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”
I have not been blogging as diligently lately, and one of the reasons for this is that I have been a bit preoccupied with writing resubmissions. As part of this process, I had to revisit the issue of treatment effect consistency which I discussed last summer. This post discusses an alternative way of assessing and quantifying whether treatment effect (in)consistency is present, using methods adopted from meta-analysis.
I have been conducting online experiments with MTurk and other similar online platforms for almost four years now. I usually leave a little feedback box at the end of each experiment, where participants can share their thoughts, make some comments, and potential complaints about the study. I have found this a very useful tool, especially during the piloting of the experiments, where many attentive respondents have pointed out several typos and other mistakes over the years. Continue reading “A 32-year old White Alabamian man* and the luxury of quantitative criminology”
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”