Listeners very quickly form impressions of a person from their voice: Is someone old or young? Trustworthy or untrustworthy? Do we think they are a nice person? I will present behavioural and electrophysiological evidence to examine how these very first impressions from voices are formed. First impressions can be formed rapidly, within less than a second of exposure. Impressions of physical characteristics of a person, such as age and gender seem to be formed first, with inferred characteristics, such as trustworthiness or educatedness, following later