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Author (up) Morales-Bader, D.; Castillo, R.D.; Cox, R.F.A.; Ascencio-Garrido, C. doi  openurl
  Title Parliamentary roll-call voting as a complex dynamical system: The case of Chile Type
  Year 2023 Publication Plos One Abbreviated Journal PLoS One  
  Volume 18 Issue 4 Pages  
  Keywords RECURRENCE QUANTIFICATION ANALYSIS; TIME; NETWORK; WORLD  
  Abstract A method is proposed to study the temporal variability of legislative roll-call votes in a parliament from the perspective of complex dynamical systems. We studied the Chilean Chamber of Deputies' by analyzing the agreement ratio and the voting outcome of each vote over the last 19 years with a Recurrence Quantification Analysis and an entropy analysis (Sample Entropy). Two significant changes in the temporal variability were found: one in 2014, where the voting outcome became more recurrent and with less entropy, and another in 2018, where the agreement ratio became less recurrent and with higher entropy. These changes may be directly related to major changes in the Chilean electoral system and the composition of the Chamber of Deputies, given that these changes occurred just after the first parliamentary elections with non-compulsory voting (2013 elections) and the first elections with a proportional system in conjunction with an increase in the number of deputies (2017 elections) were held.  
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  ISSN 1932-6203 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000984779900028 Approved  
  Call Number UAI @ alexi.delcanto @ Serial 1819  
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Author (up) Vasquez-Pinto, S.; Morales-Bader, D.; Cox, R.F.A.; Munoz-Rubke, F.; Castillo, R.D. doi  openurl
  Title The nonlinearity of pupil diameter fluctuations in an insight task as criteria for detecting children who solve the problem from those who do not Type
  Year 2023 Publication Frontiers in Psychology Abbreviated Journal Front. Psychol.  
  Volume 14 Issue Pages 1129355  
  Keywords insight problem solving; entropy; fractal scaling; self-organization; pupil diameter fluctuations; 8-coin task  
  Abstract Insights, characterized by sudden discoveries following unsuccessful problem-solving attempts, are fascinating phenomena. Dynamic systems perspectives argue that insight arises from self-organizing perceptual and motor processes. Entropy and fractal scaling are potential markers for emerging new and effective solutions. This study investigated whether specific features associated with self-organization in dynamical systems can distinguish between individuals who succeed and those who fail in solving insight tasks. To achieve this, we analyzed pupillary diameter fluctuations of children aged 6 to 12 during the 8-coin task, a well-established insight task. The participants were divided into two groups: successful (n = 24) and unsuccessful (n = 43) task completion. Entropy, determinism, recurrence ratio, and the & beta; scaling exponent were estimated using Recurrence Quantification and Power Spectrum Density analyses. The results indicated that the solver group exhibited more significant uncertainty and lower predictability in pupillary diameter fluctuations before finding the solution. Recurrence Quantification Analysis revealed changes that went unnoticed by mean and standard deviation measures. However, the & beta; scaling exponent did not differentiate between the two groups. These findings suggest that entropy and determinism in pupillary diameter fluctuations can identify early differences in problem-solving success. Further research is needed to determine the exclusive role of perceptual and motor activity in generating insights and investigate these results' generalizability to other tasks and populations.  
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  Series Volume Series Issue Edition  
  ISSN 1664-1078 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:001023703700001 Approved  
  Call Number UAI @ alexi.delcanto @ Serial 1847  
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