Additive bias is the tendency that prompts solving problems from a wrong or non expected way. Anthony Sanni said, "It can be examplified by a person who works a project through addition even when subtraction is a better approach."[1]
It is a cognitive urge/ tendency of human beings facing problem that they add resources instead of taking or subtracting. According to Keith Holyoak, "Humans seeks to strengthen an argument or a manager seeks to encourage desired behaviour, thus requires a mental search for possible changes.[2]
Leidy Klotz conducted a series of laboratory experiments, demonstrating how, when faced with a problem, subjects were more likely to add elements rather than subtract, even where subtraction would have led to a better solution.[3]