Definition of Self Serving Bias
A self-serving bias is a bad habit of the individual where he/she takes the credit for every positive thing while blaming others for negative events. This habit can be developed by the effect of culture, age, clinical diagnosis, etc. This habit is commonly found widely across populations.
Example of Self-serving Bias:
An athletic team won the current match and gave its credit to their fitness, effort, practice, and hard work. In the next game, they lose the game and put all the blame on the bad decisions taken by the referees.