The psychology of speciesism

From this article:

"Our research showed that the philosophers were right when they drew an analogy between speciesism and other forms of prejudice. Speciesism correlates positively with racism, sexism, and homophobia, and seems to be underpinned by the same socio-ideological beliefs. Similar to racism and sexism, speciesism appears to be an expression of Social Dominance Orientation: the ideological belief that inequality can be justified and that weaker groups should be dominated by stronger groups (Dhont, et al., 2016). In addition, speciesism correlates negatively with both empathy and actively open-minded thinking. Men are more likely to be speciesists than women. Yet, there are no correlations with age or education."