Aging norms for IAPS stimulus set

• Picture rating study: 57 younger and 48 older adults rated 48 pictures each from the same four emotional categories: arousing positive (12 pictures), arousing negative (12 pictures), non-arousing positive (12 pictures), non-arousing negative (12 pictures). There were two different sets of pictures; half of the participants saw Set 1 and the rest saw Set 2 (meaning we have ratings for 96 pictures in total, with each picture having been rated by at least 24 people). Both sets contained equal numbers of pictures in each emotional category and mean arousal and valence were equated across sets for each of the four categories. Participants made their ratings on the self-assessment manikin, just as in Bradley, Lang, and Cuthbert (2008). Lang, P.J., Bradley, M.M., &amp; Cuthbert, B.N. (2008). International affective picture system (IAPS): Affective ratings of pictures and instruction manual. Technical Report A-8. University of Florida, Gainesville, FL.<br><br>

• 图片评分实验：招募57名青年成年人与48名老年成年人，每名参与者对48张图片开展评分。所有图片均归属4类情绪类别：唤醒正性图片（12张）、唤醒负性图片（12张）、非唤醒正性图片（12张）、非唤醒负性图片（12张）。本实验包含两套独立图片集，半数参与者使用图片集1，剩余参与者使用图片集2；最终共获取96张图片的评分数据，且每张图片至少获得24名参与者的评分。两套图片集在每类情绪类别下的图片数量完全一致，且四类情绪类别的平均唤醒度与效价在两套图片集中均保持匹配。参与者采用自我评定小人量表（self-assessment manikin）完成评分，实验范式参考Bradley、Lang与Cuthbert（2008）的研究。

Lang, P.J., Bradley, M.M., & Cuthbert, B.N. (2008). 国际情感图片系统（International Affective Picture System, IAPS）：图片情感评分与指导手册。技术报告A-8。佛罗里达大学，盖恩斯维尔，佛罗里达州。