2
votes
3answers
105 views

Is there a method to count objects without a pattern?

Is there a method in mnemonics to quickly find out the number of objects in, for example, a heap of tooth picks. There is this scene in the movie Rain Man, where the autistic protagonist can tell the ...
3
votes
1answer
41 views

What percentage of systematic data starts to be considered random

There is a set of 100 different objects in a box. I pull out 99 of them randomly and place them on a table and ask a person to take a look, then I put all objects back into the box. After a short (5 ...
4
votes
3answers
492 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?
3
votes
1answer
122 views

Should fantasy distractors be avoided in multiple choice questions

Is there any reason not to include fantasy distractors (made-up wrong answers) in multiple choice tests. Examples: What is the name of the compound HCl? a) Hydrochloric acid b) Chlorohydride acid ...
3
votes
1answer
121 views

What was his name again…ahh got it!

You all know the situation described in the title. You forgot something and start to search your memory and then after quite a while it jumps right in front of you, out of nowhere. My questions are: ...