The Nencki Affective Picture System (NAPS) consists of 1.356 realistic, high-quality photographs that are divided into five categories (people, faces, animals, objects, and landscapes). Affective ratings were collected from 204 mostly European participants. The pictures were rated according to valence, arousal, and approach-avoidance dimensions using computerized bipolar semantic slider scales. Validation of the ratings was obtained by comparing them to ratings generated using the Self-Assessment Manikin (SAM) and the IAPS. In addition, physical properties of the photographs are reported, including luminance, contrast, and entropy. The new database, with accompanying ratings and image parameters, allows researchers to select a variety of visual stimulus materials specific to their experimental questions of interest.
The NAPS system is freely accessible to the scientific community for noncommercial use by request at http://naps.nencki.gov.pl.
NAPS should be cited as follows:
• Marchewka, A., Żurawski, Ł., Jednoróg, K., & Grabowska, A. (2014). The Nencki Affective Picture System (NAPS): Introduction to a novel, standardized, wide-range, high-quality, realistic picture database. Behavior Research Methods, 46(2), 596-610.
Animals_004_v, Animals_007_h, Animals_012_h, Animals_031_h, Animals_033_h, Animals_041_h, Animals_099_h, Animals_115_h, Faces_048_h, Faces_050_h, Female_002_h, Female_009_h, Female_012_v, Female_018_h, Female_019_h, Female_020_v, Female_023_h, Female_024_v, Female_couple_009_v, Female_couple_010_h, Female_couple_011_v, Female_couple_015_h, Female_couple_023_h, Female_couple_031_v, Female_couple_033_h, Female_couple_041_h, Male_003_v, Male_005_v, Male_008_v, Male_014_v, Male_016_v, Male_017_v, Male_020_v, Male_022_v, Male_023_v, Male_024_h, Male_couple_002_h, Male_couple_004_v, Male_couple_009_v, Male_couple_019_h, Male_couple_031_h, Male_couple_047_h, Objects_006_h, Objects_121_v, Objects_122_h, Objects_125_h, Objects_127_h, Objects_139_h, Objects_164_h, Objects_209_h, Opposite-sex_couple_001_v, Opposite-sex_couple_005_h, Opposite-sex_couple_008_h, Opposite-sex_couple_009_h, Opposite-sex_couple_012_h, Opposite-sex_couple_025_h, Opposite-sex_couple_030_v, Opposite-sex_couple_033_v, People_023_h, People_048_h, People_058_h, People_090_v, People_202_h, People_207_v, People_212_h, People_214_h, People_216_h, People_221_h, People_222_h, People_228_h, People_231_h, People_233_h, People_234_h, People_239_h, People_247_v