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Why Training Rarely Changes Behaviour — And What Actually Works

The problem is not the content. It is the format. What learning neuroscience tells us about what genuinely shifts behaviour — and why nothing has changed by Monday morning.

Samuel Schaller May 2026 8 min read

Corporate training represents billions of euros invested every year. And yet the question that surfaces in every HR leadership team remains the same: how do we make it actually change something?

I spent a decade in large international organisations. I sat through training programmes — full days, slides, frameworks. And on Monday morning, nothing had changed: not in me, not around me. This was not a question of willingness. The content was often sound. The format was structurally incapable of producing lasting behaviour change.

80% of what we learn is forgotten within a week without reactivation (Ebbinghaus forgetting curve)
better retention with active practice and immediate feedback versus passive instruction

What neuroscience tells us about learning

The human brain is not designed to memorise and apply information received passively. This is a documented neuroscientific reality, established since Ebbinghaus's work in the late nineteenth century and considerably refined since.

The forgetting curve

Without reactivation, we forget approximately 50% of what we have learnt within 24 hours, and 80% within a week. A full-day training programme where participants remain passive leaves virtually no behavioural trace within a fortnight. This is mechanical — not a motivation issue.

What creates lasting change

Learning neuroscience converges on several points:

It is not the content that transforms a team. It is the experience you put them through.
Samuel Schaller — Schaller Consulting

What this means in practice

What does not work

  • Two-hour trainer monologue
  • Slides dense with content
  • Passive participants taking notes
  • Theoretical exercises disconnected from real work
  • Post-training evaluation at day zero only
  • No follow-up after the session

What anchors behaviour

  • Immersive practice from the first minutes
  • Alternating practice and structured debrief
  • Scenarios drawn from real situations
  • Immediate feedback from the group and facilitator
  • Reactivation milestones at 30 and 90 days
  • Individual and collective action plan
Participants actively engaged in a training workshop
Effective behavioural training places participants in action from the very first minutes — not after two hours of theory.

The catalogue paradox

Most corporate training is purchased off a catalogue. An HR director identifies a need, finds a matching module, commissions a standardised programme. It is fast, predictable and easy to budget.

It is also the surest way to spend money on nothing. A behaviour changes in a specific context, facing specific obstacles, in specific situations. A generic programme on "communication skills" cannot address the real challenge facing a manager who needs to deliver difficult feedback to a brilliant but fragile team member in their specific organisation.

The catalogue problem: these programmes are designed to be sold to everyone — which means they are optimised to challenge nobody, disrupt nobody, and genuinely change nobody.

What effective behavioural training requires

This diagnosis is what shaped how I work: starting from the real context, designing bespoke programmes, and measuring impact on actual behaviours — not just day-zero satisfaction scores. Let's talk about your challenge.

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