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Abstract We run a survey experiment to investigate the effectiveness of social norms in promoting the support to migrants. We design an intervention that presents different social norms regarding other's behaviour and attitude towards migrants and we test their influence on behavioural outcomes with respect to a control where social information is not provided. We explore the channel(s) through which a manipulation of social information is successful in affecting behaviour. The number of migrants moving from one country to another is bound to increase, and a considerable fraction of these flows will try to access the European countries. At the same time, public opinion towards immigration is often negative. A supportive public approach has many advantages, as it can facilitate an efficient management of the migration flows and improve the integration of migrants in our societies. Building on a theoretical model, we study a set of experimental treatments aimed at promoting support to immigration through a mechanism based on social norms. Our intervention consists of presenting a favourable social norm prevailing among the members of an "ingroup" (the natives) and test its effectiveness in reducing the social distance between a subject belonging to the ingroup and the "outgroup" (the migrants). Receiving a favourable social norm is expected to deliver a clear sign that peers of the ingroup are not against migrants, ultimately affecting behaviour.
Trial Start Date August 27, 2019 September 01, 2020
Trial End Date August 31, 2019 October 31, 2020
Last Published August 29, 2019 08:41 AM April 23, 2020 10:42 AM
Intervention Start Date August 28, 2019 September 30, 2020
Intervention End Date August 29, 2019 October 31, 2020
Experimental Design (Public) We plan to conduct an incentivized survey and recruit British participants through the online platform Prolific Academic. Respondents in the treatment groups will receive information on the social norm, namely on what other respondents did before them in terms of donation to a charity operating in favour of migrants. Moreover, to understand to what extent the social norm is effective in changing donations per se, or due to its capability to convey information on the ingroup attitude towards the outgroup, we will also design a treatment where we directly provide information on the ingroup (favourable) attitude towards the outgroup. In the Control treatment respondentswill not receive any information on previous respondents’ behaviour or attitude. We plan to conduct an incentivized survey and recruit Italian participants. We will employ a survey firm to collect data for a representative sample of respondents with respect to socio-demographic characteristics. Respondents in the treatment groups will receive information on the social norm, namely on what other respondents did before them in terms of donation to a charity operating in favour of migrants. Moreover, to understand to what extent the social norm is effective in changing donations per se, or due to its capability to convey information on the ingroup attitude towards the outgroup, we will also design a treatment where we directly provide information on the ingroup (favourable) attitude towards the outgroup. In the Control treatment respondentswill not receive any information on previous respondents’ behaviour or attitude.
Randomization Method Even randomization between subjects, in the different groups, done by the software used (qualtrics). Even randomization between subjects, in the different groups, done by the commercial firm employed for data collection.
Planned Number of Observations 4'400 individuals 5250 individuals
Sample size (or number of clusters) by treatment arms 1'100 1'050
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PAP_depositato_norma_April_2020.pdf
MD5: e1e89e5ec4c3faf6562496d4291d5b4c
SHA1: 1e10b332b51da80fd265a9394e0b4b7dcf1bbf6a
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PAP_depositato.pdf
MD5: 4bbd725358950ecd268210a5028f915a
SHA1: 397c27196c9d01230581c7cb805ddb025dba391d
Title PAP
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