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Category: Fake data

[139] Artificial Deadlines (Part 2):
Retrograding Ariely & Wertenbroch (2002)

Posted on September 2, 2026September 8, 2026 by Uri, Joe, & Leif

As described in our previous post (.htm), back in 2006 [email protected] sent three Excel spreadsheets, each “last saved” by user “Dan Ariely”, to then-PhD-student-but-now-full-professor Kyle Hyndman. Those spreadsheets contained the data required to reproduce the results reported in Ariely and Wertenbroch’s (2002) influential article on deadlines and procrastination. In our previous post, we reported data…

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[138] Artificial Deadlines (Part 1): Evidence of Fraud in an Influential Study About Procrastination

Posted on August 31, 2026September 3, 2026 by Uri, Joe, & Leif

A new paper in Psychological Science (.htm) reports a failure to replicate Study 2 of Ariely and Wertenbroch’s influential article entitled, “Procrastination, Deadlines, and Performance: Self-Control by Precommitment.” The original study, published in Psychological Science in 2002 (.htm), found that people performed better on a set of tasks when each task had its own externally…

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[136] Metadata Falsificada: The Cover-Up File in
Gino v. Harvard

Posted on July 3, 2026July 3, 2026 by Uri Simonsohn

Francesca Gino’s lawsuit against Harvard is still ongoing. (The trial, if it gets to that, is scheduled for December 2026) While the case drags on, both sides keep filing documents with the court, and most of those documents are publicly available (htm). This post is about a recent filing: Document #222 (pdf). (this post is…

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[118] Harvard’s Gino Report Reveals How A Dataset Was Altered

Posted on July 9, 2024May 4, 2025 by Joe Simmons

As you may know, Harvard professor Francesca Gino is suing us for defamation after (1) we alerted Harvard to evidence of fraud in four studies that she co-authored, (2) Harvard investigated and placed her on administrative leave, and (3) we summarized the evidence in four blog posts. As part of their investigation, Harvard wrote a…

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[117] The Impersonator: The Fake Data Were Coming From Inside the Lab

Posted on June 12, 2024June 13, 2024 by Uri Simonsohn

A previous version of this post was supposed to go live in January 2019. But the day before it was scheduled, the Data Colada team (Uri, Leif, and Joe) received an email that we took to be a potential death threat. After discussions with the local police, the FBI, and our families, we decided to…

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[114] Exhibits 3, 4, and 5

Posted on September 16, 2023November 14, 2023 by Uri, Joe, & Leif

We recently presented evidence of data tampering in four retracted papers co-authored by Harvard Business School professor Francesca Gino. She is now suing the three of us (and Harvard University). Gino’s lawsuit (.htm), like many lawsuits, contains a number of Exhibits that present information relevant to the case. For example, the lawsuit contains some Exhibits…

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[112] Data Falsificada (Part 4): “Forgetting The Words”

Posted on June 30, 2023June 30, 2023 by Uri, Joe, & Leif

This is the last post in a four-part series detailing evidence of fraud in four academic papers co-authored by Harvard Business School Professor Francesca Gino. It is worth reiterating two things. First, to the best of our knowledge, none of Gino’s co-authors carried out or assisted with the data collection for the studies in this…

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[111] Data Falsificada (Part 3): “The Cheaters Are Out of Order”

Posted on June 23, 2023June 23, 2023 by Uri, Joe, & Leif

This is the third in a four-part series of posts detailing evidence of fraud in four academic papers co-authored by Harvard Business School Professor Francesca Gino. It is worth reiterating that to the best of our knowledge, none of Gino’s co-authors carried out or assisted with the data collection for the studies in this series….

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[110] Data Falsificada (Part 2): “My Class Year Is Harvard”

Posted on June 20, 2023June 20, 2023 by Uri, Joe, & Leif

This is the second in a four-part series of posts detailing evidence of fraud in four academic papers co-authored by Harvard Business School Professor Francesca Gino. It is worth reiterating that to the best of our knowledge, none of Gino’s co-authors carried out or assisted with the data collection for the studies in this series….

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[109] Data Falsificada (Part 1): “Clusterfake”

Posted on June 17, 2023June 17, 2023 by Uri, Joe, & Leif

This is the introduction to a four-part series of posts detailing evidence of fraud in four academic papers co-authored by Harvard Business School Professor Francesca Gino. In 2021, we and a team of anonymous researchers examined a number of studies co-authored by Gino, because we had concerns that they contained fraudulent data. We discovered evidence…

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Recent Posts

  • [139] Artificial Deadlines (Part 2):
    Retrograding Ariely & Wertenbroch (2002)
  • [138] Artificial Deadlines (Part 1): Evidence of Fraud in an Influential Study About Procrastination
  • [137] OSF Will Stop Accepting Your Research Files, You Can Use ResearchBox Instead
  • [136] Metadata Falsificada: The Cover-Up File in
    Gino v. Harvard
  • [134] Figuring Out Figure 1

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Posts on similar topics

Fake data
  • [139] Artificial Deadlines (Part 2):
    Retrograding Ariely & Wertenbroch (2002)
  • [138] Artificial Deadlines (Part 1): Evidence of Fraud in an Influential Study About Procrastination
  • [136] Metadata Falsificada: The Cover-Up File in
    Gino v. Harvard
  • [118] Harvard’s Gino Report Reveals How A Dataset Was Altered
  • [117] The Impersonator: The Fake Data Were Coming From Inside the Lab
  • [114] Exhibits 3, 4, and 5
  • [112] Data Falsificada (Part 4): “Forgetting The Words”
  • [111] Data Falsificada (Part 3): “The Cheaters Are Out of Order”
  • [110] Data Falsificada (Part 2): “My Class Year Is Harvard”
  • [109] Data Falsificada (Part 1): “Clusterfake”

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© 2021, Uri Simonsohn, Leif Nelson, and Joseph Simmons. For permission to reprint individual blog posts on DataColada please contact us via email..