Answer:
Confirmation bias, a type of Cognitive Bias
Step-by-step explanation:
Cognitive bias is a type of thinking where people's personal views of matters shape their thinking and beliefs. They are quick to draw inferences based on preconceived beliefs. They do not analyze all aspects of the matter but simply conclude on things based on what they initially thought. A type of cognitive bias that is evident in the text above is confirmation bias.
Confirmation bias is a conscious effort to search out that which we believe in and leave out what we do not believe in. In dismissing the beliefs of parents on parents, the writer simply expressed his preconceived notions on the subject and projected it as the best.