The International Affective Picture System (IAPS) is a widely used database of standardized images that evoke various affective responses, such as emotions and feelings. Developed by psychologists at the University of Florida, particularly by Peter Lang and his colleagues, the IAPS serves as a tool for researchers studying emotion and affective responses. The images in the IAPS are selected to represent a broad range of emotional valences (positive, negative, neutral) and arousal levels (high to low).

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