Jan Volín is Associate Professor at the Institute of Phonetics in Prague, where he started working in 1999, having previously lectured at the Faculty of Education at Charles University in Prague. His research interests focus on the sound structure of Czech and English, general issues of speech prosody, speech acquisition, and various pragmatic and psychological aspects of human speech behaviour. In addition to a great number of journal articles, he has published a book on the statistical analysis of phonetic data, and another on intonational downtrends in English.Radek Skarnitzl is Associate Professor at the Institute of Phonetics at Charles University in Prague, where he has been active since 2002. In his research, he has addressed several areas of speech communication. In addition to his interest in the sound patterns of Czech and English, he focuses on second language acquisition and socio-psychological aspects of speech communication, as well as forensic phonetics and idiosyncratic features in speech. He has published a number of journal articles, as well as a book on voicing patterns in Czech.