This study proposes a novel method to analyze divergent thinking from a temporal perspective in the Alternative Uses Test (AUT). Focus is placed on fluency and flexibility in 30-second intervals. The fluency is measured by the number of responses, while the flexibility, assessing the quality of ideas, is measured to utilize a new approach incorporating natural language processing. An experiment with 32 students yielded data suggesting a terminal effect in AUT performance, with increased fluency and flexibility observed in the last 30 to 60 seconds of trials. This methodology offers a detailed insight into the impact of changing environmental conditions and stimuli on creative performance over time.