The Veblen effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is priced higher. This is because consumers often associate higher prices with higher quality and status.

The decoy effect is a psychological phenomenon in which consumers perceive a product as being less valuable when it is priced lower than a similar product that is priced higher. This is because consumers often perceive the lower-priced product as being of lower quality.

The prestige effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is presented in a luxurious or exclusive manner. This is because consumers often associate luxury and exclusivity with high quality and status.

The celebrity effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is endorsed by a celebrity or other influential person. This is because consumers often trust and admire celebrities and other influential people, and they believe that these people would only endorse products that are of high quality.

The scarcity effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is scarce or difficult to obtain. This is because consumers often desire things that are rare or exclusive.

The promotion effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is offered with a discount or other special promotion. This is because consumers often believe that they are getting a good deal when they purchase a product on sale.

The aesthetic effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is presented in a visually appealing manner. This is because consumers often associate beauty with quality and value.

The emotional effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is associated with a positive emotion or experience. This is because consumers often make purchasing decisions based on their emotions.

The differentiation effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be unique or different from other products. This is because consumers often value products that are seen as being unique or special.

The durability effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be durable or long-lasting. This is because consumers often value products that are seen as being able to withstand wear and tear.

The reliability effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be reliable or dependable. This is because consumers often value products that are seen as being able to perform their intended function consistently and without fail.

The safety effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be safe or non-toxic. This is because consumers often value products that are seen as being able to protect them from harm.

The environmental effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be environmentally friendly or sustainable. This is because consumers often value products that are seen as being able to protect the environment.

The social responsibility effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be socially responsible or ethical. This is because consumers often value products that are seen as being able to make a positive contribution to society.

The customization effect is a psychological phenomenon in which consumers perceive a product as being more valuable when it is perceived to be customizable or personalized. This is because consumers often value products that are seen as being able to reflect their individual tastes and preferences.