The Psychology in GMP Manufacturing Training: Choice Overload and the Primacy Effect

 

What Psychology Can Teach Us About GMP Manufacturing Training: Choice Overload and the Primacy Effect

In GMP manufacturing, we often talk about training gaps in terms of incomplete training, overdue training, or employees who have not completed the required curriculum.

But what if the training gap is not simply about whether someone completed a training module?

What if the way we design procedures, deliver training, and introduce employees to the manufacturing environment is also influencing how people make decisions and perform?

I recently read about two psychological concepts that made me think differently about manufacturing performance: Choice Overload and the Primacy Effect.

While these concepts come from psychology and behavioral research, I believe they offer valuable lessons for GMP manufacturing, particularly when we think about operator training, SOPs, competency, human error, and quality culture.

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Choice Overload: When More Choices Make Decisions Harder

Choice Overload is the idea that when people are presented with too many choices, decisions can become more difficult.

One of the most well-known studies associated with this concept was conducted by psychologists Sheena Iyengar and Mark Lepper in 2000.

In their famous "jam study," researchers set up displays in a supermarket where shoppers could sample different varieties of jam.

In one condition, shoppers were presented with a large selection of 24 different jams.

In another condition, shoppers saw a smaller selection of 6 jams.

Interestingly, the larger selection attracted more attention. People were more likely to stop and explore the larger display.

However, when it came time to make a purchase, the smaller selection performed better.

The lesson was not necessarily that people dislike having choices. Rather, when choices become too numerous or complex, people may experience difficulty making a decision.

This concept has an interesting connection to GMP manufacturing.

Imagine an operator trying to perform a critical manufacturing task.

They may need to navigate:

• Multiple SOPs

• Work instructions

• Batch records

• Forms

• Equipment manuals

• Electronic systems

• Training documents

• Quality procedures

• Deviation processes

• Change controls

• Escalation pathways

All of these documents and systems may be individually necessary.

The problem arises when the operator has difficulty determining:

Which document applies to this situation?

Which procedure takes priority?

What should I do if the procedure doesn't match what I see?

Who should I contact?

Do I stop the process or continue?

When the correct path is not clear, complexity can increase cognitive burden and create opportunities for inconsistency.

The issue is not necessarily that the operator is unwilling to follow GMP requirements.

The issue may be that the system has created too many decisions at the moment when the operator needs clarity.

The GMP Leadership Lesson

As manufacturing leaders, we should ask ourselves:

Are we making it easy for employees to do the right thing?

A strong GMP system should not depend solely on an employee's ability to navigate complexity under pressure.

If the correct procedure is buried under layers of documentation, or if multiple documents provide overlapping or confusing instructions, we may unintentionally create conditions where errors become more likely.

This is where good process design becomes critical.

We should continuously look for opportunities to:

• Simplify procedures without compromising compliance.

• Clarify which SOP or work instruction applies.

• Eliminate unnecessary duplication.

• Improve document navigation.

• Use clear visual aids where appropriate.

• Establish clear escalation pathways.

• Provide role-specific training.

• Make critical information accessible at the point of use.

The goal is not to eliminate procedures.

The goal is to eliminate unnecessary complexity.

The best GMP systems are not necessarily the ones with the most documents.

They are the systems where employees can quickly understand what is expected, why it matters, and what to do when something goes wrong.

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The Primacy Effect: Why the First Training Experience Matters

The second concept that caught my attention was the Primacy Effect.

The Primacy Effect refers to the tendency for information presented early in a sequence to have a stronger influence on memory, perception, or judgment than information presented later.

Psychologist Solomon Asch conducted influential research on impression formation in the 1940s that helped demonstrate how the order in which information is presented can influence how people interpret subsequent information.

In simple terms:

The first information we receive can shape how we understand what comes next.

This concept has a powerful connection to GMP manufacturing.

Consider a new employee entering a manufacturing facility.

During their first days and weeks, they begin learning:

• How the process works.

• How to follow SOPs.

• How to document activities.

• How to respond to unexpected events.

• When to escalate issues.

• How to interact with QA.

• How seriously the organization treats GMP requirements.

This is where the Primacy Effect becomes particularly relevant.

The first behaviors employees observe may become the behaviors they perceive as "normal."

Imagine a new operator is formally trained on the approved procedure.

But then, during their first week on the floor, they observe an experienced employee saying:

"That's the SOP, but this is how we actually do it."

The new employee now receives two different messages.

The formal training says one thing.

The manufacturing culture demonstrates another.

Which one will have the greater influence over time?

This is where leadership becomes critical.

Employees don't learn only from training modules.

They learn from:

• What leaders tolerate.

• What experienced employees demonstrate.

• What supervisors reinforce.

• What behaviors are rewarded.

• What happens when someone raises a concern.

• How teams respond when production is behind schedule.

The first training experience is therefore about much more than technical knowledge.

It is about establishing the mental model that employees will use to understand their role.

If we want employees to understand that GMP is everyone's responsibility, that quality comes before schedule, and that speaking up is encouraged, those expectations must be established from the beginning.

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The Training Gap Is Bigger Than Training Completion

This brings me to a broader point.

In GMP manufacturing, we often measure training through completion metrics.

Is the employee trained?

Is the course complete?

Is the training record signed?

Is the curriculum current?

These metrics are important.

But they don't necessarily tell us whether the employee is competent.

Training completion tells us that someone completed a requirement.

Competency tells us that the person can perform the task correctly and consistently.

Those are not the same thing.

A person can complete an SOP training module and still struggle to apply the procedure in a real manufacturing environment.

A person can pass a knowledge assessment and still hesitate when confronted with an unexpected process condition.

A person can understand the procedure but lack confidence in escalating an issue.

This is why I believe closing GMP training gaps requires us to think beyond training completion.

We need to ask:

Does the employee understand the "why"?

Can they apply the knowledge in the real manufacturing environment?

Do they know when to stop and escalate?

Do they understand the potential impact of their actions on product quality and patients?

Are supervisors reinforcing the behaviors taught in training?

Does the manufacturing environment support the behavior we expect?

These questions move us from a training completion mindset to a capability and competency mindset.

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Building a Better GMP Training System

If we apply the lessons from Choice Overload and the Primacy Effect to GMP manufacturing, several opportunities emerge.

1. Simplify Where Possible

Employees should not have to navigate unnecessary complexity to perform a critical task correctly.

Review procedures regularly.

Identify conflicting or redundant instructions.

Clarify ownership.

Make the correct path obvious.

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2. Build Strong GMP Behaviors From Day One

The first days and weeks of an employee's experience are critical.

Onboarding should establish expectations around:

• Documentation

• Data integrity

• Escalation

• Quality ownership

• Right-first-time execution

• Safety

• Stop-work authority

These behaviors should be reinforced consistently after onboarding.

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3. Train the "Why," Not Just the "What"

Employees should understand more than what the SOP requires.

They should understand why the requirement exists.

For example:

Don't just teach an employee:

"Document the activity immediately."

Help them understand:

"Accurate, contemporaneous documentation creates a reliable record of what happened and protects product quality, patient safety, and data integrity."

Understanding the "why" creates context.

Context creates ownership.

Ownership strengthens quality culture.

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4. Reinforce Through Coaching

Training should not end when the employee completes the module.

Supervisors and managers play a critical role in reinforcing expectations on the manufacturing floor.

Coaching moments can include:

• Pre-shift discussions

• Floor observations

• Real-time feedback

• Lessons learned

• Deviation trends

• Quality alerts

• Recognition of good GMP behaviors

The goal is to make GMP part of everyday operational conversations—not something that appears only during audits.

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5. Verify Competency Through Performance

Completion is not competency.

We should evaluate whether employees can demonstrate the required behaviors in the actual work environment.

This can include:

• Direct observation

• Practical demonstrations

• Qualification assessments

• Scenario-based training

• Knowledge checks

• Effectiveness evaluations

The question should move from:

"Did they complete training?"

to:

"Can they perform the task correctly and consistently?"

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The Role of Manufacturing Leadership

Ultimately, training gaps are not always solved by adding more training.

Sometimes the answer is:

Better training.

Sometimes it is:

Simpler procedures.

Sometimes it is:

Better onboarding.

Sometimes it is:

More effective coaching.

And sometimes the problem is the system itself.

As manufacturing leaders, our responsibility is to create an environment where people can succeed.

That means designing processes that reduce unnecessary complexity, establishing the right behaviors early, reinforcing expectations consistently, and creating a culture where employees feel empowered to speak up when something doesn't look right.

The goal should be to make the right way the easy way.

When we reduce unnecessary complexity and build the right habits early, we strengthen compliance, improve right-first-time performance, reduce avoidable errors, and empower our teams to consistently deliver quality.

Because at the end of the day, GMP training is not just about completing a course.

It is about building capability, confidence, and judgment that show up when it matters most—on the manufacturing floor.

Train people to understand the "why."

Design systems that support the right behavior.

Coach for competency, not just completion.

That's how we build stronger teams, stronger processes, and a stronger culture of quality.