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.

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.

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".

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.

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.

The links have to be between universities, R&D institutes, and industry. If these linkages are in place, it will result in products that are useful for society. The government has to leverage the money it spends on R&D to help develop new products useful for industry.

President Obama has asked me to chair his new President's Council on Jobs and Competitiveness.

Men and machines are good at different things. People form plans and make decisions in complicated situations. We are less good at making sense of enormous amounts of data. Computers are exactly the opposite: they excel at efficient data processing but struggle to make basic judgments that would be simple for any human.

Give me one hundred preachers who fear nothing but sin and desire nothing but God, and I care not whether they be clergymen or laymen, they alone will shake the gates of Hell and set up the kingdom of Heaven upon Earth.

I'm not sure a candidate ever feels his message is getting out.

I feel like writing a book there's always a version in your head that's an amazing version, but then you write the version that you can write.

I only live in the world of animal protection. I speak only of that. I think only of that. I am obsessed.

You can't connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future.

No, I'm not a drug addict, and neither is my husband. If that were so, you'd get a lot less work out of me. It would show in the performances and in the work.

The hacking trend has definitely turned criminal because of e-commerce.

I like the idea of not having to do stuff for the money, and if I want to, I can pick indie projects for the rest of my life and be quite happy doing that.

A woman doing comedy doesn't offend me, but sets me back a bit. I, as a viewer, have trouble with it. I think of her as a producing machine that brings babies in the world.

Persecution, religious pride, the love of contradiction, are the food of what the world commonly calls religion.

If I have learned one thing in life, it is never to take any man's own estimate of himself. He could very well be mistaken.

I'm a Ph.D. in economics, and so you analyze every situation uniquely because every international situation is unique.

Once we're willing to confront our emotional suffering, we begin making choices based on attraction instead of aversion, love instead of fear. Where we used to think about what was 'safe,' we now become interested in doing what seems right or fun or meaningful or ripe with possibilities.

I wouldn't treat a romantic scene any differently than any other scene. I would really say the biggest preparation was chewing gum and breath mints! For a kissing scene, it's all about the breath mints!

The most irresistible charm of youth is its bubbling enthusiasm. Youth sees no darkness ahead - no defile that has no outlet - it forgets that there is such a thing as failure in the world and believes that mankind has been waiting all these centuries for him to come and be the liberator of truth and energy and beauty.

I love the physicality side of roles, I really do, And when I get to do my own stunts, it's that much cooler. I'll do anything the production safety people will let me.

I actually have two children now, and sometimes I wonder if that's it. Because they do make writing and directing more complicated and more difficult, especially now that they're very young.

Machines built by human beings they will function correctly if we provide them with a very specific environment. But if that environment is changed, they won't function at all.

To love is to admire with the heart; to admire is to love with the mind.

People need to be re - sometimes we need to reinvent ourselves and then get reacquainted with our better selves.

Nothing is funnier than unhappiness, I grant you that. Yes, yes, it's the most comical thing in the world.