Before revision:  We use ABCD data set around 11,000 samples cortical thickness and cognitive scores to analysis their association , both from mean and dispersion aspects. Using double generalized linear model, the mean model results is almost the same as generalized linear model, we found crystallized intelligenceare more associated with cortical thickness than fluid intelligence in adolescents around 10 years old.
After revision:  We use ABCD data set around 11,000 samples cortical thickness and their association with intelligence were estimated using double generalized linear model, the mean model results is almost the same as generalized linear model, we found crystallized intelligenceare more associated with cortical thickness than fluid intelligence in adolescents around 10 years old.