I don't think that sort of thing is being studied. Affirmation. Etc.
For years on here there have been women saying how they felt about puberty. The unpleasant discomfort of how you go from little kid to fuckable in the blink of an eye.
The way suddenly people start scrutinising your body. Men start looking at you in a sort of. Like you're a thing they would like to eat. Your humanity goes. It's a real shock.
When I was at school in the 80s girls wore really baggy clothes. And starved themselves. As a reaction to all that. Hide the breasts. Try and stop the attention from adult men. Periods might stop. Stay a kid, stave off the scary expectations and everything around being a female seen as sexually mature/ maturing.
Now. Breast binders. Mastectomies. Breasts are fetishised in the UK. It's all very difficult and a long running feminist discussion.
There is an obvious area for study in girls binding, wanting breast removal.
Where is it? No where.
Interestingly. And awfully. Breast ironing is seen as abuse. It's done to try to hide the girls developing body to protect them from the attentions of men. It's painful. Abs accepted as wrong.
Breast binding OTOH is aok. The scouts (I think it was) have a section on how trans boys who bind may not be able to participate in physical activities because it can limit breathing. No questions. No. What the hell? Just. Let them sit out.
No there aren't any studies and some have been actively suppressed (denied funding after complaints lodged).
See also, detransitioners.
And, the way trans people (sometimes with full surgery) who don't deny their sex are treated.
This is not something that is allowed to be looked at. No debate. Etc.