We present biology of sex research in videos, articles, and books.


What we do

We teach others about the biological and psychological differences between males and females and why they are important in illustrated animated videos, articles, and podcasts.

Our content is sourced directly from scientific literature. You can review our citations in the descriptions of videos or at the end of articles.

Why it matters

The denial of the two sexes is one of the fundamental issues of our time. It has never been more important to have an educated public on how sex differences impact individuals and society.

Understanding the sexes is critical for psychological health, social relationships, accurate medical research, correct reporting of crime statistics, fairness and safety in sports, and ultimately, the health of our societies and the continuation of our species.


Meet the Paradox Team

  • Zachary Elliott

    FOUNDER & EDITOR-IN-CHIEF

    Author of three books on sex and gender and the producer of 20+ animated videos on sex differences. His fascination with the biology of sex and desire to learn and educate led him to create the Paradox Institute in January 2020.

  • Cynthia Breheny

    COMMUNICATIONS & DESIGN

    A digital artist, animator, and author. Her lifelong experience with gender dysphoria and her professional design skills provide her with unique abilities to communicate sex and gender concepts.

  • Talia Nava

    EDITOR & CONTRIBUTOR

    Formal education in Cognitive Psychology and Medical Anthropology. Her experience working with patients in a psychiatric hospital gives her direct experience with a number of mental health issues.

  • Sammy Stagg

    EDITOR & CONTRIBUTOR

    Sammy is a PhD student in neuroscience studying circadian neuroinflammation in dementia. His other research interests include sex differences, sexuality, and gender dysphoria.