Only later did I start to actually construct hypotheses and test them. Everything got even easier when I started learning more about memory and reading studies related to this area of knowledge.

Before I share with you my conclusions and failures, let's start with how my experiments were run.

How did I choose words for my memory experiments?

This is a very important question. Some people think that any words will do. That's far from the truth.

The reason is that your current knowledge modulates the new knowledge you want to acquire.

If you know English and you're learning French your results will be immediately distorted. Depending on a source, 40-50% of English words originate from French.

What did I test?

Time to get to the nitty-gritty of my memory experiments. As you already know, I experimented almost exclusively with words which were completely foreign to me in order to minimize my background knowledge interference.

Another important part is the methods I used to test my knowledge. I always tested my recalls using the following methods:

Free recall

Primacy effects are displayed when the person recalls items presented at the beginning of the list earlier and more often. The recency effect is when the person recalls items presented at the end of the list earlier and more often. Free recall often begins with the end of the list and then moves to the beginning and middle of the list.

For that reason, I always tried to recall all the batches at once in order to minimize the number of learning sessions. That gave me the certainty that my results were warped.

Why even measure it at all?

Measuring your results certainly doesn't sound sexy but it's absolutely necessary. You can't know for sure that one method is better than the other if you don't verify it and you don't control your variables. 

What's more, if you don't measure, you can't improve. And that means a great deal in the world of language learning.  Using ineffective methods can literally mean that you will have wasted thousands of hours by the end of your life.

I am not that loco and I was never willing to take such a risk. And I am pretty sure you also don't want to be the guy with a tombstone saying, "It took him 20 years to learn a language to an A2 level, what a moron. Love, family."

Whenever you're in doubt - measure your results. It will help you get to the truth.

What does it mean that the experiment failed?

Under every experiment, you will find an explanation of why a given experiment failed or not. 

What do I mean by that?

Most of the time it means that it either didn't provide me with the results I expected or it wasn't more effective than the method I tested it against.

Of course, in a sense, none of them failed. They all helped me to understand the science of memory better and to improve my memorization skills. Or in more elegant words of Thomas Edison, I can say that:

 "I have not failed. I've just found 10,000 ways that won't work." - Thomas A. Edison

The list of methods I have tested

Below you will find a long list of methods I have tested throughout the years. I can't vouch that I have included all of them. I have a nasty habit of throwing away everything I don't need. Unfortunately, in many instances, the victim of my habit was a bunch of notes documenting my experiment.

All my experiments are accompanied by the main conclusions and complementary articles when needed. Enjoy!

Chapter 0 - The typical school stuff

I guess this is the type of learning which is a baseline for many people. All you do is what they tell you to during a class. You read something, do some grammar exercises, write an essay and so on.

Experiment status:

It failed.

Why did it fail? 

What you give is what you get. I think I simply didn't apply myself to learning hence my results were just terrible.

The main takeaway:

Apply yourself? Learn regularly? Take your pick. 

Chapter 1 - Using a notebook

Next, I rewrote ALL their meanings, collocations and such from an Oxford Dictionary into my notebook. Then I read my notes on my way to school.

You're probably wondering why I didn't just mark these words in a dictionary and read them there, huh?

Well, maybe because I was fed with a lead spoon as a child. Or it has something to do with repeatedly falling down headfirst from a tree.

I don't know. But these are some of the excuses I use. If it wasn't bad enough I used this method for at least 3 or years when I was about 18-22.

Experiment status:

It failed.

Why did it fail?

The method was clearly unsustainable. It took me a lot of time to rewrite all the words I needed. What's worse, there were so many of them that I couldn't review them in any regular way.

The main takeaway (i.e. what I learned):

This was my first system. It was terrible but it also taught me an important lesson. You will always progress, no matter how slow, if you have any kind of learning system in place. Sure, this one sucked but at least it gave me a systematized way of learning new words and their meanings.

A good idea is to start with frequency lists.

Read more:

Chapter 3 - Using a dictionary

I enrolled in a language school to master German and after about four years I was ready to sit the Goethe-Zertifikat B2 exam. The last trial before the real thing was a mock exam. I took it, I passed it and life felt great.

 I felt so proud of myself as I was leaving my language school, "Now I know English, German and Polish, there are 7 languages to go".

The life had different plans for me. Just as I was ambling down the street I was approached by an elderly German couple asking me if I speak any German.

"I do", I replied proudly.

"Do you know any good restaurants around here?", they asked.

As they were finishing their question something terrible happened. I froze. I couldn't spew out any coherent answer. I huffed and puffed and floundered until I managed to form some vague answer.

As they were leaving I felt devastated. I spent 4 damn years in a language school and couldn't even hold a simple conversation! On top of this, I just passed a B2 certificate.

Frustrated by this experience I decided to simply pick up a Polish-German dictionary, mark the works I didn't know but I found useful and start creating short sentences with them.

I used to take this dictionary everywhere with me. I kept my nose in it and wandered around oblivious to my surroundings.

I definitely looked strange but at least I had my pants on most of the time and didn't yell "repent sinners" so that's nice.

Experiment status:

It kinda failed.

Why did it kinda fail?

The problem with this method was that it didn't allow me to review my vocabulary in any meaningful way. I was jumping from one word to another.

Oftentimes, I spent way too much time concentrating on the words I already knew. Considering that your average pocket dictionary has usually at least 15k words, it was the problem of considerable size.

The main takeaway (i.e. what I learned):

1. Even though this method didn't seem like much, I consider it a big success to some degree. It was then that I realized that creating my own sentences with virtually any word can boost my vocabulary retention.

You need to encode words on your own and you need many words in order to convey your thoughts.

2. This method further reinforced my conviction that having a ready-to-use word list can positively affect my learning rate.

Up to this day, I remain a huge fan of pocket dictionaries. Even on the days, when I don't have much time, I can encode and learn up to 30 words in 15 minutes simply by picking them up from a dictionary.

Trust me, no other method comes even close to this.

Classic mnemonics

If you have never heard of mnemonics, here is, more or less, how they work:

Example:

Let's say that you want to learn a Spanish word for "trabajar". Upon a closer inspection, you notice that:

a) "traba" looks a lot like "drab"
b) "jar", well, it looks like a "jar".

Can you see it?

Great.

The only thing left is to retrieve these words by imagining this entire situation.

If you have never tried this method, it can be quite effective. And, as you can probably guess, that was my initial impression as well.

Status:

It failed.

Why did it fail?

1. I have mentioned before that encoding your own vocabulary is extremely important. If that's true, then why do mnemonics work so badly for long-term memorization and retention?

Two types of encoding:

a) shallow encoding

Shallow encoding doesn't help you to connect the piece of information with other meaningful information nor does it help you to further your understanding of it.

It usually concentrates on meaningless banalities.

Example:
You are trying to memorize the word "skada" (Swedish for "to damage"). The prime example of shallow encoding would be to start counting the number of vowels or consonants in this word.

b) deep encoding

The absolute opposite of shallow encoding. This time you are trying to make meaningful information between different items.

2. The other reason is fairly simple. Sometimes it takes a lot of time to find the right associations. Needless to say, spending 5 minutes on every word in order to do this is pointless.

The main takeaway (i.e. what I learned):

1. Even though this method didn't seem like much, I consider it a big success to some degree. It was then that I realized that creating my own sentences with virtually any word can boost my vocabulary retention. You need to encode words on your own and you need many words in order to convey your thoughts.

2. This method further reinforced my conviction that having a ready-to-use word list can positively affect my learning rate.

Read more:

And yet, once again.

Experiment status:

It failed.

Why did it fail?

Unfortunately, I failed to recognize that quick short-term memorization doesn't equal successful long-term memorization.

Sure, I was memorizing word quicker but I still had problems using them in conversation and kept on forgetting them anyway.

The main takeaway (i.e. what I learned):

Please check the main takeaway for classic mnemonics.

Mnemonics and meditation

Another brilliant idea of mine was thinking that if I only improve the vividness and clarity of my pictures, I will be able to retain them much longer.

I decided to include a 30-minute meditation session to my learning schedule. During that time, the only thing I did was revisiting my mnemonic stories and making them more vivid.

Experiment status:

It failed.

Why did it fail?

No matter how clear your pictures are - if you don't apply active encoding to your learning, you will inevitably fail.

The main takeaway (i.e. what I learned):

Please check the main takeaway for classic mnemonics.

Mnemonics with SRS

The next step for me was combining mnemonics with SR programs like ANKI.
I figured out that if I only optimize my repetitions, my retention rate will go through the roof.

Even with this method, I was using a lot of variations. Among others, I tried to:

Experiment status:

It failed.

Why did it fail?

This is where I gave up on mnemonics. My stats and personal experience were very clear about this method of learning.

It doesn't matter how much I tweak every tiny element of this method - it will always suck as it fails to encapture the very essence of learning - applying contextual learning and deep encoding.

The main takeaway (i.e. what I learned):

Please check the main takeaway for classic mnemonics.

Read more:

Chapter 4 - Traditional approaches

I started looking into passive learning years after I started my language learning/memory journey. I didn't do it because I believed they are very effective.

On the contrary, I have never been a fan of passive learning and I don't understand why so many language bloggers promote them.

Passive learning, as appealing as it might be, has been found, time and time again, terribly ineffective compared to active learning. 

The best argumentation for this line of learning I have seen so far is quoting the misbegotten theory of Krashen who was debunked one year after it was published.

As negative as this introduction may sound, I still was very curious how many words I can pick up and activate from passive learning.

I didn't write down any words, I was just trying to memorize them while reading (without mnemonics).

The final result?

After a careful analysis of my vocabulary, I found out that I picked up 5 extra words.

That experiment definitely echoes the experience of my students. Even though it's only an anecdote.

Over one year ago, a student of mine who learned German decided to read the first two books of the Harry Potter series in German.

At the time, she was on a B1/B2 level. I tried to discourage her from doing it and direct her efforts to active learning but she put her foot down.

After about 4 months she told me that she finished reading them - in total about 1000 pages or so.

The result was once again quite depressing. Once she told me about her intention, I started jotting down EVERY NEW WORD which came up during our classes. It wasn't difficult at all as I taught her from the very beginning. I knew exactly which words she already used.

Experiment 2:

In my next experiment conducted in May 2018, I set off to check how many new words I can pick up from watching English movies with French subtitles. I was pretty sure that this method would be more effective since it involves more sensory channels.

I haven't been able to memorize other words than the ones I learned before. In other words, it allowed me to learn more.

Experiment status:

it was a success and a failure at the same time.

Why did it fail/succeed?

1. The experiment was certainly a success because it confirmed something I have been telling for a long time. Passive learning can be an amazing tool if you use it as an adjacent method.

Every day you should do your best to concentrate on active learning. Once you're done and you can't din more words into your head, feel free to read or listen as much as you want.

Spontaneous activation of words is much easier once you already have these words in your head. This is definitely something my experiment confirmed.

2. The experiment also failed because clearly reading was subpar to basically any active learning method, I have ever tried.

The main takeaways (i.e. what I learned):

1. "Free recall exercises, are good measures of initial learning and remembering (Mayer, 2009). However, transfer tasks, such as the written fill-in-the-blank activity and the problem-solving task are perhaps better measures of true learning (Mayer, 2009)."

Just because you have a general impression of remembering words after a reading session, it doesn't mean that you've committed them to your memory. The only tests which can confirm involve the active use of the said words.

2. Acquisition of new vocabulary from reading will be terribly slow and ineffective until you learn about 5k words. 5000 words allow you to understand about 98% of most ordinary texts (Nation (1990) and Laufer (1997)).

Such a vocabulary size warrants also accurate contextual guessing  (Coady et al., 1993; Hirsh & Nation, 1992; Laufer, 1997). If you're hell-bent on learning this way, make sure that you know at least 3k words as it's the minimum threshold needed for contextual guessing. (Hazenberg and Hulstijn, 1996).

3. Your ability to speak fluently and produce spontaneous speech is dependent to a high degree on the amount of input you expose yourself to.

Read more:

Chapter 4 - Random memory experiments

All the experiments presented here reflect a very interesting stage in my memory journey. Back then, I was willing to run almost any memory experiment as long as there is at least one scientific paper behind it.

In hindsight, sometimes I don't know what the hell I was thinking!

Status:

It failed.

Why did it fail?

Because the memory experiment conducted in the lab are usually detached from reality and don't carry over to real life? That would be my guess. Interestingly, I noticed that my attention performance dropped while learning in the park. I was constantly distracted by damn squirrels, dogs, and bawling children. The general conditions weren't very conducive to studying.

The main takeaway (i.e. what I learned):

Learn where there is a minimal amount of distraction in order to maximize your memory performance.

Emotional modulation of the learned material

One of the undeniable laws of learning says that we always remember better items which are emotionally salient. That gave me the idea that if I learn how to modulate this saliency, I could use it to my advantage to boost my retention.

I did lots of weird things to achieve this goal. I screamed foreign words out at the top of my lungs. I made myself furious or jealous with the help of my imagination and then proceeded to memorize short lists of words.

Status:

It failed.

Why did it fail?

Truth be told, I was able to remember a lot of these words right away so the first impression suggests that the method works. But as I usually say, in order to truly discover whether something works you need to run delayed recall tests.

You have to wait at least 1 or 2 weeks before you retest your memory. Only then do you get a clear answer about whether a method works or not. This strategy failed. 

In hindsight, the reason is simple - if everything stands out emotionally, nothing stands out emotionally.

The main takeaway (i.e. what I learned):

Just don't.

Learning before going to sleep

Another great strategy which I have heard about was learning before going to sleep. Like all short memory experiments of mine, it lasted 3 weeks in September 2015. The idea for this experiment was sparked by research showing a correlation between time of studying and how it can potentially improve your recall.

The protocol was very simple. I tried to memorize 10 random words from languages I knew right before going to sleep.

How did I fare?

Not much better than usually. My retention rate was improved by about 4%.

Status: 

It failed.

Why did it fail?

I know that you might think that 4% is not too shabby and it's worth something. However, in my case, I deemed the results less than impressive. Especially considering that I tried to memorize words from the languages I already knew which was a major mistake.

What's more, if we include other co-founders, my results won't be much better than the chance. I had definitely better results with practicing motor skills before going to bed.

The main takeaway (i.e. what I learned):

Try at your own risk - I don't see any super-duper benefits. It's much more important to have a sound sleeping schedule than to practice at any specific time.

Combining learning with physical activity

There is plenty of research demonstrating the benefits of combining physical activity with learning. The general idea is to space your learning sessions and to interrupt them with bouts of vigorous exercise.

Here is a great excerpt from Out of Our Minds: Learning to be Creative (2011).

I started testing this idea in early 2016. Since I dislike gyms, I decided to weave in quick calisthenics workouts into my learning schedule.

Long story short, such an approach managed to significantly improve my attention span and slightly boosted my recall.

Status: 

It succeeded!

Why did it succeed?

Even though there is a lot of great science which explains in a detailed way how exercise can help you with studying, I think it has a lot to do with Serial-position effect.

Why do I think so?

Because I have noticed similar improvements while taking so-called meaningful breaks i.e. taking a walk, or just lying down and breathing mindfully.

The main takeaway (i.e. what I learned):

Mixing work-outs with your learning is certainly worth replicating.

Read more:

Is there a better way?

2. a different approach

Since my initial results with this method weren't very satisfying I decided to step it up and tried to check how different kind of pictures affect my recall. What's more, I also verified how using the same picture in many flashcards affects my learning.

What kind of pictures did I use?

I concentrated on pictures which are emotionally salient. I tried everything starting from gore pictures to porn pictures. The results, especially with the latter, weren't very good. I was sitting there like a horny idiot and couldn't concentrate even one bit on any of the words. It's like having a sexy teacher in high school. You can't wait till you get to your classes but once you do, you don't hear any words.

Funny enough, I remember most of the pictures from this experiment to this day which only further proves to me that your typical approach won't work here.

So what kind of pictures did work?

Pictures from my personal collection. I found out that if I use one picture in a lot of flashcards where every flashcard concentrates on one word, I am able to recall words extremely easily. In addition, my retention rate has also been improved, although not as significantly as my ability to retrieve words.

Status: 

failure/success.

Why did it fail?

While it's true that it's really easy to memorize picture, I haven't noticed any amazing benefits using a typical approach i.e. inserting a new picture into every flashcard.

Why did it succeed?

I think that my approach to using pictures in language learning is so effective because it mimics a lot how we normally acquire vocabulary as children. It's much easier to memorize names of different objects and phenomena if the same situation occurs frequently.

I have never seen any scientific experiments in this vein, so I hope that the linguistic community will pick it up one day.

The main takeaway (i.e. what I learned):

If you want to use pictures in your language studies, don't waste time trying to find a new picture for every word. Choose one picture and use it multiple times in different flashcards. Each time try to memorize a different word.

Learning with GIFS

Don't worry, this will be a short one. If you haven't known this before, you can insert GIFs into your ANKI flashcards. Overall, it will give you an additional recall and retrieval boost.

Status:

It succeeded!

Why did it succeed? 

GIFs are very similar to real life situation. There is some dynamism there connected with visual stimulus.

The main takeaway (i.e. what I learned): 

It works provided that, once again, you use the same GIF for many flashcards.

Writing vs speaking

Another interesting experiment which I set out to conduct, in 2017 if I am not mistaken, was to settle once and for all what's better for language learning memory-wise - writing or speaking?

I won't elaborate about it since I have already written a full article about this problem (you can find the link below).

The main takeaway (i.e. what I learned):

All in all, my opinion is that for the most people out there, speaking is the superior learning method as it allows you to practice what probably matters to you the most – being able to communicate. What’s more, writing offers almost no benefits memory-wise compare to speaking.

Having that said, you should remember that the ultimate answer might be more complex for you. Some learn a language to write, some to watch movies and some to talk. Choose your goal and choose your preferred learning method in accordance with it.

Read more:

My learning pace over the years

The languages below are chronologically ordered starting with the ones which I learned first. I never bothered tracking how much time I needed to get a C1 level and beyond in most of these languages. The number below don't represent my current levels, just how fast I learned these languages to a B2 level.

Czech was also the last language I learned. About that time I decided to focus on other fields of science and improving my languages.

Right now, for the most European languages, I don't think it would take me more than 6-8 weeks to learn them to a B2 level. When it comes to trickier languages like Hungarian or any Asian language it's hard to say as I never looked into them deeply. Although probably if enough number of people are interested I will do another language mission in the future and will document my progress thoroughly.

Does it mean that these methods are bad?

As you have seen, I have classified quite many methods with which I have experimented as a failure. Does it mean they are inherently bad? Not necessarily. Depending on your current stage in language learning, many of them might boost your learning significantly provided that the one you're using right now is bad.

Even my results which show modest boosts (e.g. 5%) in recall and retrieval rate should be taken with a grain of salt. For example, if you're a person who is not very physically active, you might experience a significant increase in your ability to recall if just work out more.

You might also wonder why I haven't covered many of the popular apps and learning systems in this article. The answer is very simple - I didn't have to. There are dozens of principles of memory to master in order to learn effectively. Once you acquire them, you can simply disregard many popular solutions because you can spot all the mistakes they are perpetuating. Not every experiment is worth your time.

How many of these methods have you experimented with? Let me know.