Gollin figure test
The Gollin figures test is a psychological test used to assess someone's visual perception. Subjects are shown pictures of common objects: namely five consecutive incomplete line drawings for each picture, from least to most complete, that the subjects need to mentally complete to identify the object drawn. On a retention test sometime later, however, subjects identify the image sooner than they did on the first test, indicating some form of memory for the image. Amnesiac subjects also show improvement on this test, even though they do not recall taking the test before. Original test In 1960, Eugene S. Gollin investigated the level of completeness that people need to recognize incomplete images and studied how training can change this threshold. For the test he selected common objects known by kindergarten children. Methods Gollin conducted four experiments. In experiment I, 53 children aged 30–65 months and a comparison group of 20 adults were recruited. The test consisted in a series of 11 objects [bell, bird, birthday cake, chair, cow, fish, goose, horse, table (viewed from above and from below), umbrella] each drawn five times (set I, II, III, IV and V) with black ink on a white card and every time with