Marianismo
Evelyn Stevens' essay was very significant to this area of study. However, since its publication, her argument has been debated by other researchers and critics. Although her argument addresses marianismo in Latin America at large, many of the sources she uses mainly focus on Mexican culture, thus severely limiting her frame of reference. Also, she is criticized for implying that, despite other differences among various socioeconomic classes, the ideal woman's characteristics are ultimately the same across social classes. Her critics claim Stevens ignores socioeconomic factors, saying "her description of women as altruistic, selfless, passive, [and] morally pure" is inadequate. There have been some responses in the literature to the concept of marianismo that assert that its model of/for women's behavior is very class-based. In other words, the idea that men do all the hard work, while women remain idle, on a pedestal, is a life that rarely exists, particularly for the peasant, poor and working class women that make up the majority of Latin America women. As Gil and Vazquez remind us, "most of her [Stevens's] data came from middle class Mexican women".
Darwinism
English biologist Thomas Henry Huxley coined the term "Darwinism" in April 1860. It was used to describe evolutionary concepts in general, including earlier concepts published by English philosopher Herbert Spencer. Many of the proponents of Darwinism at that time, including Huxley, had reservations about the significance of natural selection, and Darwin himself gave credence to what was later called Lamarckism. The strict neo-Darwinism of German evolutionary biologist August Weismann gained few supporters in the late 19th century. During the approximate period of the 1880s to about 1920, sometimes called "the eclipse of Darwinism", scientists proposed various alternative evolutionary mechanisms which eventually proved untenable. The development of the modern synthesis in the early 20th century, incorporating natural selection with population genetics and Mendelian genetics, revived Darwinism in an updated form.