Children's Study Initiative » Normal IQ http://csi2009.net Devoted to Children with Learning Disabilities Fri, 16 Jan 2009 09:53:28 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Intelligence Quotient (IQ) http://csi2009.net/2009/01/intelligence-quotient-iq.html http://csi2009.net/2009/01/intelligence-quotient-iq.html#comments Thu, 15 Jan 2009 16:09:41 +0000 Dr. Beena Johnson http://csi2009.net/?p=84 Intelligence Quotient (IQ) = Mental age / chronological age x 100
Intelligence Quotient is expressed as percentage

Normal IQ: 85 – 110
Borderline intelligence: IQ between 70 – 84
Mild mental retardation: IQ between 50 -69
Moderate mental retardation: IQ between 35 – 49
Severe mental retardation: IQ between 20 – 34
Profound mental retardation: IQ less than 20

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