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  1. Clearer Thinking with Spencer Greenberg
  2. Can averages explain a human life? (with Steven C. Hayes)
Can averages explain a human life? (with Steven C. Hayes)

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg · Mar 19, 2026

Psychology's reliance on population averages is a statistical error. ACT creator Steven C. Hayes explains why individual journeys defy the bell curve.

The Utility of a Psychological Trait Like "Openness" Is Entirely Context-Dependent

A trait like emotional openness, generally seen as positive, is detrimental for a first responder during a crisis. However, suppressing it at home is also harmful. Desirable psychological skills are not universal virtues but tools to be deployed flexibly depending on the situation.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Acceptance and Commitment Therapy (ACT) Prioritizes Being Open, Aware, and Engaged

ACT, a major therapeutic approach, doesn't focus on fixing disorders but on developing core skills: emotional/cognitive openness, purposeful awareness, and active engagement with one's values, all while considering physical and social well-being.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Attempting to Eliminate a Negative Thought Can Paradoxically Reinforce It

Traditional CBT often involves challenging irrational thoughts. However, the very act of checking to see if a thought is gone requires you to think it again. ACT instead suggests adding new, useful thoughts rather than trying to remove old, unhelpful ones.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

You Are Not Your Life Story; You Are the Storyteller

An ACT exercise involves rewriting your life story using the same facts but different interpretations. The goal is to realize that you are the one *story-ing*. This frees you from being a prisoner of a single narrative and empowers you to choose your next action based on your values.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Designing for the "Average User" Often Results in a Product That Fits No One

The classic case of military jet crashes reveals a critical design flaw: cockpits were built for the "average" pilot. Out of 4,000 pilots, none fit the average on ten key dimensions. This illustrates how designing for an abstract average can fail everyone in practice.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Many Common Statistical Tools Originated From Eugenicist Research

Core statistical methods like Pearson's R and standard deviation were developed by prominent eugenicists. This isn't to say using them is wrong, but it highlights the historical context: these tools were designed to categorize and rank people based on decontextualized, between-person differences.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Most Psychological Research Is Flawed Due to the "Ergodicity Error"

Psychological science often mistakenly assumes that group averages can predict an individual's development over time. This statistical error, known as violating ergodicity, means many common psychological concepts and traits don't accurately describe any single person's life journey.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

The Big Five Personality Model Fails to Characterize Two-Thirds of Individuals Over Time

The widely used Big Five personality model is a statistical artifact of group averaging. When individuals are studied over time and across situations, fewer than one-third can be accurately categorized by the model, revealing its limitations in describing individual lives.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Early Diagnostic Labels Based on Statistical Norms Can Be Profoundly Misleading

The speaker's son was diagnosed with a genetic disorder for being below the first percentile in strength. Despite dire predictions, personalized coaching and effort allowed him to overcome this, eventually earning two black belts. This shows how statistical labels can fail to predict individual potential.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

"Thought Defusion" Techniques Weaken a Negative Thought's Power Over Behavior

Defusion is the practice of separating thoughts from their automatic emotional and behavioral influence. Techniques like saying a thought slowly, singing it, or imagining your younger self saying it can reduce its power. This allows you to *have* thoughts without letting your thoughts *have* you.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Psychological Therapies Are No More Effective Today Than 40 Years Ago

For the last 40 years, no mental health disorders have been truly "solved" (i.e., we know their origin and cure). Meta-analyses show that the effectiveness of interventions like CBT has not progressively improved over time, suggesting the underlying research paradigm based on group averages is at a dead end.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago

Systematically Tracking Your Own Experience Yields More Insight Than Psychology Books

Instead of relying on generalized psychological concepts, track your own life. Identify what lifts you up and pushes you down, monitor it daily, and analyze the patterns. This personalized, systematic self-study can yield more useful insights than group-based research which often doesn't apply to individuals.

Can averages explain a human life? (with Steven C. Hayes) thumbnail

Can averages explain a human life? (with Steven C. Hayes)

Clearer Thinking with Spencer Greenberg·a month ago