| Despite his hereditarianism and eugenicism, Hans kept on wanting to help people by more conventional psychological means. |
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| In the 1940s, hereditarianism and behaviourism were not independent of each other, but instead fed off each other. |
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| After 1890, hereditarianism gained increasing support, due in part to the work of German biologist August Weismann. |
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| Hence, complete hereditarianism about within-group differences is logically compatible with complete environmentalism about between-group differences. |
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| He demonstrated that hereditarianism and environmentalism were not different and opposed traditions in the minds of many Australian social reformers. |
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