Testosterone therapy masculinizes speech and gender presentation in transgender men
Open Access
- 10 February 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 11 (1), 1-10
- https://doi.org/10.1038/s41598-021-82134-2
Abstract
Voice is one of the most noticeably dimorphic traits in humans and plays a central role in gender presentation. Transgender males seeking to align internal identity and external gender expression frequently undergo testosterone (T) therapy to masculinize their voices and other traits. We aimed to determine the importance of changes in vocal masculinity for transgender men and to determine the effectiveness of T therapy at masculinizing three speech parameters: fundamental frequency (i.e., pitch) mean and variation (fo and fo-SD) and estimated vocal tract length (VTL) derived from formant frequencies. Thirty transgender men aged 20 to 40 rated their satisfaction with traits prior to and after T therapy and contributed speech samples and salivary T. Similar-aged cisgender men and women contributed speech samples for comparison. We show that transmen viewed voice change as critical to transition success compared to other masculine traits. However, T therapy may not be sufficient to fully masculinize speech: while fo and fo-SD were largely indistinguishable from cismen, VTL was intermediate between cismen and ciswomen. fo was correlated with salivary T, and VTL associated with T therapy duration. This argues for additional approaches, such as behavior therapy and/or longer duration of hormone therapy, to improve speech transition.Funding Information
- College of Arts and Sciences, Boston University
- National Institutes of Health (DC013017, DC013017)
- Natural Sciences and Engineering Research Council of Canada (DDG-2017-00013)
This publication has 71 references indexed in Scilit:
- Effects of Testosterone Treatment and Chest Reconstruction Surgery on Mental Health and Sexuality in Female-To-Male Transgender PeopleJournal of Psychology & Human Sexuality, 2014
- Speaking Fundamental Frequency and Vowel Formant Frequencies: Effects on Perception of GenderJournal of Voice, 2013
- Anxiety and depression in transgender individuals: The roles of transition status, loss, social support, and coping.Journal of Consulting and Clinical Psychology, 2013
- Voice change as a new measure of male pubertal timing: A study among Bolivian adolescentsAnnals of Human Biology, 2013
- Transgender voice and communication treatment: a retrospective chart review of 25 casesInternational Journal of Language & Communication Disorders, 2012
- Standards of Care for the Health of Transsexual, Transgender, and Gender-Nonconforming People, Version 7International Journal of Transgenderism, 2012
- Masculine voices signal men's threat potential in forager and industrial societiesProceedings. Biological sciences, 2011
- Attempted Suicide Among Transgender PersonsJournal of Homosexuality, 2006
- Elements of Acoustic PhoneticsLanguage, 1998
- Procedures for Detecting Outlying Observations in SamplesTechnometrics, 1969