title: Some critical aspects of fractality research.
abstract: Numerous empirical studies identified fractal noise in human behavior.  According to the theory of Self Organized Criticality, long memory 1/f scaling  is a signature of stable and adaptive complex dynamical systems. This article  discusses the following aspects of fractality research: (a) generation of fractal  noise in simulation studies; (b) quality of some popular estimators of fractal  parameters; (c) measurement artifacts in cognitive performances. 36 time series  obtained in response tasks experiments under three different task conditions serve  as empirical basis.
authors.affiliation: Department of Psychology, University of Ulm, Albert-EinsteinAllee, Germany. tatjana.stadniski@uni-ulm.de
authors.forename: Tatjana
authors.initials: T
authors.lastname: Stadnitski
mesh_terms: D000328:Adult; D000465:Algorithms; D001245:Association Learning; D003071:Cognition; D003198:Computer Simulation; D004193:Discrimination Learning; D017709:Fractals; D006801:Humans; D008432:Mathematical Computing; D008606:Mental Processes; D008960:Models, Psychological; D009010:Monte Carlo Method; D017711:Nonlinear Dynamics; D009949:Orientation; D010364:Pattern Recognition, Visual; D011601:Psychophysics; D011930:Reaction Time; D012106:Research; D012153:Retention, Psychology