This happens mainly due to the lead content in the paints which are mostly used for toys, for small children.
its all becoz of lead More lead content used in paints is one of the main cause of decrease in a child's IQ.
Difference between IQ levels of 150 and 155 will be similar to differences between IQ levels of 95 and 100
tyw
The average score is 100, so you have an average IQ. http://www.mensa.org.uk/iq-levels/
ADHD is not associated with different IQ levels; it is a neurobehavioral disorder which effects focus and impulse control. It does not exert a visible difference in IQ levels.
IQ levels
mortality decline
what might cause a culture today to decline or disappear
2.11 iQ test score
Deflation is a decline in general price levels of goods and services and a stronger value in money.
SEX is the only cause of mortality decline....
disease.