Final answer:
Behavioral finance recognizes the importance of psychological factors in investment decisions, demonstrating that investors' biases and emotions can lead to seemingly irrational behaviors like excessive trading.
Step-by-step explanation:
Behavioral finance suggests that investors may be subject to bias which leads to excessive buying or selling of stocks.
Unlike traditional economic models that assume rational decision-making, behavioral finance integrates psychology to understand how emotions and cognitive biases can impact investors' choices.
Such biases include the tendency to overvalue a loss compared to an equivalent gain, or to over withhold on taxes due to the preference for a potential refund.
This perspective acknowledges that individuals can make decisions that seem irrational, such as excessive trading based on optimism or fear, implicating that the state of mind plays a significant role in economic behavior.