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.

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.

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.

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.

If people enjoy my profile from the privacy of their own home, that's entirely up to you.

To be a celebrity, I couldn't think of anything more cringe-worthy.

The trouble with censors is that they worry if a girl has cleavage. They ought to worry if she hasn't any.

Leaders are influential because they live and inspire other peoples future.

The first piece of art that I ever bought-when I could afford it-was a Warhol sketch from the period when he was just getting out of doing commercial work and more into art. It's a sketch of a young guy's face. I guess the gallery that I bought it from thought I would like it because the young guy kind of looked like James Dean.

Seeing other people is incredibly engaging, and that's one of the drivers that made us partner with Facebook - social communication. Not social newsfeeds, but actual face-to-face, seeing multiple avatars in a play experience, that's going to be a very big part of the future in VR.

Today it is cheaper to start a business than tomorrow.

I grew up in war and saw the United Nations help my country to recover and rebuild. That experience was a big part of what led me to pursue a career in public service. As Secretary-General, I am determined to see this organization deliver tangible, meaningful results that advance peace, development and human rights.

Investing in science education and curiosity-driven research is investing in the future.

I don't design clothes. I design dreams.

I love to see actors' work. I love to surf channels late at night and accidentally run into movies I hadn't seen before. It makes me very proud of the profession.

At times I ask myself if I shouldn't be living a more regular, stable life with a 9-to-5 job. Then I think about it and realise that there is no point in planning everything.

I always have a new haircut.

Caring for your inner child has a powerful and surprisingly quick result: Do it and the child heals.

We must give more in order to get more. It is the generous giving of ourselves that produces the generous harvest.

At the same time, new concepts and abstractions flow into the picture, taking up the task of describing the universe without reference to such time or space - abstractions for which our language lacks adequate terms.

I'm not denying that monopolies are terrible things, but I am denying that it is readily easy to resolve them through legislation of that nature.

Art is one thing that can go on mattering once it has stopped hurting.

Thats the crazy thing about lies. You start to fall for them yourself.

Israel is my past. My two boys are my future.

I quite enjoy cooking. I love cooking for my friends. It's communal, it reminds me of being with family, and it's also a form of therapy; it heals you from the inside out.

Instinct is the direct connection with truth.

My focus has been and will continue to be on doing my job.

The five stages denial anger bargaining depression and acceptance are a part of the framework that makes up our learning to live with the one we lost. They are tools to help us frame and identify what we may be feeling. But they are not stops on some linear timeline in grief.