Definition of "hypergender"

Given the research results indicating that hypermasculine men and hyperfeminine women appear to share similar attitudes and the overlap in content of several of the HMI and HFS items, it is plausible that acceptance of hypergender ideologies (i.e., hypertraditionality, Byrne & Schulte, 1990; Smith, 1989; Smith et al., 1995) represents a unifying constellation of attitudes that encompasses both. That is, hypermasculinity and hyperfemininity may represent gender-typed manifestations of a broader constellation of attitudes, which we call hypergender ideologies.

1996 June, Merle E. Hamburger, Matthew Hogben, Stephanie McGowan, Lori J. Dawson, “Assessing Hypergender Ideologies: Development and Initial Validation of a Gender-Neutral Measure of Adherence to Extreme Gender-Role Beliefs”, in Journal of Research in Personality, volume 30, number 2, page 161

Other attitudes and beliefs included belief in rigid or extreme gender difference (hypergender ideology), greater acceptance of using verbal pressure and greater misperception about a woman's friendly behaviour. […] Hypergender ideology, beliefs that heterosexual relations were adversarial and rape myth acceptance formed a ‘block’ of interrelated attitudes among participants, […] (Loh et al., 2005, p.1334).

2014, Antonia Quadara, “The Everydayness of Rape: How Understanding Sexual Assault Perpetration Can Inform Prevention Efforts”, in Nicola Henry, Anastasia Powell, editors, Preventing Sexual Violence: Interdisciplinary Approaches to Overcoming a Rape Culture, Basingstoke: Palgrave Macmillan, pages 51–52