Tag
spillover_effects
15 findings
Labour & employmentDisplacement Externalities in Active Labor Market ProgramsMandatory job search assistance increased participant exit rates from unemployment by 17.9% to 20% (p < 0.01), but reduced nonparticipant exit rates by 4.8% to 5.0% overall (p < 0.10) and by 7.9% in South Jutland (p < 0.05). At three months, nonparticipants were 2.7 percentage points less likely to find employment (p < 0.05).RCTLabour & employmentDisplacement-Free Social Network Spillover BoundariesLocal treatment saturation within 300m cluster boundaries produced zero localized job displacement; because workers commute across the integrated urban market, peer spillovers operate via social network information sharing rather than localized zero-sum job reallocation.RCTLabour & employmentDouble-Sided Randomization DesignPlacing 1.398 formal apprentices per firm displaced only 0.318 traditional apprentices, creating a net gain of 1.080 total apprentices per firm (p < 0.0001); net job creation was bounded between 74.1% and 77.3% of formal positions placed.RCTEconomics (general)General Equilibrium Program Evaluation Gap in Scaled InterventionsMarketing insurance exclusively to cultivators reduces drought wages for landless laborers by 0.63 log points at the 30th percentile of rainfall, demonstrating that partial-equilibrium evaluations miss severe welfare losses among non-treated groups.RCTEconomics (general)Indirect Wage-Mediated Insurance ExternalitiesA 10% increase in the proportion of wage laborers offered insurance raises village wages by 24.7% in payout states. Insured laborers receiving payouts worked 15.4 fewer days and had a 28.5 percentage point lower labor market participation rate than uninsured peers.RCTHealthAbsence of Within-School Cross-Classroom SpilloversSpillover students exhibited non-significant knowledge improvements of 0.015 SD at 1 week and 0.011 SD at 6 months, and non-significant attitude changes of 0.026 SD at 1 week and 0.022 SD at 6 months compared to pure control schools.RCTLabour & employmentLabor Market Displacement EffectAt eight months, untreated job seekers in treated communities were 2.1 percentage points less likely to obtain long-term employment than job seekers in communities where no counseling was offered, and in highly competitive job markets, untreated peers experienced a 7.7 percentage point drop in employment relative to pure comparison areas.RCTMethods & evidenceMarket Tightness InvarianceSupply-side windfall ($\omega = 0.259$) and demand-side substitution ($\psi = 0.227$) were nearly equal ($\omega - \psi = 0.032$), and program scale relative to the broader labor market was under 10% (9.9% mean ratio), resulting in near-zero market tightness adjustment and validating control group spillover independence.RCTLabour & employmentRandomized Saturation Design for Network SpilloversModerate transport subsidy saturation (40%) generated positive indirect spillovers on untreated neighbors, raising formal employment by 6.2 percentage points (p < 0.10) and permanent employment by 6.4 percentage points (p < 0.05); high saturation (90%) produced negative spillovers on permanent work (-6.8 percentage points, p < 0.01).RCTDevelopmentLocal Geographic Distance and Business Practice Non-ContagionMinimum distance to a consulting tailor had no statistically significant effect on business practice adoption by control tailors (coefficient = -0.0304, p > 0.10), and the number of consulting tailors within 0.5 km similarly showed no significant spillover effect (coefficient = 0.00779, p > 0.10).RCTLabour & employmentRandomized Saturation Spillover DynamicsAverage indirect spillover effects on untreated neighbors were statistically zero across employment (-4.6 percentage points, p > 0.10) and earnings (-41.1 ETB, p > 0.10), proving that search interventions at this scale do not displace non-treated youth in integrated urban labor markets.RCTSociety & networksPeer Social Network Spillover in Industrial CohortsResearch is ongoing with results forthcoming; study design tracks spillover mechanisms and the bi-directional link between mental health and social network creation.RCTLabour & employmentStratified Partial Likelihood for Externality IdentificationParticipation in the activation program reduced non-participants' unemployment exit hazard rate by approximately 5% ($\gamma = -0.048$, p < 0.10 in full covariate model; $\gamma = -0.079$, p < 0.05 in South Jutland sub-sample).Observational StudyLabour & employmentTwo-Step Cluster Randomization DesignWhile individuals offered counseling were 2.5 percentage points more likely to find long-term employment after eight months than untreated peers in the same communities, untreated peers in treated communities were 2.1 percentage points less likely to find jobs than job seekers in pure comparison communities where 0% were treated.RCTMethods & evidenceWithin-Firm Spillover Dilution ControlRemoving multi-establishment corporate branches prevented internal information spillovers, maintaining orthogonal treatment variation across 7,438 independent establishments.RCT