Delavande, Adeline
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Publication Mortality Risk Information, Survival Expectations and Sexual Behaviors(2020-01-29) Ciancio, Alberto; Delavande, Adeline; Kohler, Hans-Peter; Kohler, Iliana V.Individuals in low-income settings are often overly pessimistic about their own survival, suggesting that better knowledge about survival risks might encourage investments in health. This paper provides evidence from a randomized experiment that provided mature adults aged 45+ in Malawi with information about mortality risks. Treated individuals are less likely to engage in risky sexual practices one year after the intervention, and they increase other forward-looking behaviors such as investments in agriculture. Expectations of HIV+ people living longer, which makes the pool of potential partners riskier, are a primary driver of reduced sexual risk taking in response to the intervention.Publication Correcting Pessimistic Mortality Beliefs May Reduce Vaccine Hesitancy, Malawi Study Shows(2024-09-11) Purcell, Helene; Ciancio, Alberto; Mwera, James; Delavande, Adeline; Mwapasa, Victor; Kohler, Hans-PeterHelping people accurately understand their risk of dying or surviving may support public health campaigns years later. A new strategy for improving health behavior is supported by a randomized controlled trial from the longrunning Malawi Longitudinal Study of Families and Health (MLSFH) that showed that a 2017 intervention to correct misconceptions about mortality risk was linked to higher COVID-19 vaccination rates five years later. Vaccination was 7.8 percentage points higher in the intervention than the control group. Effects spread to families of intervention participants, whose siblings had higher vaccination rates than the control group.