# 49. Manipulation of bias and heuristics in decision making ## 49.5. Methodology/Refinements/Sub-species ### 49.5.13. Conservatism (Bayesian) This is the tendency to revise belief insufficiently when presented with new evidence. This results in our estimates of probabilities being conservative. The manipulator uses the inherent conservatism of the victim to provide support to conservative postures (see above).