Abstract: Techniques are described for speech analysis for cross-language mental state identification. A first group of utterances in a first language is collected, on a computing device, with an associated first set of mental states. The first group of utterances and the associated first set of mental states are stored on an electronic storage device. A machine learning system is trained using the first group of utterances and the associated first set of mental states that were stored. A second group of utterances from a second language is processed, on the machine learning system that was trained, wherein the processing determines a second set of mental states corresponding to the second group of utterances. The second set of mental states is output. A series of heuristics is output, based on the correspondence between the first group of utterances and the associated first set of mental states.