The pie chart model, or autism wheel, also acknowledges that autistic people's symptoms may change and develop through time, and allows for a fluid development over the life span. 1 In a clear ...

N. E. Breslow, D. G. Clayton, Approximate Inference in Generalized Linear Mixed Models, Journal of the American Statistical Association, Vol. 88, No. 421 (Mar., 1993), pp. 9-25 ... covering a wide ...

We tend to think of spectrums in terms of a linear progression—from high to low, moderate to severe, 1 to 10, or good to bad. Indeed, ASD is currently categorised into levels 1, 2, and 3.