We have designed a novel computer controlled environment that elicits emotions in subjects while they are uttering short identical phrases. The paradigm is based on Damasio's experiment for eliciting apprehension and is implemented in a voice activated computer game. For six subjects we have obtained recordings of dozens of identical sentences, which are coupled to events in the game - gain or loss of points. Prosodic features of the recorded utterances were extracted and classified. The resultant classifier gave 78-85% recognition of presence/absence of apprehension.