues..." Yes, there's substantial evidence showing that. "...because of the stigma" No, there's no evidence showing that. Correlation <> causation, Drs. And stigma doesn't cause ADHD or autism spectrum disorder.
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@JamesCantorPhD
James Cantor
2 years
Correlations between adolescent gender dysphoria and suicidality are not well explained by being a result of transphobia. But they are very well explained by their both being a result of social contagion, for which adolescent (bio) females are the most susceptible.
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@JamesCantorPhD
James Cantor
2 years
Every child treated for gender dysphoria in the last decade will have their medical records scrutinised to see if NHS care is causing more harm than good. Changing the law so researchers can study data on ~9,000 adolescents given counselling or drugs.
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@JamesCantorPhD
James Cantor
3 years
When someone believes their lived experience matters, I agree. When someone believes their lived experience is all that matters, I see narcissism.
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@JamesCantorPhD
James Cantor
3 months
The WPATH response to the #WPATHFiles is remarkable in its vacuity. A science- and evidence-based organization would respond with science and evidence.
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@JamesCantorPhD
James Cantor
2 months
The Cass Report included systematic reviews of the relevant studies. From those: Social transition review: Turban et al (2021) is "low quality" Puberty blocker review: Turban et al (2020) is "low quality" Hormone review: Turban et al (2022) is "low quality"
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@JamesCantorPhD
James Cantor
1 year
Outcomes research about medical transition is invalid without the detransitioners. "Survivorship bias or survival bias is the logical error of concentrating on entities that passed a selection process while overlooking those that did not." More:
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@JamesCantorPhD
James Cantor
6 months
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@JamesCantorPhD
James Cantor
3 months
The WPATH president claims credibility on the basis of other medical associations. Yet, those other associations claim credibility on the basis of WPATH. The table below, however, lists *all* studies in their systematic reviews, along side the lists from the European ones.
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@JamesCantorPhD
James Cantor
3 years
To the cult, deprogramming is conversion therapy.
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@JamesCantorPhD
James Cantor
3 years
"Lived experience" = I have no objective evidence.
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@JamesCantorPhD
James Cantor
4 years
New study out on suicide rates in trans folk. The article analyzed *actual* completed suicides rather than self-reported thoughts or attempts: 0.80% in transwomen 0.25% in transmen
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@JamesCantorPhD
James Cantor
3 years
For those following the #ROGD debates: A group of psychology organizations claimed ROGD doesn't exist. In this blog post, I review the science behind their conclusion, summarizing the studies they somehow neglected.
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@JamesCantorPhD
James Cantor
3 years
Most 'trans kids' become desisters, but trans history gets written by the persisters.
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@JamesCantorPhD
James Cantor
4 years
The BBC has dropped Mermaids, The Gender Identity Research and Education Society (GIRES), The Gender Trust, and The LGBT Foundation from its information page for transgender people.
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@JamesCantorPhD
James Cantor
2 years
Scientists read the methods to know if the results are any good. Activists read the results to decide if the scientists are any good.
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@JamesCantorPhD
James Cantor
2 years
Research does NOT show transition reduces suicidality. Research shows people with better mental health are more likely to be permitted to transition. (The misunderstanding is an example of the famous correlation-causation error.)
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@JamesCantorPhD
James Cantor
1 year
You can't know what the "settled science" is without first running a systematic review. No American medical assn conducted such a review of the safety and effectiveness of medicalized transition of minors. The European public health care systems that DID all said the opposite.
@glaad
GLAAD
1 year
Good morning! A reminder that healthcare for transgender people is settled science. Every major medical association supports this critical life-saving care.
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@JamesCantorPhD
James Cantor
10 months
I still have trouble reconciling: "Children know who they are" and No one knew they were non-binary until social media.
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@JamesCantorPhD
James Cantor
2 years
"Fluid identity" can be a euphemism for "unstable identity," and unstable identity is a symptom of #BPD .
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@JamesCantorPhD
James Cantor
2 years
The most dangerous mental health professionals are those who believe providing comfort is the same as providing therapy.
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@JamesCantorPhD
James Cantor
9 months
What doesn't count as Evidence-Based Medicine: - Testimonials from satisfied customers. - Providers' promises to make you a satisfied customer. - Associations of providers saying their dues-paying members are approved to make you a satisfied customer. - Any survey of the above.
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@JamesCantorPhD
James Cantor
3 years
Psychology has long shown that the most effective means of changing prejudiced minds is simply for the groups to interact: Exactly the opposite of cancellation culture. #cancelcancelculture #ccc
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@JamesCantorPhD
James Cantor
2 years
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@JamesCantorPhD
James Cantor
3 years
The most popular but least effective type of therapy is called "Tell me what I want to hear."
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@JamesCantorPhD
James Cantor
2 years
No, blockers block the very brain and sexual development they need to overcome their fears of growing up. They need help confronting those anxieties, not help avoiding them. There is no evidence blockers improve anything beyond psychotherapy. (Agreed re access problem.)
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@JamesCantorPhD
James Cantor
2 months
I have yet to see a logical answer: Sonogram at month 6 of pregnancy shows unborn child is male. What do you call the “sex assigned at birth” when there’s been no birth?
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@JamesCantorPhD
James Cantor
3 years
The explosive popularity of affirmation-on-demand is not because it is so comforting for the client, but because it is so comforting for the clinician.
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@JamesCantorPhD
James Cantor
3 years
I cannot help but compare: GLB rights were fought mostly with feminist, collective, communication-based methods. Trans rights are fought mostly with authoritarian, think-what-I-tell-you, punitive consequence methods.
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@JamesCantorPhD
James Cantor
1 year
How many fit "Born in the wrong body"?
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@JamesCantorPhD
James Cantor
3 years
Telling people only what they want to hear is neither supporting, nor being an ally.
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@JamesCantorPhD
James Cantor
1 year
It's hard not to put this together with Reuters' interview with Dr. Marci Bowers, WPATH’s president saying even minors should not be “blaming the clinician or the people who helped guide them,” she said. “They need to own that final step.”
@JamesCantorPhD
James Cantor
1 year
One of the most widely cited clinical guidelines for treating people with gender dysphoria is from The Endocrine Society. Rarely does one see the disclaimer included at the end:
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@JamesCantorPhD
James Cantor
3 years
If words are violence, how do you have a non-violent protest?
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@JamesCantorPhD
James Cantor
2 years
Social transition of gender is conversion therapy. Psychotherapy of dysphoria is not.
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@JamesCantorPhD
James Cantor
3 years
It's hard to express as much hate as anti-hate groups.
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@JamesCantorPhD
James Cantor
2 years
Useful comparison: "Transwomen are women" and "My adopted children are my children." One's adopted child can be one's child for every personal, social, and even legal circumstance, but it still doesn't mean you can donate a kidney to each other.
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@JamesCantorPhD
James Cantor
3 years
Sure. You get to challenge others, but they can't challenge you back.
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@JamesCantorPhD
James Cantor
3 years
When I was a young gay man, "dead naming" would mean reading the list of actual names of that week's actual dead.
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@JamesCantorPhD
James Cantor
4 years
Interestingly, cis-women are more likely to *attempt* suicide than cis-men, but cis-men are more likely to *complete* suicide than cis-women. The pattern among transfolk matches biological sex rather than their social gender.
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@JamesCantorPhD
James Cantor
6 years
The problem of the extreme right is its unholy alliance with antisocial personality disorder. The problem of the extreme left is its unholy alliance with borderline and histrionic personality disorder. Moderate is the new radical.
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@JamesCantorPhD
James Cantor
6 months
There is nothing more anti-science than to claim "The science is settled."
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