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In a random national sample of 6000 English-speaking adults, aged 18 and over, the greater the degree to which these subjects attributed the causes of homosexuality to genetics, the greater was the support for extending homosexual rights in the areas of legalized domestic partnership and homosexual marriages. The effects of genetic causal attribution for extending homosexual rights seem to benefit from other ideologies: having a deterministic rather than a free will world view, and political liberalism as well as conservative libertarianism. On the other hand, the effects of religiosity were eliminated at the multivariate level of analysis.
C. E. Tygart (Fri,) studied this question.