The Complex Dynamics of Regret: Action versus Inaction Over Time
A classic line of psychological research has long described a reversal in the nature of regret as time passes. Shortly after experiencing a negative outcome, people tend to feel stronger regret over something they did—an action they took that led to an undesirable result. However, when reflecting over a much longer timeframe, failures to act—missed opportunities or omissions—often become more prominent sources of regret.
This pattern, sometimes referred to as the “action effect,” has endured through modern replication attempts, albeit with some qualifications. For example, a large preregistered replication study in 2022 supported the temporal shift in regret across three of four tested paradigms, though with smaller effect sizes than initially reported. A 2023 field study involving 2,600 participants further reproduced the shift across different time horizons but did not find that inaction clearly dominated people’s lifetime regrets. These findings underscore that the observed pattern is a trend seen across multiple studies, not a universal rule applying to every person or every decision. Importantly, it also cautions against assuming that action is inherently wiser than restraint.
Reconciling Contradictory Findings: The Original 1994 Study
Thomas Gilovich and Victoria Husted Medvec first addressed this apparent contradiction in their seminal 1994 paper, “The temporal pattern to the experience of regret”, published in the Journal of Personality and Social Psychology. They observed that in short-term contexts, people often regretted actions—choices actively made—more than failures to act. Yet when asked about their biggest regrets over their entire lives, participants frequently cited omissions, such as not pursuing education, not repairing important relationships, or letting opportunities pass by.
Gilovich and Medvec proposed that time plays a crucial role in this shift. Regrettable actions produce concrete outcomes that are easy to replay and analyze soon after the event. Individuals can attempt to explain, repair, or learn from those completed actions. In contrast, failures to act do not have a single definitive outcome; rather, their imagined alternatives remain open and can grow more appealing with hindsight. Their 1995 review further explored multiple mechanisms behind this temporal pattern—some that diminish regret over actions as time passes and others that enhance the appeal or retrievability of missed opportunities.
Limitations of the Original Research Design
Gilovich and Medvec’s 1994 paper synthesized findings from five studies that used telephone surveys, written questionnaires, face-to-face interviews, and hypothetical scenarios. This methodological variety helped demonstrate the pattern’s robustness across different approaches. However, none of these studies tracked the same individuals and regrets longitudinally over decades. Instead, some compared imagined short-term and long-term regrets, while others asked participants to recall regrets from various life stages.
Notably, the original Study 5 asked 32 adults to consider their biggest regret involving action and inaction both over the past week and across their lives. For recent regrets, 53% identified an action as more troubling, while 47% cited inaction. For lifetime regrets, 84% pointed to inactions, with only 16% choosing actions. Although this 84-to-16 split has become widely cited, it came from a small sample and should not be treated as a population constant.
2022 Preregistered Replication: Partial Support with Nuances
In 2022, Siu Kit Yeung and Gilad Feldman revisited the research in a preregistered replication published in Collabra: Psychology. Their online sample included 988 US participants recruited through Amazon Mechanical Turk. They replicated four of the original studies simultaneously with randomized display orders.
Studies 1, 3, and 4 supported the temporal pattern: participants expressed relatively more regret toward actions in the short term and toward inactions over the long term. However, effect sizes were generally smaller than in 1994. Study 5, which focused on personal recent and lifetime regrets, did not replicate the original findings convincingly. The split between regretted actions and inactions barely shifted across time horizons, suggesting that personal autobiographical regret may not follow the same pattern as hypothetical or generalized scenarios.
The authors concluded that while the overall evidence supports a temporal pattern in regret, the complexity of real-life personal regrets requires further investigation. This nuanced outcome highlights the importance of going beyond simple “replicated” or “failed” labels in psychological research.
2023 Field Study: Large-Scale Partial Replication
Further addressing these complexities, Thomas Gilovich, Shai Davidai, and colleagues conducted a results-blind, in-principle accepted study published in Royal Society Open Science in 2023. The study analyzed regret responses from 2,600 visitors to the Griffin Museum of Science and Industry in Chicago—over 80 times the sample size of the original Study 5.
Among participants reflecting on their biggest regret from the past few days, 58% cited actions and 42% inactions. Among those considering their biggest regret over their lifetime, the split was nearly even: 51% action and 49% inaction. Although the interaction between regret type and time horizon was statistically significant—indicating that action mattered more in recent regrets than lifetime regrets—the lifetime regrets did not show a dominant preference for inactions as the original study suggested.
The researchers labeled these findings a partial replication, recovering the temporal shift but not the original’s pronounced long-term inaction majority. This large-scale study lends greater confidence to the temporal shift concept while emphasizing its complexity.
The Role of Memory in Regret’s Temporal Shift
Regret’s evolution over time may also be influenced by changes in memory structure. Ian Davison and Aidan Feeney explored regret as autobiographical memory in two studies published in Cognitive Psychology in 2008. Their samples included adults in their forties and sixties. They found that recent regrets tend to focus on specific, bounded events—for example, “I sent the wrong message” or “I took the wrong job.” In contrast, more distant regrets are often generalized themes, such as “I never learned a new skill” or “I never asked someone out.” Interestingly, these general regrets typically concern inactions.
This suggests that while recent actions can be vividly recalled as discrete episodes, long-term omissions transform into broad life themes that are easier to preserve over decades. Thus, the temporal pattern might partly reflect how memories of actions and inactions are encoded and maintained differently.
Additional research by Jack Feldman, John Miyamoto, and Elizabeth Loftus in 1999 (available here) found that people list more long-term regrets related to inaction but do not necessarily report that these regrets are more intense. This distinction between frequency of recall and emotional intensity adds another layer to understanding regret’s dynamics.
Why Regret Research Should Not Be Taken as Simple Life Advice
One common misconception is to interpret these studies as a directive to “say yes” more often or to view action as inherently better than inaction. The research does not support such simplistic conclusions. Some actions can cause irreversible harm, and not every missed opportunity would have resulted in a better outcome. Similarly, inaction can sometimes be a result of sound judgment, resource limitations, competing responsibilities, or information that was accurate at the time but forgotten later.
It is crucial to remember that regret is a retrospective emotion—it reflects how people feel looking back, not an objective measure of what would have been best. Moreover, these experiments typically asked participants which regrets were stronger or easier to recall at a single point in time. They did not continuously measure how much time or mental energy people spend dwelling on regrets throughout their entire lives.
What the research robustly shows is a relative tendency: recent regrets tend to involve actions more frequently, whereas distant regrets involve inactions more often. Whether missed opportunities dominate long-term regret and whether they cause more emotional pain depends on many factors, including the population studied, the task used, and how regret is defined.
Understanding these nuances enriches our grasp of human psychology and decision-making, highlighting the complex interplay between memory, emotion, and time.
For further detailed reading, see the original source here.
