Anchoring bias refers to the tendency to rely too heavily on the first piece of information received when making a decision, even if it is irrelevant or outdated.

The endowment effect refers to the psychological phenomenon where individuals place a higher value on items they own compared to items they do not own, even if the objective value of the items is the same.

Heuristics and biases refer to the mental shortcuts and cognitive biases that individuals use to make decisions, often leading to deviations from rational behavior.

Oligopoly refers to a market structure where a small number of large firms control a majority of the market share, leading to interdependence and strategic interactions among the firms.

Loss aversion, the tendency to feel the pain of a loss more strongly than the pleasure of an equivalent gain, can influence firms' pricing decisions in oligopolistic markets, leading to price rigidity and strategic pricing behavior.

Social proof refers to the psychological phenomenon where individuals conform their behavior to the actions and opinions of others, leading to herd behavior and bandwagon effects in markets.

Game theory is a mathematical framework used to analyze strategic interactions among rational decision-makers, providing insights into how firms compete and cooperate in different market structures.

Framing effect refers to the psychological phenomenon where the way information is presented or framed can influence individuals' preferences and choices, even if the underlying facts remain the same.

Sunk cost fallacy refers to the tendency of individuals to continue investing in a project or venture even when it is clear that it is not profitable, due to the psychological attachment to the sunk costs already incurred.

Affect heuristic refers to the psychological phenomenon where individuals make decisions based on the emotional impact or feelings associated with a particular choice, rather than a rational analysis of the facts.

Product differentiation refers to the strategy of creating a unique product or service that stands out from competitors' offerings, allowing firms to charge a premium price and attract a loyal customer base.

Availability heuristic refers to the psychological phenomenon where individuals make decisions based on the information that is most readily available or easily recalled, even if it is not necessarily representative of the overall population.

Social proof refers to the psychological phenomenon where individuals are more likely to purchase a product or service if they see others doing the same, leading to bandwagon effects and increased demand.

Prospect theory is a behavioral economic model that describes how individuals make decisions under risk and uncertainty, taking into account the psychological impact of gains and losses.

Collusion refers to the illegal practice of firms agreeing to coordinate their actions, such as pricing, output, or market share, in order to reduce competition and maximize joint profits.