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Policy

GUNS LEAD TO GUN VIOLENCE

Hanns-Jürgen Hodann
There have now been a number of scientific research papers that confirm that an increase in the access to firearms leads to an increase of gun violence. Here is what one research paper concluded:

''Results. Gun ownership was a significant predictor of firearm homicide rates (incidence rate ratio = 1.009; 95% confidence interval = 1.004, 1.014). This model indicated that for each percentage point increase in gun ownership, the firearm homicide rate increased by 0.9%.''

In 2011 there were 11, 101 people that died because of gun violence in the US. However, during the same period only 17 died from acts of terrorism. The Casual Loop Diagram tries to illustrate the process and dynamic that could be behind this unacceptably high number of victims. Is there not a moral dimension to this horrific number of victims that demands immediate action to disrupt this vicious reinforcing circle?

URL of the study:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3828709/

Gun Violence Policy

  • 2 years 8 months ago

Version 10: Hattie Calibrated Education Scenario Tool Capability Demonstration

Yolande Tra
Despite a mature field of inquiry, frustrated educational policy makers face a crisis characterized by little to no clear research-based guidance and significant budget limitations --  in the face of too often marginal or unexpectedly deleterious achievement impacts. As such, education performance has been acknowledged as a complex system and a general call in the literature for causal models has been sounded. This modeling effort represents a strident first step in the development of an evidence-based causal hypothesis: an hypothesis that captures the widely acknowledged complex interactions and multitude of cited influencing factors. This non-piecemeal, causal, reflection of extant knowledge engages a neuro-cognitive definition of students.  Through capture of complex dynamics, it enables comparison of different mixes of interventions to estimate net academic achievement impact for the lifetime of a single cohort of students. Results nominally capture counter-intuitive unintended consequences: consequences that too often render policy interventions effete. Results are indexed on Hattie Effect Sizes, but rely on research identified causal mechanisms for effect propagation. Note that the net causal interactions have been effectively captured in a very scoped and/or simplified format.  Relative magnitudes of impact have been  roughly adjusted to Hattie Ranking Standards (calibration): a non-causal evidence source. This is a demonstration model and seeks to exemplify content that would be engaged in a full or sufficient model development effort.  Budget & time constraints required significant simplifying assumptions. These assumptions mitigate both the completeness & accuracy of the outputs. Features serve to symbolize & illustrate the value and benefits of causal modeling as a performance tool.

Education Policy Causal Dynamic Intervention Impact

  • 1 year 4 months ago

DRAFT Lincoln Chafee Policy Analyis

Steve Wallis
This page provides a structural analysis of POTUS Candidate Lincoln Chafee. The method used is Integrative Propositional Analysis (IPA) available: ​http://scipolicy.org/uploads/3/4/6/9/3469675/wallis_white_paper_-_the_ipa_answer_2014.12.11.pdf

IPA Policy

  • 4 years 4 months ago

Dynamics of Radicalization

Robert L. Brown
This model blends insights from several research based sources to establish an initial capture or causal hypothesis.   The initial, presumed structures and influences captures the dominant research-reported threads, elements and dynamics as relate to radicalization and, conversely: legitimization & state stability.

Policy Causal Dynamic Intervention Impact

  • 2 years 6 months ago

Version 8B: Calibrated Student-Home-Teachers-Classroom-LEA-Spending

Robert L. Brown
This version 8B of the CAPABILITY DEMONSTRATION model. A net Benefit ROI has been added. The Compare results feature allows comparison of alternative intervention portfolios.  Note that the net causal interactions have been effectively captured in a very scoped and/or simplified format.  Relative magnitudes and durations of impact remain in need of further data & adjustment (calibration). In the interests of maintaining steady progress and respecting budget & time constraints, significant simplifying assumptions have been made: assumptions that mitigate both completeness & accuracy of the outputs.  This model meets the criteria for a Capability demonstration model, but should not be taken as complete or realistic in terms of specific magnitudes of effect or sufficient build out of causal dynamics.  Rather, the model demonstrates the interplay of a minimum set of causal forces on a net student progress construct -- as informed and extrapolated from the non-causal research literature. Provided further interest and funding, this  basic capability model may further developed and built out to: higher provenance levels -- coupled with increased factorization, rigorous causal inclusion and improved parameterization.

Education Policy Causal Dynamic Intervention Impact

  • 2 years 7 months ago

Version 6A NULL PRACTICE Student-Home-Teachers-Classroom

Robert L. Brown
This version of the CAPABILITY DEMONSTRATION model has been further calibrated (additional calibration phases will occur as better standardized data becomes available).  Note that the net causal interactions have been effectively captured in a very scoped and/or simplified format.  Relative magnitudes and durations of impact remain in need of further data & adjustment (calibration). In the interests of maintaining steady progress and respecting budget & time constraints, significant simplifying assumptions have been made: assumptions that mitigate both completeness & accuracy of the outputs.  This model meets the criteria for a Capability demonstration model, but should not be taken as complete or realistic in terms of specific magnitudes of effect or sufficient build out of causal dynamics.  Rather, the model demonstrates the interplay of a minimum set of causal forces on a net student progress construct -- as informed and extrapolated from the non-causal research literature. Provided further interest and funding, this  basic capability model may further de-abstracted and built out to: higher provenance levels -- coupled with increased factorization, rigorous causal inclusion and improved parameterization.

Education Policy Causal Dynamic Intervention Impact

  • 2 years 8 months ago

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