IAPS stands for International Affective Picture System, a standardized set of pictures used to elicit emotions in psychological research. There are several synonyms for IAPS, including emotional pictures or stimuli, affective imagery, and mood-inducing visuals. These synonyms reflect the purpose of IAPS in measuring the emotional response to images in a scientific context. The use of synonyms for IAPS helps researchers to convey their ideas and findings more effectively, and helps to ensure consistency in the scientific community. Regardless of the term used, IAPS remains a valuable tool in the study of emotion and its effects on behavior and cognition.