In this article, we provide an overview of the performance-based tests that measure decoding accuracy for sender’s states and traits, which is a critical aspect of interpersonal communication. We discuss the components of interpersonal communication, the role of basic skills, such as decoding in interpersonal communication, and the importance of accurate decoding. Next, we introduce the variety of nonverbal cue and the targeted concept of decoding, the cultural influences on decoding, and the issues in methodology used to measure decoding accuracy. Then, we review existing performance-based tests that measure decoding accuracy based on the cultural background of the stimulus person. We also present the available nonverbal cues, decoding targets, test reliability and validity, and findings from studies using these tests. Finally, we identify the necessity for developing tests that use Japanese as stimulus persons as an issue in measuring decoding accuracy and for investigating the determinants of decoding accuracy, such as knowledge and motivation, after a proper measurement of decoding accuracy.
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