Shape and Color Coding: Recall Efficiency

In the paper we study the recall efficiency in operators working with visual information: ability to remember geometric shapes and colors. We conducted an experiment in which an operator had to process the visually presented information in short-term memory in order to reproduce it in the future. The results of the experiment showed equal probability of errors when recalling colors and shapes. We also managed to distinguish two groups of geometric shapes in which there is high probability of interference. The first group consists: triangle, four-pointed star, and five-pointed star; the second: circle, rectangle, oval, and square.