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Do crises erode trust in government? To answer this question, we leverage the quasi-experimental setting of the sharply increased military threat to the neutral country of Switzerland during the two world wars as an exogenous shock. In doing so, we exploit a unique feature of Swiss politics: government issuance of pre-referenda voting recommendations. We use constituent adherence to government recommendations as a behavioral proxy for trust in government, measured in real time prior to, during, and after the crisis. Our empirical estimates provide strong evidence that constituents are significantly less likely to follow governmental voting recommendations during wartime.

"Only a limited number of effectiveness studies have been performed to study the benefits of efficacious behavior problems prevention programs for children when implemented through national health service systems. This study uses a quasi-experimental design to test the effectiveness of the school-based PATHS prevention program (Providing Alternative Thinking Strategies) when implemented through Dutch municipal health services by health promotion professionals. A sample of 1,294 children was followed for two years: 674 children attending nine schools providing PATHS and 620 children in nine comparison schools. The authors hypothesized finding an intervention effect of PATHS in terms of a significant reduction in teacher- and student-rated externalizing and internalizing problem behaviors, and a significant improvement in teacher-, student-, and peer-rated social skills and emotional skills. In fact, the results show low levels of program implementation and no intervention effects on problem behavior or social and emotional skills, suggesting that it is hard to reproduce positive intervention effects where an efficacious social-emotional prevention program is implemented through a national health service. More research is needed on the specific conditions required to implement efficacious programs effectively." (author's abstract)

Abstract
This paper describes a quasi-experimental evaluation of a reform in Israel ('EMUN'), which attempted to institutionalize problem-oriented policing on a national scale. The current study examines the effect of this reform on tackling traffic disturbance and road bullying offences. We compared three police stations that chose to deal with traffic offences using the tools and techniques provided through the reform (treatment stations) with five police stations that were matched - using a specially designed algorithm - on several criteria, including similar trends of traffic offences (comparison stations). Each treatment station was compared to two comparison stations using a difference-in-differences approach. In five out of six comparisons there were large and significant reductions in documented traffic disturbances in the targeted areas of the treatment stations compared to the control stations. We also found evidence of significant diffusions in crime control benefits in two of the treatment stations. However, there was evidence of significant geographical displacement to the buffer zone in the largest treatment stations. We attribute this to differences in the nature of the areas targeted and discuss the relative harms and benefits. The findings of the study show that institutionalizing a variety of evidence-based policing strategies has a promise not only for classic crimes (such as property and violence), but also for incivilities and quality-of-life offenses.

An argument against the legalization of the cannabis market is that such a policy would increase crime. Exploiting the recent staggered legalization enacted by the states of Washington (end of 2012) and Oregon (end of 2014) we show, combining difference-in-differences and spatial regression discontinuity designs, that recreational cannabis caused a significant reduction of rapes and thefts on the Washington side of the border in 2013-2014 relative to the Oregon side and relative to the pre-legalization years 2010-2012.

The Belgian electorate has the possibility not only to decide on the number of seats for the different parties, but also to appoint the members of parliament. By making insufficient use of the preferential vote, the electorale however denies itself the power to choose members of parliament. In a quasi-experiment the difference in the selection of members by the political parties and by the electorale is examined for the period 1949-1987. The Difference is small, tending to lower the more the electorate use the preferential vote, which is the key to that autonomous selection. A puzzling result, which can be understood taking into account that the growth of the preferential vote is nearly exclusively given to or attrackted by the candidates leading the party lists. A striking illustration of the difficult emancipation of the electorate.

AbstractWe study how agents adapt their behaviour to variations of incentives in dynamic contests. We investigate a real dynamic contest with large stakes: professional tennis matches. Situations in which balls bounce very close to the court's lines are used as the setting of a quasi-experiment providing random variations in winning probability. We find evidence of a momentum effect for men whereby winning a point has a positive causal impact on the probability to win the next one. This behaviour is compatible with a reaction to the asymmetry of incentives between leaders and followers. We do not find momentum for women.

Scholars who work with time series quasi‐experiments have identified "publicity" as a problem in the interpretation of such research designs. The present study utilizes three examples of the role of publicity in three social interventions: the Romanian abortion restriction of 1966; the British breathalyzer crackdown; and, the 1978 Georgia Status Offender Act. The authors conclude that publicity is most likely to be a problem in internal validity when (1) the intervention is not truly abrupt and (2) a broad "policy" is evaluated as opposed to a "program."

West Papua was granted Special Autonomy status in 2008 as mandated by Government Regulation No.1/2008. Special Autonomy Law has granted more or less than 30 percent of education Special Autonomy Funds for West Papua. Thus, this study evaluates the impact of Special Autonomy Law on education attainment in Indonesia. We use panel data sets of 33 regions in Indonesia that covers the period of 2001 to 2018. We employ quasi-experiment analysis, specifically the Difference-in-difference (DID) analysis in evaluating before and after effect of Special Autonomy Law in West Papua. We further develop fixed-effect model (FEM) panel data analysis in understanding the impact of Special Autonomy Law on education by controlling socioeconomic and demographic variables. DID analysis in this study suggests that Special Autonomy Law appears to worsen education attainment in West Papua. This study further found that despite positive and significant effect of education spending share on education attainment, it appears that the realization of education spending in West Papua is relatively low. Keywords: Special Autonomy Law, Education Attainment, Education Spending Share, DID, FEM

Only a limited number of effectiveness studies have been performed to study the benefits of efficacious behavior problems prevention programs for children when implemented through national health service systems. This study uses a quasi-experimental design to test the effectiveness of the school-based PATHS prevention program (Providing Alternative THinking Strategies) when implemented through Dutch municipal health services by health promotion professionals. A sample of 1,294 children was followed for two years: 674 children attending nine schools providing PATHS and 620 children in nine comparison schools. We hypothesized finding an intervention effect of PATHS in terms of a significant reduction in teacher- and student-rated externalizing and internalizing problem behaviors, and a significant improvement in teacher-, student-, and peer-rated social skills and emotional skills. In fact, the results show low levels of program implementation and no intervention effects on problem behavior or social and emotional skills, suggesting that it is hard to reproduce positive intervention effects where an efficacious social-emotional prevention program is implemented through a national health service. More research is needed on the specific conditions required to implement efficacious programs effectively. Adapted from the source document.