Biases about man-made cancer among researchers

Can sociological variables significantly predict researchers' positions on a scientific issue? Carcinogenesis offers a good test case because it is not definitively established how important man-made substances are as contributors to human cancer. American cancer researchers divide on this issue, some broadly emphasizing the importance of man-made carcinogens, others consistently minimizing their importance relative to natural carcinogens. We find that cancer researchers who are male, are affiliated with a medical school, and have more publications, are more likely than their colleagues to minimize the importance of man-made carcinogens.