Thursday, April 10, 2014

Too long for Twitter

Agatha Christe once wrote that, as a girl, she (mis)estimated she would never be so rich as to be able to afford a motor car, but never so poor as to be unable to hire servants.

HT Brad DeLong 


Monday, April 7, 2014

spacing effect

The spacing effect essentially says that if you have a question (“What is the fifth letter in this random sequence you learned?”), and you can only study it, say, 5 times, then your memory of the answer (‘e’) will be strongest if you spread your 5 tries out over a long period of time - days, weeks, and months. One of the worst things you can do is blow your 5 tries within a day or two. You can think of the ‘forgetting curve’ as being like a chart of a radioactive half-life: each review bumps your memory up in strength 50% of the chart, say, but review doesn’t do much in the early days because the memory simply hasn’t decayed much!
the whole thing here...