Writing in 2001, Dr Michael Fitzgerald disputes the claim of schizophrenia, saying that Wain more likely had Autistic Spectrum Disorder (ASD). Of particular note, Fitzgerald indicates that while Wain's art took on a more abstract nature as he grew older, his technique and skill as a painter did not diminish, as one would expect from a person with schizophrenia. Elements of visual agnosia (the inability to recognize certain objects, even though a person can recall them if asked), moreover, are demonstrated in his painting. If Wain did have visual agnosia, it might have manifested itself as extreme attention to detail.