title: Two-year stability of the late positive potential across middle childhood and adolescence.
abstract: The late positive potential (LPP) may be a useful measure of individual differences in emotional processing across development, but little is known about the stability of the LPP across time. We assessed the LPP and behavioral measures of emotional interference following pleasant, unpleasant, and neutral images in 8- to 13-year-old youth. Approximately two years later, the same participants completed the task again (N=34). Results indicated that the LPP is moderately-to-highly reliable across development. Stability was lower and more inconsistent for behavioral measures. In addition, consistent with previous cross-sectional analyses, a decrease in occipital activity was observed at the second assessment. Results indicate that the LPP appears to be a stable measure of emotional processing, even across a fairly large period of development.
authors.affiliation: Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, USA. Electronic address: autumn.kujawa@stonybrook.edu.
authors.forename: Autumn
authors.initials: A
authors.lastname: Kujawa
authors.forename: Daniel N
authors.initials: DN
authors.lastname: Klein
authors.forename: Greg Hajcak
authors.initials: GH
authors.lastname: Proudfit
mesh_terms: D000293:Adolescent; D001288:Attention / Q000502:physiology*; D001931:Brain Mapping; D002648:Child; D002657:Child Development / Q000502:physiology*; D003430:Cross-Sectional Studies; D004569:Electroencephalography; D004644:Emotions / Q000502:physiology*; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010775:Photic Stimulation; D011930:Reaction Time
keywords: Development; Emotion; Event-related potentials; Late positive potential; Reliability