Abstract: Aspects of the disclosure are directed to objective diagnosis of neurobehavioral disorders. In accordance with one aspect, the disclosure includes performing a spectral analysis on a Laplacian formatted electroencephalograph (EEG) data to generate a spectral coherence data; performing a plurality of regression analysis on the spectral coherence data to generate a smoothed spectral coherence data; performing a principal component analysis (PCA) on the smoothed spectral coherence data to generate an orthogonalized spectral coherence data; and performing a multivariate discriminant function analysis (DFA) on the orthogonalized spectral coherence data to generate a plurality of diagnostic rules and a diagnosis.