This year the Annual Meeting of the American Society of Criminology took place in San Francisco. On Thursday I was asked to present in and chair the ‘Experiments in Policing and Sentencing’ session. I was discussing how block-randomised experiments should be assessed to ascertain that the average treatment effects are unbiased and interpretable. You can find my presentation after the page break. Next week I will also share my second presentation.Continue reading “Presentation at the Annual Meeting of the ASC 1.”
The manifesto of the UK’s children’s commissioner has just been published, which called for police units to be added to schools. In the criminology community, several people called this out arguing that continued police presence in schools could foster the criminalisation of youthful escapades and mischief.
While I agree that teachers should not rely on Bobbies to enforce school regulation , a limited police presence could be beneficial to increase trust and boost cooperation. Or could it? In a recently started research project funded by the Physical Social Health and Economics (PSHE) Association and the National Police Chiefs’ Council (NPCC), this is what we try to figure out.Continue reading “Should there be police presence in schools?”
I was honoured to be invited by Kohei Watanabe and Atsushi Tago to give a talk this Wednesday at Waseda University in Tokyo. Upon their request, I was discussing my paper, which is currently under the second round of peer review at the Journal of Quantitative Criminology, from a methodological perspective. Readers of this blog should be familiar with these techniques (for details see the following thread of posts), for which I have already made available the code and the data to encourage future replications. You can find my presentation below, after the page break.Continue reading “Presentation at Waseda University”
Our ESRC project – From coercion to consent: social identity, legitimacy, and a process model of police procedural justice (CONSIL) – had its first workshop this Thursday, on 28th February. It was an excellent opportunity to discuss our research with team members from other universities and to get feedback from officers of various police forces. Jonathan Jackson and I also gave a presentation on the experimental branch of the project and virtual reality (VR) experimentation in particular.Continue reading “CONSIL workshop and ‘Experiments in VR’ presentation”
This final post finishes the discussion of the previous three (you can find them here, here, and here) by looking at treatment effect heterogeneity and design heterogeneity.
Continue reading “Scotcet and implementation failure 4. – Treatment effect and design heterogeneity with a demonstration in R”
This post continues two earlier ones (this one and this one) and assesses the effect consistency across the matched pairs in the ScotCET dataset. Part of the redacted dataset can be downloaded at the bottom of this page which will allow you to carry out the same analysis presented below. Continue reading “ScotCET and implementation failure 3. – Treatment effect consistency in a blocking design with a demonstration in STATA”
How can one evaluate the veracity of the claim made by MacQueen and Bradford (2017), that the treatment effect emerging from the ScotCET RCT is, in fact, attributable to the experimental design, despite the apparent failure of implementation? For this assessment, one needs to discuss some design features of ScotCET. Continue reading “ScotCET and implementation failure 2. – The design features of ScotCET”
As outlined in my earlier post, one of the key propositions in the procedural justice literature is that – at least in most Western countries – procedural justice has an outsized importance in shaping views regarding the police. Yet, there have been only a few studies that established a causal relationship between police practices and the perception of procedural justice (e.g., Lowrey et al., 2016; Sahin et al., 2016), and none, that has explored its mediating role (although see Mazerolle et al. (2013) who used a path analysis approach – more on this in another post). Thus, in my first paper, I decided to “pry open” the black box of causality, and investigate procedural justice’s causally mediating role. Continue reading “ScotCET and implementation failure 1. – An apparent implementation failure”