People Skills Training for Managers: Five Domains, What the Research Shows, and How to Build Them
Most leadership development programs treat emotional intelligence as a soft concept: something a person has or doesn't, hard to measure and harder to teach. The research says otherwise. Emotional intelligence has five well-defined domains, each with measurable outcomes and components people can learn. Organizations that take this seriously see gains in team performance, psychological safety, and retention. Organizations that don't tend to promote people for technical skill and then watch them struggle as leaders.
Below is what the research shows for each domain and what effective development looks like.
Domain 1: Self-perception
Self-perception covers emotional self-awareness, honest self-regard, and self-actualization: the ability to see where you are and move deliberately toward where you want to be.
Self-aware leaders perform better, their teams are more effective, and they're more likely to advance. Leaders who have never been asked to look honestly at themselves tend to drag their workplaces down: lower engagement, more resistance to collaboration, and habits that harden because the hierarchy shields them from accurate feedback. Most of them don't know it, which is the self-awareness gap leaders don't know they have.
Self-perception grows through reflective practice. Journaling for five minutes a day with a structured emotion vocabulary (instead of the three-word range most adults use) builds the habit of naming an internal state before acting on it. Mindfulness practices widen the gap between stimulus and response: pausing before sending a reactive email, taking a short walk when overwhelmed, breathing deliberately in a tense meeting. Professional coaching or therapy, where an experienced practitioner helps someone examine their patterns from the outside, speeds this up considerably.
Domain 2: Self-expression
Self-expression covers emotional communication, assertiveness, and independent thinking. It's the ability to turn internal awareness into language and behavior that is honest, direct, and controlled.
Assertiveness and aggression are different behaviors. Research describes assertiveness as fundamental to building and keeping positive workplace relationships, preventing harassment, and supporting safe behavior and sound decision-making (Mafra, 2021). Leaders who lack it avoid hard conversations, let problems compound, and create ambiguity that does its own damage. Leaders who overcorrect show the other side of the problem, covered in the two failure modes of anger in leadership.
Building self-expression is behavioral work. Behavioral rehearsal combined with cognitive restructuring (practicing difficult conversations in low-stakes settings, then adjusting the thinking behind why they feel threatening) produces stronger outcomes than either approach alone, as summarized in a feasibility study of assertiveness work with nurses published in BMC Nursing (Nakamura et al., 2017). Treatment studies show that assertiveness training improves self-esteem, self-concept, and internal locus of control across varied populations (Speed et al., 2018). A 2024 systematic review and meta-analysis of workplace programs in BMC Psychology found moderate, durable effects (a standardized mean difference, or SMD, of 0.46) for emotional competency training that lasted more than three months after the intervention (Mehler et al., 2024).
Domain 3: Interpersonal skills
The interpersonal domain covers relationship-building, empathy, and social responsibility: how leaders engage with others, as opposed to how they manage themselves.
Edmondson's 1999 study of 51 work teams in a manufacturing company found that psychological safety, a condition leaders create or undermine, predicts learning behavior, which in turn drives team performance. Google's Project Aristotle, which examined more than 250 team-level variables, found psychological safety was the most important factor separating high-performing teams from the rest.
The cognitive-empathy distinction matters here. A leader who can model what someone else feels well enough to predict their behavior, without caring about that person's experience, isn't showing interpersonal skill. The research measures affective empathy: engaging with another person's reality instead of modeling it for strategic use.
Empathy can be taught. A meta-analysis of 18 randomized controlled trials in the Journal of Counseling Psychology found a medium effect size (g = 0.63) for empathy training programs, with the strongest results in programs that used all four parts of behavioral skills training: instruction, modeling, practice, and feedback (Teding van Berkhout and Malouff, 2016). The most basic interpersonal skill, active listening for managers, has its own controlled-study evidence showing that even five-minute interactions change how understood, trusted, and approachable a leader seems.
Domain 4: Decision making
This domain covers how leaders use emotional information in decisions: problem solving, reality testing, and impulse control.
The neurological foundation is well established. Bechara's research in Brain and Cognition found that damage to emotional signal processing in the ventromedial prefrontal cortex, with basic cognitive function left intact, seriously impairs real-life decisions. Chronic stress causes a similar degradation, because a high neurochemical load disrupts the prefrontal structures that sound judgment depends on.
Many organizational decisions are made by people under chronic stress, and the spreadsheets that come afterward justify the outcome without improving the process. Building decision-making skill means teaching people to recognize when they're cognitively offline and to distrust their judgment in that state. That cuts against the "decisive leader" image many management cultures reward.
Mindfulness practice has strong evidence here. A randomized controlled trial published in Mindfulness found that ten minutes of daily practice over seven days improved performance on impulse-control tasks compared with both control conditions right after training, though the effect had faded by follow-up (Ge et al., 2025). The pause has to be practiced regularly to hold. Practical tools build the same pause before committing: a pre-mortem before major decisions, an assumption audit on high-stakes calls, and a structured debrief after significant outcomes.
Domain 5: Stress management
The stress management domain covers flexibility, stress tolerance, and optimism: how leaders cope with sustained pressure and change.
Two things hold at once. Individual stress management skills can be learned and they matter, and individual interventions don't touch the structural causes of burnout. The National Academy of Medicine's 2019 report on clinician burnout (National Academies of Sciences, Engineering, and Medicine, 2019) named high workloads, administrative burden, and inadequate staffing as the main drivers, yet most organizational responses focused on individual resilience instead of redesigning the system. Bakker and de Vries argue that interventions aimed at symptom control don't remove the causes of burnout, and that organizations have to redesign job demands and resources (Bakker and de Vries, 2021).
Leaders who understand this work on both levels. They manage their own physiology through breathwork, fitness, sleep, and cognitive reframing, because burned-out leaders produce burned-out teams. A clinically validated emotion regulation tool for leaders (the Check the Facts skill from dialectical behavior therapy, or DBT) gives them a structured five-step process for that individual work under pressure. And they look for the system conditions producing the stress instead of treating each person's reaction to it.
A six-week online resilience program built on cognitive reframing, optimism-building, and energy management produced significant resilience gains and lower perceived stress in a 2025 randomized study of adults aged 18 to 54, most of them university students (Leitner et al., 2025). Meta-analytic reviews find that cognitive behavioral therapy (CBT), mindfulness-based, and mixed interventions all produce measurable improvements in psychological resilience across controlled trials.
Each of these five domains responds to structured practice, repetition, and professional support. Organizations that treat emotional intelligence as a fixed trait skip the development that would change their outcomes. Organizations that build it get leaders who create high-trust environments, make sounder decisions under pressure, and keep the people worth keeping. That development should be accessible to every leader, not only the senior ones.
Kestryl Edge designs and runs leadership workshops for teams and their leaders. If you're seeing low trust, high turnover, or friction that new policies haven't fixed, the first conversation is about which of these domains is the weak link.
Want to keep building on this? Dan Korus, Kestryl Edge founder, publishes The Updraft, a weekly newsletter on leadership, trust, and how teams actually perform. Subscribe here.
References
Bakker, Arnold B., and Juriena D. de Vries. "Job Demands-Resources Theory and Self-Regulation: New Explanations and Remedies for Job Burnout." Anxiety, Stress, & Coping 34, no. 1 (2021): 1-21. https://doi.org/10.1080/10615806.2020.1797695
Bechara, Antoine. "The Role of Emotion in Decision-Making: Evidence from Neurological Patients with Orbitofrontal Damage." Brain and Cognition 55, no. 1 (2004): 30-40. https://doi.org/10.1016/j.bandc.2003.04.001
Edmondson, Amy C. "Psychological Safety and Learning Behavior in Work Teams." Administrative Science Quarterly 44, no. 2 (1999): 350-383. https://doi.org/10.2307/2666999
Ge, Chunlei, Yuhong Xie, Meijuan Sun, Fanfan Fan, Yiemin Zhang, and Lei Liu. "Brief Online Training in Mindfulness Meditation Momentarily Reduces Some Impulsive Behaviors: A Randomized Controlled Trial." Mindfulness 16, no. 2 (2025): 448-464. https://doi.org/10.1007/s12671-024-02479-3
Leitner, Manuel, Andreas Fink, Viktoria Fruhwirth, Stefanie Hechenberger, Christian Enzinger, and Daniela Pinter. "Navigating Life's Challenges: A Randomized 6-Week Online Intervention Study to Enhance Resilience in Working-Age Adults." Applied Psychology: Health and Well-Being 17, no. 2 (2025): e70023. https://doi.org/10.1111/aphw.70023
Mafra, Andréia Nunes. "Assertiveness and Its Applications in Nursing Practice." Enfermagem em Foco 12, no. 3 (2021). https://doi.org/10.21675/2357-707X.2021.v12.n3.4479
Mehler, Miriam, Elisabeth Balint, Maria Gralla, Tim Pößnecker, Michael Gast, Michael Hölzer, Markus Kösters, and Harald Gündel. "Training Emotional Competencies at the Workplace: A Systematic Review and Metaanalysis." BMC Psychology 12 (2024): 718. https://doi.org/10.1186/s40359-024-02198-3
Nakamura, Yohei, Naoki Yoshinaga, Hiroki Tanoue, et al. "Development and Evaluation of a Modified Brief Assertiveness Training for Nurses in the Workplace: A Single-Group Feasibility Study." BMC Nursing 16 (2017): 29. https://doi.org/10.1186/s12912-017-0224-4
National Academies of Sciences, Engineering, and Medicine. Taking Action Against Clinician Burnout: A Systems Approach to Professional Well-Being. Washington, DC: The National Academies Press, 2019. https://doi.org/10.17226/25521
Speed, Brittany C., Barry A. Goldstein, and Michael R. Namm. "Assertiveness Training: A Forgotten Evidence-Based Treatment." Clinical Psychology: Science and Practice 25, no. 1 (2018): e12216. https://doi.org/10.1111/cpsp.12216
Teding van Berkhout, Emily, and John M. Malouff. "The Efficacy of Empathy Training: A Meta-Analysis of Randomized Controlled Trials." Journal of Counseling Psychology 63, no. 1 (2016): 32-41. https://doi.org/10.1037/cou0000093