Tag
phone_surveys
2 findings
Methods & evidenceHawthorne Effect Mitigation in Phone SurveysStandardized fortnightly phone surveys collected reliable longitudinal search data without generating detectable Hawthorne or priming effects, preserving true treatment-control contrast across survey rounds.Observational StudyDevelopmentHigh-Frequency Phone Panel MethodologyFortnightly phone surveys maintained low monthly attrition rates (ranging between 2% and 6%) and reliably captured short-run fortnightly spikes in search intensity (+12.5% during transport subsidy weeks) without generating Hawthorne measurement effects.Observational Study