“越难得到越珍惜”有了科学解释

Core Insights - The article discusses the psychological and neurological mechanisms behind the concept of "sunk cost," explaining how individuals often continue investing in a situation based on prior investments rather than the current value of the situation [1][2]. Group 1: Psychological Mechanisms - The concept of "sunk cost" suggests that the value individuals assign to an experience is influenced more by the costs they have incurred rather than the actual value of the experience itself [1]. - A recent study from Stanford University reveals that the brain's reward system, particularly the release of dopamine, is linked to the effort expended to achieve a reward, indicating that higher costs lead to greater dopamine release upon receiving the reward [2]. Group 2: Neurological Findings - The study identifies acetylcholine as a key chemical that helps the brain track effort, guiding dopamine release in response to increased effort [2]. - This biochemical response reinforces the behavior of persisting through challenges, suggesting an evolutionary advantage where effort leads to rewards in resource-scarce environments [3].