Answer: The relative deprivation principle
Step-by-step explanation:
The relative deprivation principle is based on a concept that an individual feels cheated of some event or happening when they hear that same people who participated in such event gained better than them. This is a normal occurrence in many offices as regards promotions; when an individual gets to discover that their was a general raise in pay but his was the smallest ratio amongst the other person's, he would feel deprived. Also such scenario do happen in promo being carried out in business between end users who don't get the same promo price despite they feel they were supposed to get same.