EFFECTIVENESS OF REDUNDANT COLOR CODING IN MULTIDIMENSIONAL IDENTIFICATION

This study investigated the effectiveness of redundant color coding in multidimensional identification. Statistical analysis showed that red undant color in multidimensional identification did not necessarily im prove performance and response speed might even deteriorate if subject s were not informed of the use of redundant color. Merely informing su bjects of the use of redundant color might not benefit identification speed either; subjects had to actually use color in responding to faci litate response speed. Further, redundant color might be more appropri ate to associate with the less-salient or the less-familiar stimulus a ttribute. Implications of the results for the design of multidimension al display and for human information processing were discussed.