
Choiceology with Katy Milkman
Can we learn to make smarter choices? Listen in as host Katy Milkman--behavioral scientist, Wharton professor, and author of How to Change--shares stories of high-stakes decisions and what research reveals they can teach us. Choiceology, an original podcast from Charles Schwab, explores the lessons of behavioral economics to help you improve your judgment and change for good.
Season 1 of Choiceology was hosted by Dan Heath, bestselling author of Made to Stick and Switch.
Podcasts are for informational purposes only. This channel is not monitored by Charles Schwab. Please visit schwab.com/contactus for contact options. (0321-1S88)
Latest episodes

4 snips
Mar 30, 2020 • 35min
The Simple Choice: With Guests Shlomo Benartzi & Eric Sink
We are inundated with decisions in the modern world. What to wear, what to buy, what to watch, where to work, what to eat, who to call, where to live, what to study, when to exercise, how much to save, etc. And every decision, no matter how small, requires mental effort. But when a particular option is suggested to us ahead of time, the cognitive load is much smaller.In this episode of Choiceology with Katy Milkman, we explore the subtle power of default options.We begin with a simple experiment, offering free hot chocolate to random college students. A small shift in the way we present the option of a whipped-cream topping leads to a measurable change in the students’ preferences. Next up, a rather more consequential example. It’s the story of the web browser wars in the mid-1990s. You’ll get an insider’s perspective on the epic battle between Microsoft’s Internet Explorer browser, and Netscape Communications’ Navigator browser. Netscape had a substantial head start in the browser space, pioneering many of the features we take for granted in web browsing today. But Microsoft employed a simple strategy to grow their user base for Internet Explorer and quickly gained market share. The end result of this strategy was a seismic shift in the industry. You’ll hear from Eric Sink, a lead developer on the Internet Explorer project.To examine the science behind defaults, Katy invited behavioral economist Shlomo Benartzi to join her to discuss the ways that choice architecture and defaults can have a major impact on our behavior, particularly around retirement savings programs.Shlomo Benartzi is a Professor of Behavioral Decision Making at the UCLA Anderson School of Management and a Distinguished Senior Fellow at the University of Pennsylvania’s Behavior Change for Good Initiative. He is a senior academic advisor to the Voya Behavioral Finance Institute. He is also the author of the book Save More Tomorrow: Practical Behavioral Science Solutions to Improve 401(k) Plans.Finally, Katy offers practical advice on how to leverage defaults to reach your goals—and how to avoid the defaults that might trick you into less desirable options.Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcastIf you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.All corporate names are for illustrative purposes only and are not a recommendation, offer to sell, or a solicitation of an offer to buy any security.Shlomo Benartzi and Voya Financial are not affiliated with Schwab and any mentions should not be construed as a recommendation, endorsement of, or sponsorship by Schwab.(0320-0FL1)

Mar 16, 2020 • 33min
Judge the Judges: With Guests Daniel Kahneman, James Hutchinson & G.M. Pucilowski
Many episodes of this podcast deal with cognitive biases that can hinder our decision-making abilities. In this episode of Choiceology with Katy Milkman, we look at a different kind of error: how completely irrelevant information can negatively influence our judgments, making them varied and unpredictable.This variability of human judgment—or noise—is the topic of an upcoming book by Nobel Prize-winning economist Daniel Kahneman, with Cass Sunstein and Olivier Sibony. You’ll hear an interview with Kahneman later in the episode where he explains his preoccupation with the substantial and expensive effects of noise. He proposes ways to reduce the problem of noise for industries, businesses, and individuals who need to make more objective judgements.But first, we’ll dive into the world of wine judging. G.M. “Pooch” Pucilowski will take you on a guided tour of the California State Fair Commercial Wine Competition. You’ll hear about the criteria for judging different varietals—and the accompanying challenges that wine judges face as they swirl, sniff, and sip through dozens and sometimes hundreds of different wines. After years of coordinating and observing the judges, Pooch noticed a large amount of variability in the results. This may not be surprising, since taste is subjective. But after some tweaks to the process, he even began to notice that judges were inconsistent with themselves!Enter vintner and retired oceanographer Robert Hodgson. Pooch teamed up with Hodgson to devise a way to study and improve the consistency of wine judging and push for a more objective competition. The results were promising, but not without controversy.You can read Robert Hodgson’s research paper on wine judging here. G.M. “Pooch” Pucilowski is a speaker, writer, wine judge, and educator. He runs wine appreciation classes through his University of Wine.You’ll also hear about the potential role of chemical analysis and artificial intelligence in improving the results of wine judging from James Hutchinson, formerly of the Royal Society of Chemistry and currently CEO of KiwiNet.And finally, Katy explores the potential of leveraging noise to produce better decisions by employing the wisdom of crowds—and even “the crowd within.”Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast. If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts. Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.(0320-0FLK)

10 snips
Nov 18, 2019 • 35min
Creatures of Habit: With Guests Wendy Wood, Angela Duckworth & Stephan Kesting
Benjamin Franklin is one of the most revered figures in American history. He accomplished more in one lifetime--as a publisher, scientist, and politician--than most of us dream of. One argument for his success is that he was a creature of habit. His grueling daily schedule focused on repeating several habits of self-improvement. He hoped to achieve a perfect version of himself by automating certain positive behaviors. Whether or not he always stuck to his daily schedule of self-improvement is debatable, but his intuition about the importance of habit was right on the money.In this episode of Choiceology with Katy Milkman, we look at the power of habit in shaping our behavior--for the better and for the worse.We begin with firefighter Stephan Kesting. Stephan takes us through several of the drills that firefighters repeat over and over again in order to internalize certain behaviors. These behaviors can save lives in disaster scenarios. Stephan’s preparedness was put to the test early in his career when he and his team were called to a massive fire. You’ll hear how habits developed through intense training made all the difference in a life-or-death rescue operation.Stephan Kesting is an officer in the Delta Fire Department in Delta, British Columbia. He is also a black belt instructor in Brazilian jiu-jitsu.To look at the science behind habit, Katy invited two top scholars to share their insights into this phenomenon.First, Wendy Wood explains why we have habits, how they’re formed, and the reasons they’re often difficult to change. Wendy Wood is the Provost Professor of Psychology and Business at Dornsife College at the University of Southern California. She’s also the author of the new book Good Habits, Bad Habits: The Science of Making Positive Changes That Stick.Next, you’ll hear from Angela Duckworth on how habits relate to self-control and persistence. She offers strategies that leverage the power of habit to help mitigate self-control challenges. Angela Duckworth is the Christopher H. Browne Distinguished Professor of Psychology at the University of Pennsylvania and the author of Grit: The Power of Passion and Perseverance.Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.If you enjoy the show, please leave a ✪✪✪✪✪ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.(1119-99ZW)

5 snips
Nov 4, 2019 • 39min
Invisible Failures: With Guests Emily Oster, Sendhil Mullainathan & Linda Rodriguez McRobbie
If you’ve toured through any old world cities, you’ve probably marveled at ancient buildings that have stood the test of time. You might think to yourself, “They sure made things to last back in those days.” And while the Notre Dame Cathedral or the Parthenon or the Tower of London may seem like proof of the superior workmanship of a bygone era, what you don’t see are all the other buildings erected during the same period that have since crumbled or been torn down.In this episode of Choiceology with Katy Milkman, we look at a bias that often clouds the way we evaluate success and failure.We begin with the scientific awakening of Joseph Banks Rhine in the 1920s, during the peak of the spiritualist movement. Rhine was trained in science and wanted to apply the scientific method to his research into paranormal phenomena. Science taught him to be skeptical, so when Rhine’s research results seemed to demonstrate the existence of extra-sensory perception, or ESP, he believed he had found proof of a new aspect of human nature. The findings led to academic accolades and substantial financial support, until others tried to replicate his results.Next, we present a survey on musical acts and college drop-outs to demonstrate how easy it is to discount important information—when that information is not readily apparent. To look at the science behind this bias, Katy has enlisted two scholars to help explain it in different contexts. First, Sendhil Mullainathan provides useful examples of the bias in the world of investing and hiring. Sendhil is the Roman Family University Professor of Computation and Behavioral Science at the University of Chicago Booth School of Business. He’s also the co-author of the book Scarcity: Why Having Too Little Means So Much. Then, Emily Oster talks about the ways that doctors and parents sometimes unintentionally ignore important information when attempting to solve problems. Emily is a professor of economics at Brown University. Her most recent book is called Cribsheet: A Data-Driven Guide to Better, More Relaxed Parenting From Birth to Preschool. Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.The Schwab Center for Financial Research is a division of Charles Schwab & Co., Inc.(1119-9NGD)

32 snips
Oct 21, 2019 • 43min
Take the Deal! With Guests Daniel Kahneman, Colin Camerer & Luis Green
In this episode of Choiceology with Katy Milkman, we look at how framing a decision based on what you stand to lose versus what you stand to gain affects your tolerance of risk.Luis Green was a contestant on the popular TV game show Deal or No Deal. The game is largely one of chance, but there are moments during play where the contestant has an option to accept a cash offer to quit. At one point in the game, Luis was offered $333,000 to simply walk away. A guaranteed win! It seems like an obvious choice. But as you’ll hear from the story, there are other factors that influenced his decision.Katy illustrates these factors with a version of a famous experiment. Volunteers are presented with two differently worded but mathematically identical scenarios. A simple shift from framing the scenario as a potential gain to one of potential loss results in starkly different choices from the volunteers.Next, Katy speaks with special guest Daniel Kahneman about the underlying theory that explains human behavior in these types of situations.Daniel Kahneman is a professor of psychology and public affairs emeritus at the Woodrow Wilson School and the Eugene Higgins Professor of Psychology Emeritus at Princeton University. He was awarded the 2002 Nobel Prize in Economics for his pioneering research with Amos Tversky. Their work helped establish the field of behavioral economics. Kahneman is also the author of the bestselling book Thinking, Fast and Slow.Finally, Katy speaks with Colin Camerer about some of his favorite studies on risk seeking in the domain of losses, as well as practical approaches for avoiding this less-than-ideal behavior.Colin Camerer is the Robert Kirby Professor of Behavioral Finance and Economics at the California Institute of Technology, where he teaches cognitive psychology and economics. You can read his paper “Prospect Theory in the Wild: Evidence from the Field” here.Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.(0919-9CT3)

4 snips
Oct 7, 2019 • 35min
Your Own Advice: With Guests Angela Duckworth, Lauren Eskreis-Winkler & Mike Mangini
Say you have a colleague who is struggling to complete a project at work. You might offer them some tips and tricks based on your own experience with similar projects. And it’s reasonable to expect those tips might be helpful to your colleague. But what if it turned out that the act of giving that advice might provide a measurable benefit to you as well?In this episode of Choiceology with Katy Milkman, we look at how giving advice can benefit the giver—as much or even more than the person receiving the advice.We begin the episode with Mike Mangini. Mike is a talented drummer, best known in the world of progressive rock. He has toured and recorded with numerous artists, including Steve Vai and Extreme. He also spent many years teaching drums privately and at the Berklee College of Music. It was in the process of teaching that he developed a system to codify his approach to playing drums. That system helped Mike navigate an intense audition for one of the biggest progressive rock bands in the world.From the heady world of arena rock, we move to more practical examples of the power of giving advice. You’ll hear several people offering advice on a number of challenges—and then hear them realize the usefulness of their own advice in real time.Next, Katy speaks with both Lauren Eskreis-Winkler and Angela Duckworth about the science behind advice giving. Lauren had the initial insight into this phenomenon. She and Angela, her doctoral adviser, ran a large-scale field experiment, along with Katy and Dena M. Gromet. The study demonstrates the measurable power of the advice-giving effect.Lauren Eskreis-Winkler is a postdoctoral fellow at the Wharton School at the University of Pennsylvania. You can read her paper on the advice-giving effect here.Angela Duckworth is the Christopher H. Browne Distinguished Professor of Psychology at the University of Pennsylvania and the author of Grit: The Power of Passion and Perseverance.Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.(1019-92P1)

6 snips
Sep 23, 2019 • 35min
Not Quite Enough: With Guests Howard Scott Warshaw, Sendhil Mullainathan & Anuj Shah
Think back to a situation where you’ve been really pressed for time. Chances are good that the pressure of a deadline or an appointment caused you to be (a) hyper-focused and efficient or (b) panicked and prone to errors.Now think of a situation where you had plenty of available time. While you were probably much less stressed, it’s also likely that the superpowers of hyper-focus didn’t come so easily.In this episode of Choiceology with Katy Milkman, we look at how not having enough time or money or other resources affects behavior and decision-making.We begin the episode with Howard Scott Warshaw. Warshaw was a very successful game developer at Atari during the company’s heyday in the 1980s. He worked on several best-selling titles, including the hit game Yar’s Revenge. However, he is probably best known for creating E.T. the Extra Terrestrial video game. Some consider it the worst commercial video game ever released. The reason E.T. was so unsuccessful as a gaming experience and a commercial product may have more to do with Atari’s development timeline than with Warshaw’s concept or design.Next, we test our hypothesis about resource scarcity with a simple bean-bag-toss game. Half of our players were given five bags to throw, while the other half were given only one. You may be surprised to find out which players were more accurate, on average, with their tosses.Katy then jumps into the science of scarcity with Sendhil Mullainathan. Mullainathan explains that while scarcity taxes the mind and can lead to poor decision-making, it can also pay dividends with increased focus.Sendhil Mullainathan is the Roman Family University Professor of Computation and Behavioral Science at the University of Chicago Booth School of Business. He is also the author of Scarcity: Why Having Too Little Means So Much.Anuj K. Shah is a colleague and research collaborator with Sendhil Mullainathan. He joins Katy to discuss simple strategies to help offset the mental load of scarcity. He is an associate professor of behavioral science at the University of Chicago Booth School of Business.Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.(0919-9CPR)

Sep 9, 2019 • 33min
The Lucky Loonie: With Guests Peter Jordan, Trent Evans & Don Moore
There’s something satisfying about the close door button in an elevator, especially when you’re in a rush. However, it turns out that most of those close door buttons aren’t actually connected to anything; they have no effect. So why are they there?In this episode of Choiceology with Katy Milkman, we explore a quirk in the way people understand their ability to influence certain events.The 2002 Winter Olympics in Salt Lake City were a watershed moment for the Canadian men’s and women’s hockey teams. The men’s team hadn’t won a gold medal in 50 years, and the women’s team had never won gold, coming up short in prior Olympic events. The Canadians were facing powerhouse American teams, so they needed every advantage they could get.Enter Trent Evans. He was part of the Olympic ice-making team, though his allegiance was with the Canadians. During the initial ice making process, he marked the center of the rink with a small artifact in hopes that it would bring good luck to the Canadian teams. That artifact came to be seen by many as a key ingredient to success in the gold medal games.Broadcaster Peter Jordan covered the games for the Canadian Broadcasting Corporation and recounts the subterfuge involved in hiding the good luck charm. Peter was the host of the CBC television series It’s A Living for seven years.Good luck charms and superstitious beliefs are common, but generally easy to disprove. Still, this tendency to overestimate one’s influence appears regularly, even among skeptics.As an experiment, we had several volunteers roll a pair of dice in a simple board game scenario where they were aiming to roll a certain number to win the game. In almost every iteration of the experiment, our highly skeptical volunteers displayed this overestimation of influence.To learn more about the reasons for this behavior, we invited Don Moore to talk about his research on the phenomenon. Don is the Lorraine Tyson Mitchell Chair in Leadership and Communication at UC Berkeley Haas.To close the episode, Katy explores some of the contexts where this bias may impact important decisions in business and in life.Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.Important Disclosures:All expressions of opinion are subject to change without notice in reaction to shifting market conditions.The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.Diversification and asset allocation strategies do not ensure a profit and cannot protect against losses in a declining market.The Schwab Center for Financial Research is a division of Charles Schwab & Co., Inc.(0919-9AR2)

May 27, 2019 • 37min
Best-Laid Plans: With Guests Ken Bowersox, Robert Godwin & Bradley Staats
If you’ve ever been through a home renovation, you know that it often takes more time or more money (or both!) than the contractor’s original estimate. But why is that? Experienced contractors renovate homes all the time. And yet they still regularly face delays and cost overruns.
In this episode of Choiceology with Katy Milkman, we explore a tendency people have to be overly optimistic about what they can accomplish in a set period of time—starting with a story of the phenomenon playing out on a massive scale.
The International Space Station (ISS) is a marvel of human ingenuity. It’s the largest manned object ever put into space. It orbits the earth every 90 minutes. It contains 8 miles of wire and is the third brightest object in the night sky. At a cost of well over $100 billion, it is also the most expensive object ever built. At the beginning of the project, however, it was expected to cost only a small fraction of that amount.
Robert Godwin has written extensively about the ISS. He explains the tumultuous history of the project, which started as a relatively modest American plan to succeed the Skylab station and eventually becoming a massive international collaboration hampered by political and technical challenges. Godwin is the co-author of the book Outpost in Orbit: A Pictorial & Verbal History of the International Space Station.
Astronaut Ken Bowersox was aboard the ISS during one of the most difficult periods of the project. He recounts the harrowing details of an emergency return trip to Earth after tragedy struck the American shuttle program.
In hindsight, it’s easy to see how a project that involves international cooperation and cutting-edge technology could run into delays and cost overruns. However, this tendency toward over-optimism manifests itself even in simple projects back on Earth.
As an experiment, we had several volunteers sit down, separately, with a child’s engineering toy. We asked them to estimate how long it would take to build a simple machine, using the included step-by-step instructions. The difference between their estimates and reality is telling. And this is a toy designed for 8-year-olds!
Bradley Staats of the University of North Carolina’s Kenan-Flagler Business School joins Katy to discuss the mechanics of this bias and to give examples of a number of different domains where this tendency can cause problems. He also introduces some simple strategies to help reduce forecasting errors.
Finally, Katy expands on some of those strategies in order to help you make better estimates around the time, effort and expense required to meet your goals.
Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.
If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.
Important Disclosures:
All expressions of opinion are subject to change without notice in reaction to shifting market conditions.
The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.
Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.
The Schwab Center for Financial Research is a division of Charles Schwab & Co., Inc.
(0519-9AY5)

May 13, 2019 • 33min
Boxed In: With Guests Sophie Morgan, Modupe Akinola & Dolly Chugh
Assuming you live in the northern hemisphere, which would you say is colder: a day in March or a Day in April? On average, of course, March is colder than April, but there’s probably not a big difference in temperature between March 31 and April 1. If you’re like most people, though, you put March days in the colder March category and April days in the warmer April category. It’s a useful shortcut, but it doesn’t always give you the best information about the temperature on individual days.
This tendency to quickly categorize time, objects and people helps us to simplify a complex world, but it can also lead to important errors.
In this episode of Choiceology with Katy Milkman, we look at the ways our snap judgments work for us and against us.
First, Katy brings you a profile of Sophie Morgan, tracing her career path from relative unknown to reality TV model to lead presenter at one of the largest sporting events in the world. And you’ll find out what makes Sophie unique in her field.
Next, we hit the street with a quick questionnaire to see how people make judgments when faced with uncertainty or incomplete information. You can try these questions yourself, before you listen:
Question 1: William is an opera fan who enjoys touring art museums when he goes on vacation. He enjoys playing chess with his friends. Which is more likely?
A: William is a professional violinist for a major symphony orchestra.
B: William is a farmer.
Question 2: Amy is 29 years old. She’s single, outspoken and very bright. As a student, she majored in English literature and was deeply interested in theater. Which is more probable?
A: Amy is a bank teller.
B: Amy is a bank teller and writes an arts review for her local newspaper.
After revealing the answers to our questionnaire, Katy is joined by Modupe Akinola, of Columbia Business School and Dolly Chugh of New York University’s Stern School of Business to explore the functions and flaws of these types of judgments and the mental architecture behind them.
Dolly Chugh is the author of The Person You Mean to Be: How Good People Fight Bias.
Finally, Katy gives you some simple strategies to counteract some of the negative impacts of snap judgments and implicit attitudes.
Choiceology is an original podcast from Charles Schwab. For more on the series, visit schwab.com/podcast.
If you enjoy the show, please leave a ⭐⭐⭐⭐⭐ rating or review on Apple Podcasts.
Important Disclosures:
All expressions of opinion are subject to change without notice in reaction to shifting market conditions.
The comments, views, and opinions expressed in the presentation are those of the speakers and do not necessarily represent the views of Charles Schwab.
Data contained herein from third-party providers is obtained from what are considered reliable sources. However, its accuracy, completeness or reliability cannot be guaranteed.
The Schwab Center for Financial Research is a division of Charles Schwab & Co., Inc.
(0519-9AKG)