I'm primarily talking about medical science (including clinical psychology) here, not "psychology" in general. You can certainly make the argument that medical science isn't as "hard" as physics, but clearly medicine generally works.
You can also make the argument that gender-affirming care doesn't have RCTs behind it, but there's no way to have an RCT that (a) isn't immediately unblinded because the physical effects of HRT are obvious within days, and/or (b) isn't a gross human rights violation. So we rely on supposedly (but not actually) "low-quality" observational studies instead.
You can also make the argument that gender-affirming care doesn't have RCTs behind it, but there's no way to have an RCT that (a) isn't immediately unblinded because the physical effects of HRT are obvious within days, and/or (b) isn't a gross human rights violation. So we rely on supposedly (but not actually) "low-quality" observational studies instead.
For example: https://medicine.yale.edu/lgbtqi/research/gender-affirming-c...