What psychological concept refers to the tendency to treat losses as more significant than gains of the same magnitude?

The correct choice, which refers to the tendency to treat losses as more significant than gains of the same magnitude, is the concept of loss aversion. Loss aversion is a fundamental principle in behavioral finance, stemming from the broader framework of prospect theory, which was developed by Daniel Kahneman and Amos Tversky. This concept highlights that individuals typically experience the pain of losses more intensely than the pleasure derived from equivalent gains. For example, losing $100 feels more impactful than the joy of gaining $100, leading to a bias in decision-making.

Loss aversion significantly influences investor behavior, often causing them to hold onto losing investments too long in hopes of breaking even or to react more dramatically to losses compared to equivalent gains. Understanding this concept is essential for market analysts and traders, as it shapes market trends and investor sentiment.