Tag
field_experiments
7 findings
Methods & evidenceActive Tracking Attrition MitigationAttrition was maintained at 3.4% to 7.7% across most study arms (except Vadodara Year 1 at 17-18% due to communal riots), with attritor pretest scores showing no significant difference between treatment and control groups.RCTLabour & employmentCasual-Labor Field-Laboratory Screening ProxyReplicated real-world day-labor market conditions where 91 percent of participants were active labor force participants and 45 percent had made real job referrals, achieving a 72 percent return rate (N = 407 referrals) with robust experimental control over financial and screening incentives.RCTMethods & evidenceCross-Sample Intervention ReplicabilityKey treatment effects replicated across both cohorts with striking consistency: persistent choice of challenging tasks increased by 8.5 percentage points in Sample A (p < 0.01) and 12.9 percentage points in Sample B (p < 0.01); week-ahead commitment increased by 14.3 percentage points in Sample A (p < 0.01) and 19.1 percentage points in Sample B (p < 0.01); and second-visit success increased by 8.7 percentage points in Sample A (p < 0.01) and 10.7 percentage points in Sample B (p < 0.05).RCTEducationDistrict-Level Structural Heterogeneity in Experimental ComplianceFirst-stage compliance coefficients ranged from 0.744 in Dallas and 0.517 in Charlotte-Mecklenburg down to 0.157 in New York and -0.079 (non-significant) in Denver. Low compliance in Denver stemmed from structural language certification rules requiring Spanish-speaking students to remain with Spanish-certified teachers.RCTEconomics (general)Hawthorne Effect Control via Diagnostic-Only Counterfactual DesignControl plants achieved only a 12 percentage point increase in management practice adoption (versus 37.8 percentage points in treatment plants) and exhibited no significant reduction in quality defects or major productivity gains, confirming that observer presence alone did not drive performance improvements.RCTMethods & evidenceShift-Isolated Educational Unit PartitioningValidated shift-level experimental independence across 13 multi-shift facilities without cross-shift contamination or social interaction overlap.RCTMethods & evidenceTwo-Wave Strategic Baseline SuspensionWave 2 branch co-location resolved baseline refusal challenges, allowing enrollment to reach 8,248 total migrants and successfully retaining 4,458 participants.Observational Study