







Last week, we published the Tenth Safe Withdrawal Rate Study! Amazing how time flies! I did about one case study every three weeks for the last 6 months! And I could even include another one if I were to count the one I did for the ChooseFI podcast back in 2017. In fact, the ChooseFI … Continue reading Ten Lessons From Ten Safe Withdrawal Rate Case Studies
The Safe Withdrawal Rate Series - Early Retirement Now
Discover the Safe Withdrawal Rate Series: 4% Rule, Personalized strategies, sequence risk, FIRE planning, free Google Sheet, 2025 updates.

Principles of Retirement Tax-Planning - SWR Series Part 44 - Early Retirement Now
March 22, 2021 – It’s tax season in the U.S. right now! Even though that deadline has just been pushed back to May 17, taxes are on everybody’s mind, so this is a good time to write about the topic in the context of the Safe Withdrawal Rate Series. Until now, I haven’t written all that … Continue reading Principles of Retirement Tax-Planning – SWR Series Part 44

Study Hacks - Decoding Patterns of Success - Cal Newport
The Study Hacks blog by author and professor Cal Newport - on deep work, success, productivity, work-life balance.
Right on Time: How Cash Helps Families Move Through Life's Transitions - Economic Security Project
Executive Summary Over the past decade, more than 250 guaranteed income pilots, programs that provide people with regular cash with no restrictions on how they use it, have run across 40 states and the District of Columbia. That research has revealed many learnings, and this report focuses on one clear takeaway: cash has its largest…

Misunderstanding Savings Growth: Implications for Retirement Savings Behavior
People systematically underestimate exponential growth. This article illustrates this phenomenon, its implications, and some potential interventions in the context of saving for retirement, where savings grow exponentially over long periods of time. Experiment 1 shows that a majority of participants expect savings over 40 years to grow linearly rather than exponentially, leading them to grossly underestimate their account balance at retirement. Experiment 2 demonstrates that this misunderstanding leads to underestimates of the cost of waiting to save, which makes putting off saving more attractive than it should be. Finally, Experiments 3–5 show that highlighting the exponential growth of savings motivates both college students and employees to save more for retirement. Making clear to employees the exponential growth of savings before they make crucial decisions about how much to save may be a simple and effective means of increasing retirement savings.

Why Are We Still Doing This?
Hi! If you like this piece and want to support my work, please subscribe to my premium newsletter. It’s $70 a year, or $7 a month, and in return you get a weekly newsletter that’s usually anywhere from 5000 to 185,000 words, including vast, extremely detailed analyses

Post-publication critique at top-ranked journals across scientific disciplines: a cross-sectional assessment of policies and practice
Journals exert considerable control over letters, commentaries and online comments that criticize prior research (post-publication critique). We assessed policies (Study One) and practice (Study Two) related to post-publication critique at 15 top-ranked journals in each of 22 scientific disciplines ( N = 330 journals). Two-hundred and seven (63%) journals accepted post-publication critique and often imposed limits on length (median 1000, interquartile range (IQR) 500–1200 words) and time-to-submit (median 12, IQR 4–26 weeks). The most restrictive limits were 175 words and two weeks; some policies imposed no limits. Of 2066 randomly sampled research articles published in 2018 by journals accepting post-publication critique, 39 (1.9%, 95% confidence interval [1.4, 2.6]) were linked to at least one post-publication critique (there were 58 post-publication critiques in total). Of the 58 post-publication critiques, 44 received an author reply, of which 41 asserted that original conclusions were unchanged. Clinical Medicine had the most active culture of post-publication critique: all journals accepted post-publication critique and published the most post-publication critique overall, but also imposed the strictest limits on length (median 400, IQR 400–550 words) and time-to-submit (median 4, IQR 4–6 weeks). Our findings suggest that top-ranked academic journals often pose serious barriers to the cultivation, documentation and dissemination of post-publication critique.

Temporal Reframing and Participation in a Savings Program: A Field Experiment
This study explores whether framing savings in more or less granular formats can increase sign-ups for a recurring deposit program in a FinTech environment. , A growing number of American workers are now freelancers and thus, responsible for their own retirement savings, yet they face psychological hurdles that hamper them from saving enough money for the long term. Although prior theory-derived interventions have been successful in addressing some of these obstacles, encouraging participation in saving programs is a challenging endeavor for policy makers and consumers alike. In a field setting, we test whether framing savings in more or less granular formats (for example, saving daily versus monthly) can encourage continued saving behavior through increasing the take up of a recurring deposit program. Among thousands of new users of a financial technology app, we find that framing deposits in daily amounts as opposed to monthly amounts quadruples the number of consumers who enroll. Furthermore, framing deposits in more granular terms reduced the participation gap between lower- and higher-income consumers: three times as many consumers in the highest rather than lowest income bracket participated in the program when it was framed as a $150 monthly deposit, but this difference in participation was eliminated when deposits were framed as $5 per day.

10 Small Habits That Have A Huge Return On Life - Darius Foroux
A lot has been written about forming habits. How long does it take? How do you break habits? How do we adopt new one? Focus on WHAT.


Save More Today or Tomorrow: The Role of Urgency in Precommitment Design
To encourage farsighted behaviors, previous research suggests that marketers should invite consumers to precommit to adopting these behaviors “later.” However, the authors propose that people will draw different inferences from different types of precommitment offers, and that these inferences can help explain when precommitment is (and is not) effective at increasing adoption of farsighted behaviors. Specifically, the authors theorize that simultaneously offering consumers the opportunity to adopt a farsighted behavior now or later (i.e., offering “simultaneous precommitment”) may signal that the behavior is not urgently recommended; however, offering consumers the opportunity to adopt that behavior immediately and then, only if they decline, inviting them to adopt it later (i.e., offering “sequential precommitment”) may signal just the opposite. In a multisite field experiment (N = 5,196), the authors find that simultaneously giving consumers the chance to increase their savings now or later reduced retirement savings. Two preregistered lab studies (N = 5,080) show that simultaneous precommitment leads people to infer that taking action is not urgently recommended, and such inferences predict less adoption of recommended behaviors. Importantly, offering sequential precommitment increases inferred urgency, predicting greater adoption. Together, this research advances knowledge about the limits and potential of precommitment.

The Top Twenty-five New Yorker Stories of 2023
The articles that sustained the longest hold on readers during a year when many avoided the news.

Good news, everyone! I have a short piece coming out in The Conversation on Monday that explains the main issues with this study. It's impossible for me to have the same media reach as the original press release. So I'd be extremely grateful if people could help me share it as widely as possible 🙏
G. Willow Wilson
Good news, everyone cnn.com/2026/05/14/health/arts-ageing…
This is a great read and very relevant to anyone measuring outcomes at base-line and following exposure. Really lucid treatment of the pitfalls of change-scores and some easy-enough recommendations.
Peter Tennant