People are less likely to make the fundamental attribution error if:

This can be reduced if people suspect and take into consideration possible external factors or are motivated to use more effort in accurately viewing the situation. This stems from the knowledge that Fundamental Attribution Error or the Correspondence Bias (though some psychologists think they should not be used interchangeably) means that you are undeservedly explaining persons behavior by some internal factors (character or intention) instead of outside, external factors but when you do the same thing you will explain it by external factors. For example, if a person A is cut off in traffic by person B, the person A will think it is because person B is mean, selfish or something similar instead of taking into consideration that he maybe had to make the green light or his wife was giving birth or he was late. If a person A did that they would look at the external factors like being late and not because they are bad at driving or an unpleasant person. So basically you need to be more considerate and try to understand why would someone do something instead jumping to conclusions.