Darren 🥚🐣🕊️ Profile picture
Oct 30, 2021 14 tweets 6 min read Read on X
1/ Does Living in California Make People Happy? A Focusing Illusion in Judgments of Life Satisfaction (Schkade, Kahneman)

"Self-reported overall life satisfaction was the same in both regions, though participants expected Californians to be happier."

web.mit.edu/curhan/www/doc…
2/ "When attention is drawn to the possibility of a change in any significant aspect of life, the perceived effect of this change on well-being is likely to be exaggerated.

"Paraplegics & lottery winners have many experiences that do not relate directly to their special status.
3/ "Once the situation in which they find themselves is no longer novel, people in these circumstances often (perhaps mostly) think of other things.

"College students were asked two questions: "How happy are you?" and "How many dates did you have last month?"
4/ "The correlation was .12 when the happiness question came first but rose to .66 when the order was reversed. Focusing attention on dating is apparently sufficient to induce the illusion that this aspect of life dominates one's well-being.
5/ "After correcting for demographic differences, there was no difference in self-reported overall life satisfaction between students in California and in the Midwest.

"This is remarkable, as satisfaction with several individual aspects had differences, all favoring California."
6/ "Self-reported overall life satisfaction was higher than what was predicted for a similar individual in another location.

"Although life satisfaction did not differ in the two regions, respondents in both regions predicted higher overall satisfaction for a Californian."
7/ "Respondents who imagined life in another region correctly anticipated many of the differences in satisfaction with individual aspects of life - especially climate, but they failed to appreciate that these those do not loom large in people's overall evaluations of their lives.
8/ "Easily observable aspects of life that distinguish the two regions are therefore assigned too much weight when people imagine life in a different place.

"In Table 1, the two regions differ most in satisfaction with aspects of life rated as relatively unimportant."
9/ "Thinking of the life satisfaction of someone in a different region apparently increased the perceived importance of these distinctive aspects (e.g. climate, cultural opportunities) without decreasing the perceived importance of other aspects of life."
10/ "When added to the model one at a time, four of the five climate-related aspects of life were successful as mediators (natural beauty was the exception), each separately rendering the region effect nonsignificant. Cultural opportunity was also an effective mediator."
11/ "It is difficult to simultaneously allocate appropriate weights to considerations that are at the focus of attention and to those currently in the background.

"The focusing illusion may also entail an exaggeration of the importance of ideas that are currently on the agenda.
12/ "A politician may leverage the focusing illusion by announcing small initiatives with great fanfare, encouraging the erroneous belief that these initiatives will make a substantial difference in people's lives.

"Nothing you focus on will make as much difference as you think.
13/ "A focusing illusion would lead people to exaggerate the adverse impact of climatic changes by underestimating the ability of future generations to adapt.

"People may exaggerate the future hedonic impact of such changes."

From Steve Koonin's book:
14/ Related reading:

Robust Beauty of Improper Linear Models in Decision-Making


Expert Political Judgment


If Money Doesn't Make You Happy, Then You Probably Aren't Spending It Right

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More from @ReformedTrader

Apr 25
1/ Moneyball: The Art of Winning an Unfair Game (Michael Lewis)

"Baseball was at the center of a story about the possibilities—and limits—of reason. It showed how an unscientific culture responds (or fails to respond) to the scientific method." (p. xiv)

amazon.com/Moneyball-Art-…Image
2/ "A small group of undervalued professional players & executives, many of whom had been rejected as unfit for the big leagues, turned themselves into one of the most successful franchises.

"How did one of the poorest teams, the Oakland Athletics, win so many games?" (p. xi)
3/ "Hitting statistics were abundant & had, for James, the powers of language. They were, in his Teutonic coinage, 'imagenumbers.' Literary material. When you read them, they called to mind pictures. He wrote... 'To get 191 hits in a season demands (or seems to) a consistency...
Read 6 tweets
Feb 4
New papers: February 2025
(I haven't read these, but the abstracts look interesting.)

Does Trend-Following Still Work on Stocks?
papers.ssrn.com/sol3/papers.cf…

Application of the Kelly Criterion to Prediction Markets
semanticscholar.org/paper/Applicat…

Jan 2025 edition:
x.com/ReformedTrader…
December Effect in Option Returns
papers.ssrn.com/sol3/papers.cf…

Unintended Consequences of Rebalancing
papers.ssrn.com/sol3/papers.cf…

Speculate against Speculative Demand
semanticscholar.org/paper/Speculat…

Seasonality Patterns in the Crisis Hedge Portfolios (Quantpedia)
quantpedia.com/seasonality-pa…
Bank Fragility After Mergers
papers.ssrn.com/sol3/papers.cf…

Mutual Fund Investors and the Economic Cost of Seeking Alpha
papers.ssrn.com/sol3/papers.cf…

Stock split signaling: Evidence from short interest
papers.ssrn.com/sol3/papers.cf…
Read 15 tweets
May 18, 2024
1/ Skewness and kurtosis

* Everything has excess kurtosis
* Unlike market returns, individual stocks aren't negatively skewed
* Option prices underestimate kurtosis and overestimate negative skewness
* Implied moments don't consistently predict stock returns
* Sell options?? Image
2/ Asset classes have fat tails, and most have negative skewness.

Kurtosis & expected returns


Kurtosis-Based vs Volatility-Based Asset Allocation


Impact of Skewness and Fat Tails on Asset Allocation

.



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3/ This has practical consequences, and it's a good idea to be prepared.

Give me a moment: Optimal leverage in the presence of volatility, skewness, and kurtosis


When Genius Failed: The Rise & Fall of Long-Term Capital Management


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Read 5 tweets
Jan 1, 2024
1/ Fact, Fiction, and Factor Investing (Aghassi, Asness, Fattouche, Moskowitz)

"We reference an extensive academic literature and perform simple but powerful analyses to address claims about factor investing."

aqr.com/Insights/Resea…
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2/ #1. Fiction: Factors are Data-Mined with No Good Economic Story

"Value, momentum, carry, and defensive/quality pass the more stringent statistical tests.

"Many of the factor tests conducted in papers are on variations of a few central themes."




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3/ "Value, momentum & defensive/quality applied to US individual stocks has a t-stat of 10.8. Data mining would take nearly a trillion random trials to find this.

"Applying those factors (+carry) across markets and asset classes gets a t-stat of >14."





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Read 14 tweets
Dec 31, 2023
1/ Happily Ever After? Cohabitation, Marriage, Divorce, and Happiness in Germany (Zimmermann, Easterlin)

"The formation of unions (separation or divorce) has a positive (negative) effect on life satisfaction. We also see a 'honeymoon period' effect."

researchgate.net/publication/49…
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2/ "The model's four terms describe different life stages for an individual who marries during the sample period. The intercept reflects the average life satisfaction of individuals in the baseline period [all noncohabiting years that are at least one year before marriage]."


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3/ " 'How satisfied are you with your life, all things considered?' Responses are ranked on a scale from 0 (completely dissatisfied) to 10 (completely satisfied).

"We center life satisfaction scores around the annual mean of each population subsample in the original population."
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Read 29 tweets
Aug 13, 2023
1/ Short-sightedness, rates moves and a potential boost for value (Hanauer, Baltussen, Blitz, Schneider)

* Value spread remains wide
* Relationship between value and rates is not structural
* Extrapolative growth forecasts drive the value premium

robeco.com/en-int/insight…
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2/ "The valuation gap between cheap and expensive stocks remains extremely wide. This signals the potential for attractive returns going forward."


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3/ "We observe a robust negative relationship between value returns and changes in the value spread.

"The intercept of ≈10% can be interpreted as a cleaner estimate of the value premium, given that it is purged of the time-varying effects of multiple expansions & compressions." Image
Read 7 tweets

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