Listeners get an idea of the personality of the speaker through his voice -- ScienceDailyRatings of perceived personality were highly consistent among listeners regardless of the language in which voices were evaluated. That is, listeners agree in their judgments of whether a given voice sounds aggressive or confident. This suggests that there must be certain invariant properties of the voice that indicate how trustworthy or competent a person is. This is in line with the idea that we can train ourselves to sound more or less competent, more or less dominant, depending on the context (e.g., job interviews). After hearing just one word, listeners rapidly create a social voice space, where voices are grouped according to two main dimensions, one emphasizing traits of valence (trustworthiness, warmth) and other emphasizing strength (dominance, aggressiveness). These two personality dimensions are very relevant and respond to evolutionary pressures. Obtaining information about the intent of the others helps individuals to appropriately evaluate whether to approach or to avoid interaction with others.