Comparison of different procedures for eliciting aroused psychophysiological state and emotions [presentation, pdf, 2534 kB]
Komidar L., Podlesek A., Sočan G., Bajec B., Bucik V., Mihelič F., Gajšek R., Štruc V.
First author's affiliation: Department of Psychology, Faculty of Arts, University of Ljubljana, Ljubljana, Slovenia
A lot of scientific effort is put lately in development of intelligent computer systems that would be able to extract some information from human speech in order to verify or determine the speaker's identity and assess his emotional state. Contemporary studies use different procedures to elicit emotion in participants that may be expressed in speech. Some studies put effort into evoking spontaneous emotional speech (e.g. the participants have to describe a certain situation that evoked their emotions in the past), whereas in others researchers use professional actors who are asked to perform and express an emotion through their verbal behaviour. We designed several laboratory situations in order to obtain speech recordings from which we could extract features characteristic of the aroused psychophysiological state or a certain emotion. The aim of our study was to examine which situation is most effective in evoking arousal or emotions in participants. We used the following situations: giving instructions to a different person in playing a computer game, and solving difficult cognitive tasks. We will present different situations for eliciting emotions and preliminary results regarding their efficiency, which was assessed by means of self-reported experiences, and comparison of speech characteristics in normal and aroused psychophysiological state.