The Rise and Fall of the Power Pose
“Stand like a superhero for two minutes before a job interview, and your body chemistry shifts to make you braver.” This was the compelling promise at the heart of one of TED’s most-watched talks, delivered by social psychologist Amy Cuddy in 2012. The idea captured imaginations worldwide: a simple, two-minute ritual anyone could perform in front of a mirror to boost confidence and hormonal balance before a stressful event. Yet, beneath the viral appeal lay a shaky foundation. Subsequent research failed to replicate the hormonal effects, and the original lead scientist publicly recanted the core claims. This article explores how a captivating scientific finding traveled far beyond its evidence, the lessons it offers about scientific rigor, and what remains valuable in the story.
A quick note: We are writers and journalists, not psychologists or endocrinologists, and this piece is a reading of how one finding travelled, not advice about your own confidence or biology. The studies here are small and contested, and population-level results are not instructions for any individual reader.
The Viral Claim That Captured Millions
By 2017, Amy Cuddy’s TED talk, “Your body language shapes who you are”, had been viewed over 39 million times—a figure that has since surged past 70 million. The talk distilled a complex psychological concept into an accessible, actionable tip: holding an expansive “power pose” for two minutes elevates testosterone, reduces cortisol (the stress hormone), and increases risk-taking behavior, thereby making people feel more powerful and confident.
This narrative was rooted in a 2010 study by Dana Carney, Amy Cuddy, and Andy Yap, published with just 42 participants. Their results suggested that adopting “high-power” poses could produce measurable hormonal changes and behavioral shifts. The simplicity of the message appealed broadly—many people could relate to the instinctive feeling of standing taller to face a challenge. The TED platform amplified this message globally, embedding the idea in popular culture as a quick confidence hack.
Scientific Scrutiny and the Breakdown of the Hormone Story
However, the initial excitement was met with skepticism as larger, more rigorous studies emerged. Starting in 2015, several replication attempts failed to find the hormonal effects originally reported. One of the most significant replication studies, led by Eva Ranehill and colleagues at the University of Zurich, tested 200 participants (nearly five times the original sample size). Their results confirmed that while participants might feel more powerful, there were no detectable changes in testosterone, cortisol, or risk-taking behavior.
Further investigations, including an entire journal issue dedicated to power posing research, consistently found little to no effect on hormones or behavior. This growing body of evidence challenged the biological foundation of the power pose claim.
In a rare and commendable move, Dana Carney, the study’s original lead author, publicly disavowed the hormonal claims in 2016. She stated clearly, “I do not have any faith in the embodied effects of ‘power poses.’” This admission also led her to remove power posing from her teaching curriculum, highlighting the rarity and integrity of such a public scientific correction.
What Remains: Feeling Powerful vs. Hormonal Change
Despite the collapse of the hormone story, not all aspects of the power pose hypothesis were disproven. Consistently, research has shown that people who adopt expansive, open postures report feeling more powerful afterward. This subjective sense of power appears to be a reliable effect, and Amy Cuddy has continued to defend this narrower, psychological claim.
In a 2017 Q&A, Cuddy emphasized that “the key finding is simple: adopting expansive postures causes people to feel more powerful.” Unlike the earlier hormonal claims, this is a statement about subjective experience, which is easier to measure and replicate.
Regarding biological effects, Cuddy has acknowledged the mixed evidence and adopted a more cautious stance: “I am currently agnostic about how posture affects hormones.” She also moved away from the superhero metaphor, describing power posing as more about “carrying yourself with power and pride and poise, as you deserve to do.” This reframing aligns the message with motivation and self-perception rather than hard biology.
The Replication Crisis and the Journey of a Scientific Claim
The rise and fall of power posing is emblematic of the broader replication crisis in psychology and science at large. Early findings from small samples often fail to hold up under larger, more rigorous studies. Small studies can produce false positives or findings driven by random noise rather than true effects. Yet, once a finding gains public traction, undoing misconceptions is challenging.
A notable point of contention is that replication studies often differ in methodology; for example, the failed replication by Ranehill et al. involved participants holding poses for six minutes instead of two, which Amy Cuddy has argued complicates direct comparisons. Importantly, this debate does not imply misconduct but illustrates the complexities of behavioral research.
While the TED talk has been viewed tens of millions of times worldwide, the corrective statements and scientific caveats have reached only a fraction of that audience. This disparity highlights a key challenge in science communication: sensational findings travel fast, but nuanced corrections often lag behind.
Ultimately, the story of power posing underscores the importance of scientific transparency, rigorous replication, and critical thinking. It reminds us that confidence and self-perception are complex phenomena not easily distilled into simple rituals or quick fixes. Feeling powerful may indeed start with posture, but the biological underpinnings remain uncertain.
For those interested in a deeper dive into this topic, including detailed studies and expert commentary, see the full exploration Here.
