Today, we will be talking about the Puritanical Bias.
What is it?
The tendency to attribute cause of an undesirable outcome or wrongdoing by an individual to a moral deficiency or lack of self-control rather than taking into account the impact of broader societal determinants.
An example might be, "These people sit around all day in their apartments on welfare watching TV, but won't take the time to get out and find a job!"
In this case, a selection of persons might have existed for some time under dire economic and/or socially oppressive circumstances, but individuals from that selection have been cognitively dis-empowered by these circumstances to decide or act on decisions to obtain a given goal. 
Where does it occur?
It is one of the cognitive biases which takes place in general nature of humans & in lot of scenarios requiring evaluation.
Why do I need to know?
This bias can closely be linked with our ability to judge things without evaluating the circumstances fully.
Understand that you have a natural tendency to judge things.
References & Studies: -
Learn something new every month. Join the lesson club!
Looking for previous issues? Take a look at Archives.