At this initial visit [in April 2008] we did some standard tests of memory and thinking processes. The tests predicted that Terry had, as expected, an above-average IQ. His scores on most of the tests were absolutely normal, scoring 29 out of 30 on one of the standard tests. More detailed testing showed very minor mistakes in memory, normal judgment and attention, but some clear mistakes in perception and drawing.
The drawings from that first visit are shown in the [top figure above]. In the top drawing, Terry is trying to copy the two intersecting pentagons and to leave a four-sided diamond figure in the middle, but this is slightly incorrect. Below, he is copy a spiral which has one loop missing, while the bottom picture is meant to be reproduced as a 3D drawing of a house–although the drawing is quite good, it is clearly not in three dimensions. In addition, at this visit he was able to draw a clock face and put all the numbers in, but made a mistake at setting the hands to a specific time.
…
Over time, his testing did deteriorate, as can be seen from the drawings from July 2010 [in the second figure above], which contrast with his drawings from 2008. But this time his drawing of the clock face was clearly highly abnormal and his writing was also very poor.
–Professor Roy Jones, Director of RICE (taken from “Terry Pratchett: His World”)
(I posted many illustrations drawn and painted by Pratchett earlier in my content posts from this book but I want to include another one in this post to show how starkly it contrasts with the PCA tests above, because it’s also a black and white ink drawing:
It’s an elven horseman Pratchett drew in 1971. My photos are terrible because it is spread across two pages in the book but I think you get the idea.
We all know PTerry was a writer, and Professor Jones says repeatedly in his chapter that it took quite some time before his skill with words and expressing himself with them began to deteriorate because of the PCA. But Pratchett was also a visual artist, and unfortunately that skill was one of the first things he started losing.)
Saw the first two drawings at an exhibition a few years ago. I never realised how badly his mind had been affected and it broke my heart. Truly awful for anyone, but especially someone with such a great mind. RIP Sir Terry.
















