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Why Smart People Make Big Money Mistakes And How To Correct Them

Why Smart People Make Big Money Mistakes And How To Correct Them

Lessons From The New Science Of Behavioral Economics
by Gary Belsky 2000 224 pages
3.96
1k+ ratings
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Key Takeaways

1. Mental accounting can help or hinder financial decisions

Every dollar spends the same.

Mental accounting is the tendency to categorize and treat money differently based on its source, purpose, or location. While this can be beneficial for preserving savings, it can also lead to poor financial choices. For example:

  • Treating "found money" (gifts, bonuses) as more spendable than earned income
  • Being overly conservative with inherited money or retirement savings
  • Justifying unnecessary purchases because they're from a different "account"

To combat harmful mental accounting:

  • Try to view all money equally, regardless of its source
  • Park windfall money in savings before deciding how to use it
  • Create a small "mad money" account for impulse spending to satisfy the urge without risking larger sums

2. Loss aversion and sunk cost fallacy lead to irrational choices

Losses hurt you more than gains please you.

Loss aversion is the psychological tendency to feel the pain of losses more intensely than the pleasure of equivalent gains. This often leads to:

  • Selling winning investments too soon to lock in gains
  • Holding onto losing investments too long, hoping for a rebound
  • Making riskier choices to avoid losses than to secure gains

The sunk cost fallacy compounds this problem by causing people to make decisions based on past investments rather than future prospects. Examples include:

  • Continuing to invest in a failing business because of money already spent
  • Finishing a bad book or movie because you've already started it
  • Keeping a gym membership you don't use because you paid for it

To combat these biases:

  • Focus on future potential rather than past investments
  • Set clear criteria for when to cut losses or take gains
  • Use automatic investment strategies to reduce emotional decision-making

3. Status quo bias and endowment effect make change difficult

It's all in how you look at it.

The status quo bias is the tendency to prefer things to stay the same, while the endowment effect causes people to overvalue things they already own. Together, these biases can:

  • Make it difficult to change investment strategies or financial habits
  • Cause people to hold onto underperforming assets
  • Lead to missed opportunities for improvement or growth

To overcome these biases:

  • Regularly review and reassess your financial situation and strategies
  • Consider decisions from multiple perspectives (e.g., as if you were starting from scratch)
  • Set up automatic processes for savings and investments to reduce reliance on active decision-making

4. Understand the impact of inflation and compound interest

All numbers count, even if you don't like to count them.

Many people underestimate the long-term effects of seemingly small numbers, particularly when it comes to:

  • Inflation eroding purchasing power over time
  • Compound interest growing savings exponentially
  • Small fees and expenses eating into investment returns

To harness the power of numbers:

  • Always consider the real (inflation-adjusted) value of money over time
  • Start saving and investing early to maximize compound growth
  • Pay close attention to fees and expenses, especially for long-term investments

5. Beware of anchoring and confirmation bias in decision-making

You pay too much attention to things that matter too little.

Anchoring is the tendency to rely too heavily on the first piece of information encountered when making decisions, while confirmation bias leads people to seek out information that confirms their existing beliefs. In finance, these biases can cause:

  • Overreliance on arbitrary price points or historical data
  • Ignoring contradictory information about investments or financial strategies
  • Making decisions based on incomplete or irrelevant information

To combat these biases:

  • Seek out diverse sources of information and opposing viewpoints
  • Use objective criteria and data to evaluate financial decisions
  • Be willing to change your mind when presented with new evidence

6. Overconfidence can be detrimental to financial success

Your confidence is often misplaced.

Overconfidence in one's own knowledge and abilities is a common pitfall in financial decision-making. It can lead to:

  • Excessive trading and market timing attempts
  • Underestimating risks and overestimating potential returns
  • Ignoring expert advice or diversification strategies

To temper overconfidence:

  • Keep a record of your financial decisions and their outcomes
  • Seek out and consider contrary opinions
  • Use index funds and passive investment strategies for the majority of your portfolio

7. Herd mentality often leads to poor investment choices

The trend isn't always your friend.

Following the crowd in financial decisions can lead to:

  • Buying high and selling low in response to market trends
  • Investing in "hot" sectors or assets without proper research
  • Missing out on contrarian opportunities

To avoid herd mentality:

  • Develop a long-term investment strategy and stick to it
  • Be skeptical of popular trends and "sure things"
  • Consider value investing principles and contrarian strategies

8. Emotions significantly influence financial decisions

Your emotions affect your decisions in more ways than you imagine.

Emotions play a crucial role in financial decision-making, often in ways we don't realize:

  • Mood can affect risk tolerance and investment choices
  • Fear and greed can lead to impulsive decisions
  • Difficulty in accurately predicting future emotional states can impact long-term planning

To manage emotional influences:

  • Implement a "cooling off" period before making major financial decisions
  • Use pre-committed strategies and automation to reduce emotional involvement
  • Practice mindfulness and emotional awareness in financial contexts

Last updated:

Review Summary

3.96 out of 5
Average of 1k+ ratings from Goodreads and Amazon.

Why Smart People Make Big Money Mistakes And How To Correct Them receives positive reviews for its accessible exploration of behavioral economics in personal finance. Readers appreciate its blend of psychology and finance, citing useful insights into common money mistakes. Many found the book's explanations of cognitive biases and their financial impacts enlightening. While some felt the content was familiar if they'd read other behavioral economics books, most praised its practical advice and engaging writing style. Criticisms were minimal, mainly focused on repetition of concepts or lack of groundbreaking ideas.

Your rating:

About the Author

Gary Belsky is an American author and journalist specializing in behavioral economics and personal finance. He has written several books on these topics, with "Why Smart People Make Big Money Mistakes And How To Correct Them" being one of his most well-known works. Belsky's writing style is noted for making complex economic concepts accessible to general readers. He has experience as an editor at ESPN The Magazine and Money magazine, contributing to his ability to communicate financial ideas effectively. Belsky's work often combines insights from psychology and economics to help readers understand and improve their financial decision-making processes.

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