Aging norms for IADS stimulus set

Sound rating study: 24 younger (ages 18-30) and 24 older adults (ages 60-77) rated 45 IADS sounds from each of four emotional categories: arousing positive (14 sounds), arousing negative (8 sounds), non-arousing positive (9 sounds), and non-arousing negative (14 sounds). Order of presentation of the sounds was randomized. The ratings were made on the self-assessment manikin (Lang, 1980) which allows participants to rate each sound on its arousal, valence, and dominance (just as in Bradley &amp; Lang, 2007). Participants indicate how the sound makes them feel by bubbling in a circle underneath the appropriate face on a gradient (e.g. smiling to frowning), which is then converted to a score out of 9 (higher scores indicate that the sound was more arousing or more pleasant) <br><br>Bradley, M. M., &amp; Lang, P. J. (2007). The international affective digitized sounds (; IADS-2): Affective ratings of sounds and instruction manual. University of Florida, Gainesville, FL, Tech.Rep.B-3.<br>Lang, P. J. (1980). Self-assessment manikin. <i>Gainesville, FL: The Center for Research in Psychophysiology, University of Florida</i>.<br>