In order to establish a method to measure the cognitive capacity to reconstruct from incomplete data original data explainable by correspondence to brain function, to apply these results to conduct research on brain function and in the future to select and determine the suitability of training appropriate to each individual, and to contribute to early detection, etc. of diseases related to cognitive function such as Alzheimer type dementia, [a configuration] is made such that: a degraded image, which is an image for which specified processing has been conducted on an original image having a significant photographic object and the data for recognizing said photographic object has been degraded, is displayed to a subject; the fact that said photographic object has been recognized is received from the subject; the recognition time, which is the time required for the subject to recognize said photographic object, is calculated based on these received results; and the cognitive capacity score, which is an index that digitizes the cognitive capacity of the subject by specified computations, is calculated from this recognition time and the challenge level data, which is data related to the challenge level of said degraded image in conjunction with the recognition of the photographic object.
Cognitive capacity measurement device and method