Distinct intelligence quotient groups have been established earlier from the score of the Raven Progressive Matrices. 
Raven Progressive Matrices
Classification of intelligence quotient via brainwave sub-band power ratio features and artificial neural network.This paper elaborates on the novel intelligence assessment method using the brainwave sub-band power ratio features.  The features are used as input to the artificial neural network.  Subsequently, the brain behaviour model has been developed using an artificial neural network that is trained with optimized learning rate, momentum constant and hidden nodes. 
artificial neural network