The purpose of this experiment was to examine correlations among encoding ability, decoding ability, and individual differences. Thirty undergraduates were measured on the CPI10 (short version of California Personality Inventory), Y-G Personality Inventory, and assessed for their ability to encode and decode facial and vocal expressions depicting six different emotions. The main findings were as follows: (a) encoding scores were positively correlated with both CPI10 and Y-G; (b) decoding score was correlated with CPI10 and negatively correlated with Y-G; (c) there was no correlation between encoding and decoding score on vocal expression or facial expression; and (d) there was no sex difference.