Why we forget what we learn: 7 proven ways to improve learning retention

You finish a training course feeling confident, motivated and full of new ideas. Three weeks later, someone asks you to explain what you learned, and you struggle to remember the details.

Sound familiar?

Perhaps you attended a leadership workshop and promised yourself you'd use the techniques.

Or completed a compliance course, passed the assessment and downloaded your certificate.

Maybe you watched a webinar that seemed genuinely useful at the time.

But weeks later, much of the information feels distant.

You remember attending.

You remember finding it interesting.

You might even remember the presenter.

But the actual learning?

That's harder to retrieve.

This is a familiar challenge in professional development.

And it raises an important question.

If we spend time and money learning new things, why do we forget so much of what we've learned?

The answer lies partly in how human memory works and partly in how we design learning experiences.

The good news is that several well-established learning techniques can help improve retention.

In this guide, we'll explore the science of forgetting, the difference between recognising and remembering information, seven evidence-informed strategies for strengthening learning and how your continuing professional development (CPD) record can support the process.

Why do we forget what we've learned?

Forgetting is a normal part of human memory.

When we encounter new information, we don't automatically store every detail in a form that can be recalled indefinitely.

What we remember depends on several factors, including:

• How well we understood the information initially.
• Whether it connected with existing knowledge.
• How much attention we gave it.
• Whether we revisited the material.
• Whether we practised retrieving it.
• Whether we applied it.
• How much time has passed.
• The conditions under which we try to remember it.

Learning something once does not guarantee that we'll be able to retrieve it accurately months later.

This matters in the workplace because training is often delivered as a one-off event.

An employee attends a workshop.

Completes an online module.

Passes a short assessment.

And returns to their normal responsibilities.

But if the information isn't revisited, retrieved or applied, some of it may become harder to remember.

What is the forgetting curve?

The forgetting curve is a concept associated with the psychologist Hermann Ebbinghaus, who investigated how memory changes over time.

His work demonstrated that recall can decline after learning, particularly without further review or reinforcement.

The concept is often illustrated as a curve showing a relatively rapid initial decline followed by a slower reduction in recall.

However, the precise shape of forgetting varies depending on the learner, material and learning conditions.

Popular claims that everyone forgets a fixed percentage of information within a particular number of days oversimplify the research.

What the forgetting curve means for workplace learning

Imagine an employee attends a two-hour training session.

They understand the material and pass an assessment immediately afterwards.

If they never revisit or use that knowledge, their ability to recall certain details may decline.

But if they practise retrieving the information, revisit important concepts and apply them in relevant situations, they may retain it more effectively.

The practical lesson is straightforward:

Learning should not necessarily end when the training session finishes.

Why traditional workplace training can struggle with retention

Many workplace learning programmes focus on delivery and completion.

Organisations measure:

• Course attendance.
• Completion rates.
• Assessment scores.
• Certificates issued.
• Mandatory training status.

These measures can be important.

But they don't necessarily demonstrate how much knowledge employees retain over time or whether they can apply it appropriately.

Consider a data protection course.

An employee completes the module and answers the assessment questions correctly.

That provides evidence of performance on the assessment at that time.

But will they recognise a relevant information security concern six months later?

Will they remember the appropriate reporting procedure?

Will they apply the guidance correctly under pressure?

Those are different questions.

A more complete approach to workplace learning considers not only initial understanding but also retention and application.

1. Use retrieval practice instead of relying entirely on re-reading

One of the most useful techniques for strengthening learning is retrieval practice.

Retrieval practice involves actively bringing information to mind rather than simply reviewing it again.

For example, after completing a course, you might close your notes and ask yourself:

• What were the three most important points?
• What did I learn that I didn't know before?
• Can I explain the key process without looking?
• What would I do if I encountered a relevant workplace situation?

The act of attempting to remember can help strengthen future recall.

Why retrieval practice works

When you re-read notes, the information is visible.

That can make it feel familiar.

But familiarity isn't necessarily the same as being able to recall something independently.

Retrieval practice requires you to produce the information from memory.

This provides an opportunity to identify what you know and where your understanding needs further work.

Practical example: after a safeguarding course

Instead of immediately re-reading the slides, ask yourself:

"What are the relevant reporting steps if I identify a safeguarding concern?"

Write down what you remember.

Then check your response against the current organisational procedure.

Correct any gaps or misunderstandings.

For safety-critical information, checking against authoritative guidance is essential. Retrieval practice should not be used as a substitute for accurate procedures.

Try this

At the end of your next learning activity:

1. Close the learning material.
2. Write down three key points from memory.
3. Identify one practical application.
4. Reopen the material and check your accuracy.
5. Correct anything you've misunderstood.

This can be completed in a few minutes for straightforward learning.

2. Space your learning over time

Spaced learning involves revisiting information across separate occasions rather than concentrating all review into one session.

Research on distributed practice shows that spacing learning can improve longer-term retention compared with equivalent practice concentrated into a single period.

What does spaced learning look like?

Imagine completing a professional development course on Monday.

Instead of reviewing everything three times that afternoon, you might revisit the important information on several later occasions.

For example:

When	Activity	Purpose
Immediately after learning	Recall key points	Check initial understanding
A few days later	Answer short questions	Practise retrieval
One week later	Review a relevant scenario	Apply knowledge
One month later	Revisit key concepts	Support longer-term retention
Later, as appropriate	Review through practice or refresher learning	Maintain relevant knowledge

This is an illustrative schedule, not a scientifically prescribed interval for every subject.

The most appropriate spacing depends on what you're learning and how long you need to remember it.

Why spacing helps

When information is revisited after some time has passed, recalling it may require more effort.

That effort, when appropriately supported by feedback, can strengthen learning.

Practical tip

After completing significant professional development, add two or three short review reminders to your calendar.

You don't necessarily need to repeat the entire course.

A short retrieval exercise or relevant workplace scenario may be sufficient.

3. Apply new knowledge in the workplace

Learning becomes particularly valuable when it influences what you do.

You might understand a concept during training but struggle to apply it in a real situation.

This is why opportunities for practice matter.

Example: learning to give better feedback

Imagine attending a workshop on constructive feedback.

You learn about:

• Using specific examples.
• Focusing on observable behaviours.
• Asking open questions.
• Agreeing meaningful next steps.

You could simply record that you completed the workshop.

Alternatively, you could identify an appropriate opportunity to practise one of the techniques.

For example, during your next scheduled one-to-one meeting, you might use more specific examples when discussing progress.

Afterwards, reflect on what happened.

Did the conversation become clearer?

Was the feedback understood?

What would you change next time?

This connects learning with professional practice.

Do you have to apply learning within 48 hours?

No.

There is no universal 48-hour rule that guarantees stronger retention.

However, arranging a suitable opportunity to practise soon after learning can be useful, particularly when the knowledge or skill is relevant to your current responsibilities.

For some learning, immediate application is appropriate.

For other subjects, practice may need to take place in a supervised environment or through simulations before workplace use.

The important principle is to provide meaningful opportunities for application.

4. Explain what you've learned to someone else

Teaching or explaining a concept can encourage deeper processing of information.

To explain something clearly, you often need to organise your understanding and identify the most important points.

You may also discover gaps in your knowledge.

Example: a five-minute team briefing

Imagine you've attended a webinar on improving workplace communication.

At your next team meeting, you offer a short summary.

You explain:

1. The main idea.
2. Why it matters.
3. An example of how it could be applied.
4. One question for colleagues to consider.

Preparing this explanation encourages you to revisit and organise the learning.

Questions from colleagues may also reveal areas you need to understand more fully.

The important distinction

Simply speaking about a subject does not guarantee that you understand it.

The benefit comes from accurately explaining, organising and retrieving relevant knowledge.

Where information is technical, regulated or safety-critical, verify your understanding before teaching others.

5. Connect new learning to what you already know

New information can be easier to understand and remember when it connects meaningfully with existing knowledge.

This process is often called elaboration.

Instead of memorising an isolated fact, you explore how it relates to something you already understand.

Example: learning about data protection

Suppose you're learning about data minimisation.

Rather than simply memorising the term, ask:

"Where do I handle personal information in my role?"

"What information do I genuinely need to complete a particular task?"

"How does this principle affect our existing processes?"

These questions connect an abstract concept to familiar situations.

Three questions that encourage elaboration

• Why does this work?
• How does it relate to something I already know?
• Where might I encounter this in practice?

The aim is to build meaningful understanding rather than memorising disconnected statements.

6. Use realistic scenarios and problem-solving

Knowing a rule is not always the same as applying it.

A learner may recognise the correct answer in a multiple-choice question but struggle when faced with a more complicated situation.

Scenario-based learning can help bridge this gap.

Example: information security

Knowledge question:

"What should you do if you suspect a personal data breach?"

A learner may remember the correct reporting principle.

Scenario question:

"You realise you've sent an email containing personal information to the wrong recipient. What should you do next?"

The scenario requires the learner to consider how the relevant procedure applies.

For workplace learning, realistic examples can help employees practise making decisions.

Why feedback matters

Scenarios are most useful when learners receive accurate feedback.

If someone selects an inappropriate response, they need to understand why.

Otherwise, they may reinforce a misunderstanding.

Where the subject involves legal, regulatory or safety requirements, scenarios should be checked against current authoritative guidance and organisational procedures.

7. Reflect on learning and review what changed

Reflection can support learning by encouraging you to revisit an experience, identify important insights and consider future action.

But not every reflection is equally useful.

A statement such as:

"The course was interesting and I learned a lot."

provides little detail.

A more meaningful reflection might explain:

"The course helped me recognise that I sometimes provide too much information during team briefings. I intend to structure future updates around three key messages and check understanding afterwards."

This identifies:

• The learning.
• Its relevance.
• An intended change in practice.

A later reflection could explore what happened when the approach was used.

Reflection and retrieval practice

Writing a reflection from memory can involve retrieval practice.

For example, recalling the most important learning points before checking your notes encourages active recall.

However, reflection and retrieval practice are not identical.

A reflection may focus on interpretation, application and future action.

Retrieval practice specifically involves bringing information to mind.

Combining the two can be useful.

Your CPD log can become a learning retention tool

Many professionals think of a CPD log as a place to record completed activities.

And that's certainly one of its purposes.

But a well-maintained CPD record can support much more than administration.

It can help you revisit learning, recognise patterns and reflect on application.

1. Recording learning encourages recall

After a course, you can write down the most important points from memory.

This gives you an opportunity to practise retrieval.

2. Reflection encourages meaningful processing

Explaining why the learning matters helps connect new knowledge to your professional experience.

3. Reviewing entries creates opportunities for spaced learning

Returning to earlier entries can prompt you to recall important concepts.

For stronger retrieval practice, try recalling the learning before reading the original reflection.

4. Follow-up reflections connect learning with practice

You can return to an entry and consider whether you applied the learning.

For example:

Initial reflection:

"I intend to use more open questions during team discussions."

Follow-up reflection:

"I used open questions during three development conversations. Colleagues contributed more ideas, although I still need to improve how I summarise the agreed actions."

This creates a more meaningful development history.

5. Your record can reveal development priorities

Over time, reviewing CPD entries may help identify areas where you've undertaken considerable learning and areas that need further attention.

A CPD log is not a validated measure of competence.

But it can provide useful evidence for reflection and development planning.

A practical example: turning a one-hour webinar into lasting learning

Imagine attending a webinar about managing difficult workplace conversations.

Here's how you could extend the learning beyond the session.

Immediately after the webinar

Close your notes and write down three key ideas.

For example:

• Ask open questions.
• Establish the facts before making assumptions.
• Agree clear next steps.

Check your recollection against the learning material.

Within the following week

Identify an appropriate opportunity to practise one technique.

Perhaps you use more open questions during a routine development conversation.

After applying the learning

Reflect on the experience.

What worked?

What felt difficult?

What would you change?

A few weeks later

Return to your original CPD entry.

Before reading it, try to recall the three main ideas.

Then compare your recollection with the record.

One month later

Review whether the learning has influenced your approach.

If you need further practice, identify another suitable opportunity.

The webinar remains a one-hour learning event.

But the learning process extends beyond attendance.

A simple 30-day learning retention plan

You don't need a complicated system to begin improving retention.

Try this routine after your next significant learning activity.

When	What to do	Approximate time
Day 0	Recall three key points and record your CPD reflection	5 minutes
Day 2–3	Test yourself on the important concepts	3–5 minutes
Week 1	Apply or practise something relevant	Depends on activity
Week 2	Revisit the learning through questions or a scenario	5 minutes
Week 4	Review your CPD entry and reflect on application	5–10 minutes

These are suggested intervals rather than a universal evidence-based formula.

Adjust them according to the importance and complexity of the learning.

For safety-critical skills, professional standards and organisational requirements should determine the necessary training, supervision and assessment arrangements.

What managers can do to improve workplace learning retention

Learning retention isn't solely the employee's responsibility.

Managers and organisations can create conditions that support learning.

Before training

Discuss why the learning is relevant.

Identify what the employee hopes to gain.

Consider how the learning may connect to their responsibilities.

After training

Ask what the employee found useful.

Encourage them to explain the key points.

Identify appropriate opportunities for practice.

During regular one-to-ones

Review whether the employee has applied the learning.

Discuss challenges.

Offer feedback and support.

Over time

Revisit important knowledge and skills where appropriate.

Consider refresher learning, scenarios or workplace assessment when required.

This approach makes professional development more connected to actual work.

Five questions managers should ask after training

Rather than simply asking "Was the course good?", try:

1. What were the three most useful things you learned?
2. Was there anything that challenged your existing understanding?
3. How could you apply the learning in your role?
4. What support would help you put it into practice?
5. When should we review whether it has made a difference?

These questions encourage reflection, retrieval and application.

They also help managers move beyond course completion as the only measure of development.

What this means for compliance training

Learning retention is particularly important when employees need to remember procedures, recognise risks or respond appropriately to workplace situations.

Examples include:

• Safeguarding.
• Health and safety.
• Data protection.
• Information security.
• Anti-money laundering.
• Professional conduct.

However, organisations should distinguish between remembering information and demonstrating competence.

An employee may recall a procedure correctly but still require supervised practice or formal assessment before performing certain tasks.

Likewise, a course completion certificate does not automatically demonstrate practical competence.

A more complete approach

Depending on the requirement, organisations may need to consider:

Completion: Has the employee undertaken the required training?

Understanding: Can they demonstrate relevant knowledge?

Retention: Can they recall important information when needed?

Application: Can they use the learning appropriately?

Verification: Has any required evidence or competence been checked by an authorised person?

The appropriate approach depends on the role, risk and applicable standards.

How WorkplaceHero supports reflective professional development

WorkplaceHero's free individual CPD log is designed to help professionals maintain a structured record of their learning throughout their careers.

Rather than simply collecting course certificates, individuals can record relevant development activities and reflect on what they've learned.

Record learning while it's fresh

Capture the activity, relevant duration and key learning points.

Reflect on professional development

Document how learning relates to your responsibilities and future development.

Review previous learning

Return to earlier entries to consider what you've retained and applied.

Build a continuous professional history

Maintain a lifelong record of formal and informal development.

Explore additional insights with PassportPro

PassportPro provides more advanced professional development analytics, credential management and career development functionality.

WorkplaceHero's free CPD log does not replace dedicated spaced-repetition software or automatically guarantee improved retention.

But it provides a useful foundation for recording, revisiting and reflecting on professional learning.

Your CPD record can become more than evidence of attendance. It can support an ongoing learning habit.

Start your free WorkplaceHero CPD log

Learning retention checklist

After your next course, webinar or significant professional learning activity, try the following:

• Recall the most important points without looking at your notes.
• Check your recollection against the learning material.
• Record a meaningful CPD reflection.
• Identify one relevant application.
• Arrange an appropriate opportunity to practise.
• Set a reminder to revisit the learning.
• Explain the concept to someone else where appropriate.
• Review the learning again after some time has passed.
• Reflect on what happened when you applied it.
• Identify anything you still need to understand or practise.

You don't need to use every technique after every activity.

Start with retrieval, spaced review and meaningful application.

Frequently asked questions

Why do we forget information after training?

Forgetting is a normal feature of memory. Recall depends on factors such as understanding, attention, prior knowledge, time and opportunities to retrieve or apply information.

What is the forgetting curve?

The forgetting curve describes how recall may decline over time after learning. Its exact shape varies, and fixed percentage claims should not be treated as universal.

What is retrieval practice?

Retrieval practice involves actively recalling information from memory, such as answering questions without looking at notes.

Is re-reading notes ineffective?

Not necessarily. Re-reading can support understanding, especially when material is unfamiliar. However, retrieval practice often provides stronger benefits for long-term recall than relying on repeated reading alone.

What is spaced repetition?

Spaced repetition involves revisiting information across separate occasions rather than concentrating all review into one session.

How often should i review what i've learned?

There is no single schedule suitable for every subject. Short reviews spread over time can help, with intervals adjusted to the material and learning goals.

Does teaching someone else improve retention?

Explaining information can support learning by encouraging retrieval, organisation and deeper processing. The explanation should be accurate and appropriately checked.

Does applying learning help you remember it?

Relevant practice can support retention and the ability to use knowledge or skills in appropriate situations.

Can writing a CPD reflection improve memory?

It may support learning when it involves meaningful recall, explanation and reflection. Simply copying information into a log is less likely to provide the same benefits.

Is WorkplaceHero's CPD log free?

Yes. WorkplaceHero offers a free individual CPD log, with additional premium functionality available through PassportPro.

Final thoughts: learning shouldn't end when the course finishes

We invest considerable time in professional development.

We attend training.

Complete courses.

Watch webinars.

Read guidance.

And develop new knowledge and skills.

But completing an activity is only one part of learning.

What happens afterwards matters too.

Can you recall the important information?

Can you explain it?

Can you apply it?

Can you revisit it when needed?

Retrieval practice, spaced learning, meaningful application and reflection can all help support these processes.

And maintaining a consistent CPD record gives you a practical place to capture and revisit your development.

The goal isn't to remember every word of every course. It's to retain and apply the knowledge that matters.

Record, reflect on and review your learning with WorkplaceHero's free CPD log

Related reading

• Why most employees cannot remember what they learned this year
• The 15-minute monthly habit that accelerates careers
• How to write a powerful reflective statement for your CPD
• You do not need a course for it to count as learning