Outcome bias is the tendency to judge a decision based solely on the result of that decision, rather than by considering the quantity or quality of information that was available to a decision maker at the time the decision was made. This type of bias arises when people view the outcomes from past events and judge the decisions that were made to produce those outcomes. It can lead to false assumptions and inaccurate conclusions.

Outcome bias is a cognitive bias that is particularly pertinent to decision making. It occurs when an individual looks only at the end result of a decision, rather than the information that was available to make the decision. This can lead to inaccurate assumptions for future decisions and can cause individuals to utilize predetermined strategies that do not analyze available data.

Outcome bias can be dangerous, because individuals may disregard their own intuition or the opinions of others while attempting to future decisions. It may lead to a reliance on predetermined strategies or pre-set decisions that do not take into account any new information that has become available. For example, if a business decision is made based on an outcome bias, the decision may not consider other potential scenarios that could have been a result of the decision.

It is important to remember not to rely solely on the results of past decisions when making future decisions – instead, the quality of information available at the time of the decision should be taken into account. Individuals should carefully assess the data that has informed past decisions and accurately analyze any new information accordingly to make informed choices.

Outcome bias can also exist outside of decision making scenarios; for example, in sports. Coaches, players and fans may attribute success or failure to a singular factor, rather than looking at the full range of contributing factors that contributed to the end result. Utilizing outcome bias to make future decisions can cause further issues in this context, if players or teams are consistently held up to one standard, instead of assessing their ability in the context of the game.

Outcome bias can be avoided by considering the choice made and the quality of the data available at the time the decision was made, rather than the results of the decision. Understanding the potential factors that could have contributed to a final result, and taking into account any new information that may affect future decisions, can help an individual or organization make informed choices.