Correlation Dimensions of Human-Generated Random Numbers

We tried to approach the random number generation test as an application of chaos analysis. The randomness of numbers was well represented by their correlation dimensions calculated by Judd's method. We tried four methods of random number generation, and two of them (writing and verbal) measured the activity of creating randomness in numbers. The other two methods, which input the numbers to the computers directly, measured the activity of creating randomness in space. The comparison of age dependencies indicated that creating randomness in space is easier than that in numbers.