Most of us were taught to think of resilience as a trait, like being left-handed or good under pressure. You either had it, or you didn’t. The Ego Resilience Scale (ER-89), developed in the 1990s, reflected that thinking. It measured personality traits like adaptability and optimism, offering researchers a snapshot of someone’s typical strengths.
But here’s the catch: traits (like those measured by the Ego Resilience Scale) don’t always translate to capacity, especially not under pressure.
Coaches and psychologists know this intuitively. When clients walk into a session overwhelmed, exhausted, or on the edge of burnout, they bring today’s reality, not their baseline personality. Yet many of the tools we’ve inherited still treat resilience as static—as if it lives in a vacuum, untouched by time, stress, or context.
That’s not how resilience works.
We now understand resilience as a dynamic system shaped by the brain, the body, and the environments we move through. It fluctuates with sleep, bends under chronic stress, and depends on more than mindset.
In this post, we’ll explore why tools like the ER-89, while valuable in certain contexts, aren’t built for real-world coaching and development, and how the Personal Resilience Indicator (PRI) fills the gap with a system-based, actionable approach.
Table Of Contents:
- From Trait to Tool: The Origins of the Ego Resilience Scale (ER-89)
- Why Trait Measures Alone Don’t Cut It Anymore
- Where the PRI Comes In: From Insight to Intervention
- Beyond the Score: What These Tools Really Measure
- Paul’s Story: When a “High Resilience” Score Hits You in the Gut
- The Bottom Line
- Want to Use the PRI With Your Clients?
- FAQs
- References
From Trait to Tool: The Origins of the Ego Resilience Scale (ER-89)
The Ego Resilience Scale (or short: ER-89) was developed to answer a clear research question: what makes some people more adaptable than others? Block and Kremen weren’t studying trauma recovery or chronic stress. They were exploring long-term patterns of self-regulation—what they called ego-resiliency.
To measure it, they created a 14-item self-report scale, with positively framed statements like “I believe in myself” and “I can usually find a way to handle it.” There was no time frame. No reference to current context. Just a general reflection of how someone typically sees themselves.
And for its intended purpose, it worked. The ER-89 has shown acceptable (though not great) internal consistency (Cronbach’s alpha = 0.76) and continues to be used in personality research today.
But when it comes to personal development, be it in the context of coaching, therapy or leadership development, its limits become clear.
Because the items are all positively phrased, the ER-89 is vulnerable to response bias: the unconscious tendency to agree with statements that sound socially desirable. A client might score as highly resilient, not because they’re coping well today, but because they believe they should be.
That’s not a design flaw. It’s a design choice rooted in an earlier era of resilience science. But it means the ER-89 often misses what matters most: what’s under strain right now.
Why Trait Measures Alone Don’t Cut It Anymore
Since the ER-89’s conception, resilience research has expanded in every direction. It’s no longer seen as a fixed trait. It’s a living system, constantly responding to internal and external pressures.
Resilience isn’t fixed. It fluctuates.
Mood, sleep, pain, context—all of these influence resilience in real time. Someone might have strong traits, but their functional capacity drops if they’re physically depleted or emotionally overloaded. Trait tools miss this.
It’s not just internal. It’s relational.
We now know resilience is shaped by relationships, culture, and context—not just grit or self-control. Whether someone recovers or spirals often depends on the support around them. That’s hard to measure with traits alone.
It’s not one thing. It’s many things working together.
Resilience includes emotional agility, problem-solving, energy management, connection, and more. Some newer tools began to reflect this complexity, but few go deep enough to support intervention.
It lives in the body as much as the mind.
Chronic inflammation, poor sleep, and nervous system overload all weaken resilience. You can’t mindset your way out of physiological depletion. This is why tracking systems, not just thoughts, matters.
Where the PRI Comes In: From Insight to Intervention
Most resilience tools stop at description. The Personal Resilience Indicator (PRI) was built to do more than describe.
It was designed to answer the practical questions coaches, psychologists, and development professionals ask every day:
- Where is my client coping and where are they compensating?
- Which systems are under strain?
- What can we do right now that will make a difference?
Rather than relying on a single score or a loose cluster of traits, the PRI breaks resilience down into twelve protective drivers, grouped across six core domains. These include Purpose, Problem-solving, Perseverance, Composure, Relationships, and critically, Health. Each domain’s two drivers reflects a distinct, trainable aspect of resilience, from sleep quality and lifestyle habits to emotional agility and cognitive flexibility.
That structure matters. It means you’re not just learning whether someone is struggling; you’re seeing where. A low score in Sleep or Lifestyle signals a depleted system, even if Purpose or Relationships are still strong. A client might appear emotionally steady on the surface, but the PRI can reveal when that steadiness is coming at a cost, propped up by internal pressure or unsustainable routines.
One certified PRI Practitioner described working with a senior leader who came across as confident, upbeat, and fully engaged. But the PRI told a different story. His Health driver scores for Sleep and Lifestyle Routines were close to zero. His system was running on adrenaline. Emotional Agility had collapsed, and he began withdrawing from key relationships. On paper, he looked resilient. In practice, he was running on fumes. What changed the trajectory wasn’t the awareness alone; it was the combination of a structured debrief, a targeted intervention plan tailored to his results, and permitting himself to prioritise rest as a form of responsibility, not weakness.
The PRI also avoids the trap of generic feedback. It doesn’t label someone as “developing” or “high functioning” without context. Instead, it delivers a nuanced picture, rooted in how the brain and body actually adapt to stress, and anchors the data in a structured debrief. That debrief isn’t an add-on. It’s where the insight becomes usable. Coaches trained in the PRI methodology guide clients through the results, helping them identify their first point of leverage, i.e. the “first domino.”
Sometimes, that starts with sleep, sometimes with re-learning how to calm one’s nervous system in the heat of the moment, and sometimes with helping someone realise they’re not broken, but they’re overloaded.
This is where the PRI opens up a different kind of conversation. One that doesn’t start with “Are you resilient?” but instead asks, “What’s working? What’s under pressure? And where can we start today?”
Beyond the Score: What These Tools Really Measure
When comparing resilience tools, the total score is only part of the story. What really matters is how that score is constructed, what it reflects, and how it can be used in practice.
The ER-89 offers a single global score, drawn from 14 positively phrased items. It was designed to reflect ego-resiliency as a stable personality trait that captures general tendencies like optimism, flexibility, and emotional self-regulation. In its original validation study, the ER-89 showed a Cronbach’s alpha of 0.76, which is acceptable, but not exceptional. The scale continues to hold value in personality research and studies exploring broad, long-term patterns of adaptation.
But when it comes to personal development (such as coaching, training, leadership development) that kind of trait-level snapshot can fall short. The ER-89 offers no breakdown by domain, no insight into which specific systems are strained, and no guidance on where to intervene. It gives you a number, but not a starting point.
The PRI was built to provide that next step.
Its structure reflects a systems view of resilience informed by decades of interdisciplinary research. With 64 items grouped across six domains and twelve protective drivers, the PRI provides a multidimensional resilience profile. It captures not just who someone tends to be, but how their system is functioning now.
Technically, the PRI shows excellent internal consistency, with a Cronbach’s alpha of 0.94 for the overall scale and strong values across individual domains. But more importantly, it translates structure into strategy. Low scores in Composure or Sleep don’t just describe a state, they suggest a direction. This is what makes the PRI workable in real time: the ability to see what’s holding, what’s faltering, and what can be supported next.
That’s the key difference. The ER-89 was designed to describe. The PRI was designed to support change.
Here’s how the two tools compare across the metrics that matter most, i.e. structure, reliability, and real-world application.
| Name | Ego Resiliency Scale (ER-89) | Personal Resilience Indicator (PRI) |
| Basic Information | ||
| Year of Publication | 1996 | 2021 |
| Validation Population | Young adults | Working professionals |
| Availability | Publicly available
(non-commercial research use) | Licensed (pay-per-use) Certification training |
| Structure and Properties | ||
| Time Frame for Responses | None specified | 4 weeks |
| Phrasing of Items | All positively phrased | Both |
| Response Scale | 4-point Likert (1 = does not apply at all to 4 = applies very strongly) | 5-point Likert (1 = not at all like me to 5 = very much like me) |
| Number of Items | 14 | 64 |
| Number of Domains | 1 (unidimensional) | 6 |
| Number of Subdomains | None | 12 |
| Internal Consistency | α = 0.76 | α = 0.94 |
| Output | ||
| Scoring | Overall score only | Overall, domain and driver scores |
| Normalisation | No | Yes (stable population sample) |
| Graphical Output | None | Stacked sunburst chart and summary scales |
| Client Report | No | Detailed report with domain and driver-level insights |
Paul’s Story: When a “High Resilience” Score Hits You in the Gut
Paul’s shares:
“When I saw the score (43, high resilience) my first reaction was simple:
Bullshit.
Not because I don’t believe in the ER-89. I do. I know it’s a valid scale. It measures trait resilience—how adaptable, open, and self-regulated you are across time. And I’ve spent years building that. I’ve clawed my way through addiction, PTSD, the military, Gabor’s training… I’ve got grit. I’ve got tools.
But when I took that test, I was four months into a spiral I couldn’t stop.
I hadn’t slept through the night in weeks. My shoulder felt like it was being carved open with a blunt knife. I was cancelling clients, losing words mid-sentence, drifting through the day and then falling apart at night. The ER-89 told me I was doing great.
And all I could think was: If this is resilience, I don’t want it.
That’s the trouble with trait-based tools. They look at your scaffolding. But they don’t tell you if the beams are cracking.
What I needed in that moment wasn’t a personality readout. I needed a roadmap. I needed someone to look at me—tired, in pain, snapping at people I love—and say, You’re not weak. You’re depleted. And here’s where to start.
The ER-89 couldn’t do that. It wasn’t designed to. But it still stung.
Because there’s something gutting about a test saying, You should be coping when you’re barely getting through the day.”
I remember Paul handing me the result. One eyebrow raised. No words—just the score.
We both knew it wasn’t wrong. But it was irrelevant.
So many tools in the resilience space are like that. Scientifically sound, well-intentioned and completely mismatched to what’s needed in moments of real struggle. They tell you who you are—not how you are.
That’s where the PRI changed everything.
Paul’s overall score came in at 13%. Health? 1%. Emotional Agility? 2%. It didn’t sugar-coat it. It showed exactly how far things had slid. However, it also showed where he still had capacity: Creative Insight at 79%. That became the anchor. The one intact driver he could build from.
When you’re in pain, a high trait score doesn’t help. It’s not about potential—it’s about capacity. And at that moment, Paul didn’t need to be reminded who he’d been. He needed help remembering who he could become again.
The Bottom Line
- The ER-89 shows who you are. The PRI shows what you can change.
- The ER-89 gives a score. The PRI maps a system.
- The ER-89 describes. The PRI guides.
Want to Use the PRI With Your Clients?
Book a free 20-minute strategy session with Paul or Nadine to explore how to bring the PRI into your client practice and whether certification is right for you.
FAQs
How long does it take to complete the PRI?
Most clients complete the PRI in around 20–25 minutes. It’s long enough to offer meaningful depth, but short enough to fit into a busy day. We often hear that the experience of answering the questions sparks immediate reflection even before the debrief begins.
Can the PRI track change over time?
Yes, and that’s one of the biggest advantages of using it. Unlike trait-based tools, the PRI is designed to reflect real-time system strain and capacity. That means you can use it at key points in a programme, leadership journey, or recovery process to track what’s actually changing beneath the surface before the change is even visible on the outside.
Is the PRI grounded in neuroscience or just another generic self-report measure?
The PRI is a self-report resilience measure but it’s grounded in a neuropsychobiological model of resilience, built on over 30 years of research into how the brain and body adapt under pressure. Each of its six domains and twelve drivers maps onto real systems (cognitive, emotional, and physiological) that shape how people respond, recover, and grow. And it’s not static. The PRI is continuously refined to reflect the latest research, so the tool evolves as the science does.
References
Alessandri, G., Vecchione, M., Caprara, G., & Letzring, T. D. (2012). The ego resiliency scale revised. European Journal of Psychological Assessment, 28(2), 139–146. https://doi.org/10.1027/1015-5759/a000102
Block, J., & Kremen, A. M. (1996). IQ and ego-resiliency: Conceptual and empirical connections and separateness. Journal of Personality and Social Psychology, 70(2), 349–361. https://doi.org/10.1037//0022-3514.70.2.349
Denovan, A., Dagnall, N., & Drinkwater, K. (2022). The Ego Resiliency Scale-Revised: Confirmatory factor analysis and Rasch models. Journal of Psychoeducational Assessment, 40(6), 707–721. https://doi.org/10.1177/07342829221090117
Sinclair, N., Hafner, G., & Sinclair, P. D. (in submission). Development and validation of the Personal Resilience Indicator (PRI) scale for personal development and organizational application. Mind Matters Ltd.
Taylor, Z. E., Eisenberg, N., VanSchyndel, S. K., Eggum-Wilkens, N. D., & Spinrad, T. L. (2014). Children’s negative emotions and ego-resiliency: Longitudinal relations with social competence. Emotion, 14(2), 397–406. https://doi.org/10.1037/a0035079
Taylor, Z. E., & Spinrad, T. L. (2017). Developmental tools that build social and emotional competence in school: A focus on effortful control and ego-resiliency. In M. A. Warren & S. I. Donaldson (Eds.), Toward a positive psychology of relationships: New directions in theory and research (pp. 119–144). Praeger/ABC-CLIO.
Vecchio, G. M., Barcaccia, B., Raciti, P., Vivaldi, P., & Milioni, M. (2019). Validation of the Revised Ego-Resiliency Scale in a high-vulnerable Colombian population. Universitas Psychologica, 18(3), 1–13. https://doi.org/10.11144/Javeriana.upsy18-3.vrer
Windle, G., Bennett, K. M., & Noyes, J. (2011). A methodological review of resilience measurement scales. Health and Quality of Life Outcomes, 9(1), 8. https://doi.org/10.1186/1477-7525-9-8
