The blackhole of tithing is Brigham Young University. The researcher is Sarah Coyne, an associate professor of human development at BYU. From the BYU news release entitled "New research finds that children who engaged with princess culture were more likely to hold progressive views about women and subscribe less to attitudes of toxic masculinity":
In the longest study to date on the impact of princess media on consumers, new research from BYU professor Sarah Coyne found that children who engaged with princess culture were more likely to later hold progressive views about women and subscribe less to attitudes of toxic masculinity.
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Participants who had a high engagement with princess culture were also less likely to adopt attitudes of toxic masculinity – strict adherence to gender roles that support cultural norms favoring dominance by men – and were more supportive of allowing individuals to feel and show emotion.
“Boys who are exposed to princess culture earlier in life tend to do a better job expressing emotion in their relationships,” said Coyne. “Rather than shutting down their feelings or feeling like they should fight someone who challenges them, they can express their emotions in non-violent ways.”
And you know what else makes boys and men to reject "toxic masculinity" and adopt more progressive views toward women? Pornography. A 2015 article at Mic, "There's a Surprising Link Between Watching Porn and Being a Feminist" related:
According to a recent article in the Journal of Sex Research, viewing pornography doesn't seem to make people more likely to endorse gender non-egalitarianism (i.e., the patriarchy). In fact, contrary to popular belief, people who watch porn are more likely to express support for women in the workforce, nontraditional gender roles and reproductive rights. In short, all those dudes clicking away on Pornhub might actually be bona fide liberal feminists.
And from "Pornography might cultivate progressive attitudes among the religious: study" at PsyPost:
Previous research has found that people who watch pornography are more likely to see women as equals than people who do not watch it.
For the new study, the researchers examined data about pornography use, religious attendance, and attitudes towards women from 11,658 men and 13,988 women who participated in the General Social Survey, an annual study of attitudes in the U.S. population.
The study, which was published in the Journal of Sex Research, was conducted by Kyler R. Rasmussen of Mount Royal University and Taylor Kohut of the University of Western Ontario.
The researchers found that greater religious attendance, overall, was linked to more negative attitudes toward abortion, women in positions of power, and women working outside the home.
But they found evidence that pornography use moderated this relationship. People with greater religious attendance who watched more pornography tended to have more positive attitudes toward abortion, women in positions of power, and women working outside the home than than [sic] religious people who did not report watching it.
 Coyne's prior "princess culture" research is summarized here. It involved 198 preschoolers. Although there is no breakdown in the article as to the sex of the participants, it clearly included both boys and girls.