Generalizing: Disconfirming Instances

Rule #2: We should look for disconfirming as well as confirming instances of a generalization.

We should actively look for counterexamples: Ss that are not P. If we have looked hard for negative instances and haven't found any, we can be more confident of a generalization than we can if we haven't looked at all.

Example:

To continue with the previous example, we should look for Toyota owners who are satisfied with their cars.


Sample size and variety | Disconfirming instances |
Sensible links between S and P
Generalizing

© Copyright 1998, W.W. Norton & Co.