From 1880 to 1885, Hermann Ebbinghaus ran a study about the memorisation of nonsense syllables, such as "WID" and "ZOF" by repeatedly testing himself after various time periods and recording the results. He plotted these results on a graph creating what is now known as the "forgetting curve".

Perhaps the most important discoveries are those which relate to the appropriate distribution of the periods of study...Acts of revision should be spaced in gradually increasing intervals, roughly intervals of one day, two days, four days, eight days, and so on.

The forgetting curve hypothesizes the decline of memory retention in time. This curve shows how information is lost over time when there is no attempt to retain it.

Murre and Dros present a successful replication of Ebbinghaus’ classic forgetting curve from 1880 based on the method of savings. The forgetting curve has indeed been replicated and that it is not completely smooth but most probably shows a jump upwards starting at the 24 hour data point.

The speed of forgetting depends on a number of factors such as the difficulty of the learned material (e.g. how meaningful it is), its representation and physiological factors such as stress and sleep. Furthermore higher original learning also reduces forgetting. The rate differs little between individuals.

Spitzer tested 1939 the effects of a type of spaced repetition with over 3600 students who were learning science facts and showed that spaced repetition was effective.

Spaced practice is a feasible and cost-effective way to improve the effectiveness and efficiency of learning, and has tremendous potential to improve educational outcomes.

Memory formation becomes more effective with longer inter-stimulus intervals between training sessions because of decreasing temporal overlap between successive, short-lived learning traces.

They are dead; but they live in each Patriot's breast, And their names are engraven on honor's bright crest.

I have no issue with raising minimum wage, but then the customer can't say to us, 'Why are you raising your prices?'

Live theater is my favorite of all the mediums that I have worked in, so I have every intention on coming back to Broadway.

It might seem paradoxical that the biggest scientific instruments of all are needed in order to probe the very smallest things in nature. The micro-world is inherently 'fuzzy' - the sharper the detail we wish to study, the higher the energy that is required and the bigger the accelerator that is needed.

Our outrage at inequality is primal. But primal emotions are not always noble ones. Of course, when I see a colleague receive some award, I covet it. But this is not me at my best, and these are not the feelings we would instill and promote in our children.

Well, my whole thing is that I'm kind of like a show-off!

I love to put on diamonds and beautiful evening gowns and make my girl-friends upset.

It's hard to say goodbye to the streets. It's all how you do it. You can pass by and say, 'What's happening?' and keep it moving, but it's a certain element that'll never be able to roll with you once you get to this level, because that's the separation of it all.

It was impossible to reason with a negro-that the only way to keep him in his place was to keep him under fear.

To other countries, I may go as a tourist, but to India, I come as a pilgrim.

If I could be reincarnated as a fabric, I would come back as a 38 double-D bra.

Art is science made clear.

I am a conservative, but I am not a zombie.

You cannot allow your desire to be a winner to be diminished by achieving success before and I believe there is room for improvement in every sportsman.

The fact people think that when you sell a lot of books you are not a serious writer is a great insult to the readership. I get a little angry when people try to say such a thing.

Juan Hernandez was an actor out of New York, but what made Juan so great and what made Omar so great was that they both already knew how to box, so we didn't have to take them into a gym and teach them how to throw a left jab.

I think that love isn't what you think it is when you're in your twenties or even thirties.

War is society's dirty work, usually done by kids cleaning up failures perpetrated by adults.

There is this tremendous amount of arrogance and hubris, where somebody can look at something for five minutes and dismiss it. Whether you talk about gaming or 20th century classical music, you can't do it in five minutes. You can't listen to 'The Rite of Spring' once and understand what Stravinsky was all about.

I am better able to retract what I did not say than what I did.

I think I hate cynicism more than anything else. It's the curse of our age, and I want to avoid it at all costs.

Growing up in New York City, my car culture is minimal. I rode on the train, the bus. I walked; I rode my bike, and when I was younger, I rode my skateboard.

The mark of great sportsmen is not how good they are at their best, but how good they are their worst.

O! Let me not be mad, not mad, sweet heaven; keep me in temper; I would not be mad!