The scienceSkill Tree Architecture
The Science of Skill Trees in Coaching

Why growth needs a map, not a menu

Walnut organises coaching around 21 specific, sequenced skills — not vague conversations. Each skill is unlocked by demonstrated mastery, creating a visible growth path grounded in six decades of learning science.

21
skills on the path
3
levels: Foundation, Core, Advanced
4
steps per skill, signed off by your coach
The Tree

Your skill tree — unlocked by mastery, not by time

You work on one skill at a time. Each skill has four steps: Baseline, Mid-skill, Mastery and Sign-off by your coach.

Foundation
Foundation
Self-awareness
Emotional regulation
Active listening
Focus & follow-through
Core
Mindful communication
Conflict navigation
Collaboration
Decision making
Advanced
Feedback handling
Assertive expression
Problem solving
Resilience
Advanced Mastery Skills
MasteredIn progressLocked
Three levels
Foundation

Foundation

Where most people start: knowing yourself, staying steady, listening well and following through.

Self-awarenessEmotional regulationActive listeningFocus and follow-through
Core

Core

Working well with others and with yourself, day to day: conversations, decisions, habits and pressure.

Empathy in actionConflict navigationMindful communicationCollaborationDecision makingHabit buildingInitiative and ownershipReflection and insightAdaptabilityMotivation maintenanceStress management
Advanced

Advanced

The harder, higher-stakes skills: solving messy problems, taking feedback, holding boundaries and speaking up.

Problem solvingPerspective takingFeedback handlingBoundary settingAssertive expressionResilience
Research Pillars
01

Mastery Learning

Bloom (1968)

Benjamin Bloom demonstrated that when students were required to master each unit before advancing, 90% achieved the same level as the top 20% in conventional classrooms. Walnut applies this principle directly: you do not move to the next skill until you have demonstrated competence in the current one.

Walnut Insight

Each skill in the tree has clear mastery criteria. Your coach verifies progress before the next skill unlocks — no skipping ahead, no gaps.

02

Self-Efficacy

Bandura (1977)

Albert Bandura showed that a person’s belief in their ability to succeed is the strongest predictor of whether they actually will. Visible evidence of progress — completed nodes, unlocked tiers — directly increases self-efficacy.

Walnut Insight

The skill tree is designed to generate visible wins early. Completing core skills builds the confidence needed to tackle harder interpersonal and performance challenges.

03

Deliberate Practice

Ericsson (1993)

Anders Ericsson established that expert performance comes not from repetition alone but from targeted, feedback-rich practice at the edge of current ability. Coaching sessions anchored to specific skills create exactly this environment.

Walnut Insight

Every coaching session maps to a skill node. Games and exercises between sessions provide the repetition; the coach provides the targeted feedback.

04

Goal Setting Theory

Locke & Latham (1990)

Decades of research by Locke and Latham show that specific, challenging goals combined with visible progress produce 62% higher attainment than vague intentions like "get better at leadership." The skill tree turns abstract growth into concrete, sequenced targets.

Walnut Insight

Each skill is a specific, measurable goal. The tree provides both the specificity and the visible progress that the research demands.

05

Zone of Proximal Development

Vygotsky (1978)

Lev Vygotsky identified that learning is most effective when the task is just beyond current ability and a more knowledgeable guide provides support. The skill tree sequences challenges so each new skill sits in the learner’s ZPD, with the coach as guide.

Walnut Insight

Skill sequencing is not arbitrary. Core skills are prerequisites for harder ones because the research shows learning collapses when you skip foundational steps.

06

Self-Determination Theory

Deci & Ryan (1985)

SDT identifies three innate psychological needs: autonomy, competence, and relatedness. When all three are met, intrinsic motivation flourishes. The skill tree satisfies each: you choose your path (autonomy), see your growth (competence), and work with a coach (relatedness).

Walnut Insight

The tree is not a rigid curriculum. Within each tier, you and your coach decide which skills to prioritise — preserving the autonomy that SDT demands.

Skill tree coaching vs. traditional coaching

What the research predicts when structure replaces ambiguity.

 
Traditional Coaching
Walnut Skill Tree
Structure
Varies by coach
21 skills in 3 levels, one at a time
Progression
Time-based
Mastery-based — you advance when ready
Visibility
Self-reported
Coach-verified, platform-tracked
Motivation
Relies on willpower
Built-in: autonomy, competence, progress
Outcome measurement
Post-programme survey
Skill delta, direct report survey, growth report
How It Works
01

The game suggests where to start

The 7-minute game suggests three starter skills. You pick one, and your coach confirms it in your first session.

02

Coach anchors sessions to skills

Every session targets a specific skill node. Conversations are structured, measurable, and tied to your growth map.

03

Your coach signs off, then you pick the next

When your coach signs off the last step, you and your coach choose the next skill together. No time-gating — only demonstrated readiness.

04

A 2-minute check after every session

Three quick work moments on the skill you just worked on. Recalling it is the practice that makes it stick, and your coach reads it before you meet again.

05

A check at every step

Baseline, Mid-skill and Mastery checks show what has changed, in scores you and your coach can both see.

06

Progress HR can see

On company programmes, HR sees each skill from the first check to the latest, and a monthly report to download and share.

Start with the game. It picks your first skill.

Seven minutes, no account needed. You'll see your working style and three skills to start with.