2
votes
1answer
70 views

How far can we train mental calculation?

Mental calculators are people with a prodigious ability in some area of mental calculation, such as multiplying large numbers or factoring large numbers. Unfortunately I forgot where I heard it, ...
4
votes
3answers
427 views

What exactly is IQ, and how to develop or improve it?

Some people are said to have exceptionally high IQ. What exactly is that supposed to mean? Is it possible to develop high IQ if one doesn't have it? If yes, then how?
21
votes
1answer
148k views

How valid is Lumosity's Brain Performance Index and what normative information is available?

Background There is a test called Lumosity's Brain Performance Index. A sample profile of scores might be: ...
3
votes
2answers
603 views

Can intense multitasking improve fluid intelligence/working memory?

The Dual N-Back task is the only task I'm aware of that has empirical support showing that it improves working memory. It appears to improve working memory through multitasking, although this ...