10 year old child with mental age of 2 years will have an IQ level of: September 2010, March 2013 (h)
Ans. A: 20 The formula for calculating IQ developed by Terman was 100 x MA / CA. Chronological Age (CA) (i.e. Biological age) Mental Age (MA) (i.e. Level of intellectual performance)
20
30
50
70