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People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. Chapter 1 starts with a discussion of the relationship between and an evaluation of heuristics and biases, heuristics deriving from biases we develop. Biases grow from the brain's limited information processing power, developing into mental blind spots. An overview of the brain is then given, including explanations of neurons, axons, grey and white matter, lobes, and hemispheres. Behavioral biases are presented in three categories: attention biases (emerging from the way our brains process incentives), memory biases (since human memory is flawed), and knowledge biases (stemming from the interactions between new information and what we have experienced in the past). The book's organization is broken down, and the chapter ends with a reminder that our own biases are the hardest to understand.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. This chapter describes modes of thinking and the brain. Three modes of thinking that are key to investing are instinct, intuition, and reasoning, each of which is supported by different brain networks. The amygdala supports instinct; the default mode network and basal ganglia support intuition; the task network (external thinking), default mode network (internal thinking), and areas specialized in language, perception, and memory support reason. However, context is extremely important in determining which mode of thinking will be used in a specific situation. When reason is not used and intuition and instinct are relied on too much, we develop cognitive biases.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. Chapter 3 is an in-depth look at attention biases. Building on chapter 2, many attention biases span intuition and reason, marked by failures to attend to key information while devoting too much attention toward other information. This chapter starts by discussing focused attention biases: salience bias, default effect, optimism bias, ostrich effect, framing bias, hindsight bias, in-group bias, and hot hand effect. Next, cognitive illusions related to attention are unpacked, including illusion of control, Gambler's fallacy, and decision fatigue. These biases stem from interactions between our attention systems and our conscious beliefs. Relevant research, examples, and relevant brain mechanisms to each bias are also described as well as important remedies to each bias when it comes to investing.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. Chapter 4 focuses on memory. Only memories that the brain considers to be relevant features of reality are stored. Memory systems include sensory storage, information we can work on, and long-term memories; the hippocampus is essential for storing memories as well as transferring stored memories. Several factors cause certain events or features to be more memorable to us. These factors include visualization, having recently experienced something, and emotion. Because emotions are personal, they can distort memories, storing some details without other important details. Deeply processed information-information built into a narrative and that is actively related to previous memories-sticks with us as well. Context is vital in retrieval of memories; we access more memories when the current context overlaps with that of the memories' contexts.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. Chapter 5 covers a variety of biases that are directly tied to our memory systems. Some of these memory biases have to do with the likelihood of later recall, others with the undue influence of things we have seen before affecting our thinking about current positions. While these biases can ultimately be helpful, they can also result in critical errors when it comes to analyzing our positions. The biases covered are the availability bias, primacy effect, recency bias, endowment effect, consistency bias, sunk cost effect, affect bias, and expectancy bias. Definitions, background research, and relevant brain mechanisms are all explained for each bias along with that bias's relevance to investing and how to avoid falling into the bias.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. This chapter gives an overview on brain functions related to knowledge. Knowledge is constantly being accumulated, bridging the gap between attention and memory. Patterns are found by the brain and then automatically grouped together; identifying these patterns allows us to take shortcuts by acting similarly toward whole sets of information, gaining speed and accuracy. However, this process has the potential to lead us to find meaning that does not actually exist in incoming information. By noticing similarities and differences between environments and situations, we form mental models and schemas. Priming occurs when prior information quickly and automatically influences our current thinking; however, the difficulty with fast associations like this is realizing when they are incorrect.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. Chapter 7 goes into the different types of knowledge bias. Sometimes what we know matches the context we are dealing with, but sometimes we impose incorrect patterns onto a situation. Our knowledge-and perception of our knowledge-can influence our way of thinking, and having a deep knowledge about a subject leaves us vulnerable to a set of biases that are rooted in knowing too much. We overreach our assumptions because we believe we know how things will play out, leading to mental laziness and the failure to question ourselves. Some of these biases come from believing we understand more than we actually do, others happen due to our becoming blind to key information based on our considerable degree of knowledge and still others are driven by social behavior.

People can be irrational in the financial market setting, leading to catastrophic mistakes and costing millions of dollars. We tend to take credit for our successes but disown our failures. We have limited powers of attention, preventing us from noticing critical factors in investment analysis. Memories can lead to faulty assumptions that serve as the foundation for financial decisions. Emotions often lead to giving inappropriate weight to some factors while discounting others. Researchers have discovered over 100 predictable biases that lead people to make consistent errors. The chapters cover financial biases most relevant to investing, evidence of how they develop, and practical strategies that can help investors improve their performance by minimizing bias's negative influence. This book offers readers a guide to cognitive bias as it occurs in real financial situations and to categorizing the different biases based on fundamental brain science while emphasizing practical implications of financial decision making and providing a scientific basis for adjusting investment practices to avoid cognitive traps. Chapter 8 provides guidance offering best practices and advice geared toward enhancing the decision-making process and minimizing the undue influence of heuristics and biases in the investment process. The main strategies discussed are using a rules-based investment process, active management, and limiting bias in the idea generation process. Further techniques within each of these strategies are also given. Taking an active role with this chapter will bring about the most benefit in improving the investing process. Employing these techniques will enable vigilance and objectivity without having to take on each individual bias one-by-one. Becoming a better investor is a constant endeavor; part of the challenge is recognizing how personal thinking is influenced by bias and adjusting processes to compensate. Knowledge about bias is only the first step.