nep-nud New Economics Papers
on Nudge and Boosting
Issue of 2026–08–24
two papers chosen by
Marco Novarese, Università degli Studi del Piemonte Orientale


  1. When Digital Nudges Nag : Evidence on Program Take-up from a WhatsApp Intervention By Urbina Florez, Maria Jose; Moya, Andrés; Rozo, Sandra
  2. Targeting Support Using Job Seekers' Biases: A Randomized Experiment By Bruno Cr\'epon; Aur\'elien Frot; Christophe Gaillac

  1. By: Urbina Florez, Maria Jose; Moya, Andrés; Rozo, Sandra
    Abstract: This paper studies a randomized controlled trial in which undocumented Venezuelan migrants in Colombia were assigned to receive informational videos via WhatsApp encouraging registration in a regularization program. The intervention backfired. Receiving a video reduced take-up by 8 percentage points, a 15 percent decline relative to the control mean. The negative effect operated through two channels. Among individuals who watched, exposure to procedural content discouraged registration. Among those who did not engage, unsolicited contact itself reduced take-up. Both effects were concentrated among individuals at the margin of the decision to participate. These findings challenge the assumption that well-designed informational nudges are, at worst, neutral.
    Date: 2026–06–30
    URL: https://d.repec.org/n?u=RePEc:wbk:wbrwps:11423
  2. By: Bruno Cr\'epon; Aur\'elien Frot; Christophe Gaillac
    Abstract: Most digital job-search assistance encourages unemployed workers to broaden their search toward related occupations, targeting one important source of search inefficiency: insufficient occupational diversification. Our analysis suggests that the relevant margin of adjustment depends on the underlying search problem. Building on a detailed analysis of job seekers' beliefs and search behavior, we identify a large group of pessimistic workers for whom the main constraints are low search effort and low aspirations, rather than insufficient occupational diversification. This diagnosis points to an unexpected intervention: rather than encouraging these workers to search in new occupations, we encourage them to search more intensively and apply for better-paying jobs within the occupations they already consider. We evaluate this diagnosis-based intervention, alongside a standard occupational recommendation, in a large-scale randomized experiment conducted with the French Public Employment Service. The motivational intervention increases search effort, raises reservation wages, and improves reemployment outcomes along the predicted margins. Occupational recommendations, by contrast, primarily benefit workers whose search problem lies in the allocation of attention across occupations and operate by activating existing perceptions rather than correcting beliefs. More broadly, our findings show how digital platforms can combine subjective expectations, behavioral data, targeted interventions, and randomized experimentation to diagnose job seekers' needs and iteratively improve intervention design.
    Date: 2026–08
    URL: https://d.repec.org/n?u=RePEc:arx:papers:2608.16849

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