Official quarterly research journal of the Society for Chaos Theory in Psychology & Life Sciences since 1997. NDPLS publishes original theory and empirical research on attractors, bifurcations, chaos, fractals, solitons, catastrophes, self-organization processes and emergence, power law distributions, cellular automata, agent-based models, genetic algorithms, agent-based models, social and neural networks, with application to problems encountered in psychology, biology, management, economics and other social and life sciences. All articles are refereed. NDPLS is indexed in PsycINFO, Medline, Econlit, Scopus, ScienceDirect, MathSciNet, and Web of Science. NDPLS welcomes article submissions from the scientific community at any time of year, in addition to any particular calls for special issues or the annual art feature, which have their own timetables. SCTPLS and NDPLS use the traditional subscription system, and there are no page, production, or review charges to authors. Please see the menu options (left) for further details. Journal Citation Reports (by Clarivate Analytics, 2018) indicates that our 2-year Impact Factor for 2017 is 2.045, up substantially over last year. Our new 5-year Impact Factor is 1.713. Please see "Indexes and Citations" for further information. FREE DOWNLOADS FROM 2016 (Vol. 21). SCTPLS is pleased to offer everyone in the cyberworld two free downloads from the 2016 volume year. Use them -- share with colleagues -- keep your students busy with something important. (Reposting to other web sites is not permitted however.) You can read all the abstracts and make your selections from: View Abstracts & Articles. Any items that are already marked as 'free' do not count against your two free downloads through this special offer. You will be asked to complete a quick interactive login before the downloading starts. Single articles in PDF and single issues are available. See menu at left for how to order. We would also like to take this opportunity to recommend the special issues listed below. Potential authors are welcome and encouraged to respond to open calls. Manuscripts for regular issues are welcome all year round.