From what I understand many twin studies have been done, and generally they indicate a much stronger genetic effect than is generally thought. But because thes

From what I understand many twin studies have been done, and generally they indicate a much stronger genetic effect than is generally thought. But because these kinds of findings are so sensitive and have a long history of being abused, there's a tendency to downplay them or at least avoid discussing them. Maybe even a (slight?) tendency to avoid further research. But please correct me if I'm wrong. Most of my thoughts on the matter come from one of Steven Pinker's books and I've never done a thorough review on the subject.