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PRWP

Reproducibility package for Conserving Wildlife through Demand Reduction and Supply Alternatives: Two Experiments in Restaurants in Kinshasa

2024
Reference ID
RR_COD_2024_223
DOI
https://doi.org/10.60572/g9ks-a898
Author(s)
Abdoulaye Cisse, Gabriel Englander, Daniel J. Ingram
Collections
World Bank Policy Research Working Papers
Metadata
JSON
Created on
Nov 15, 2024
Last modified
Jan 16, 2025
  • Project Description
  • Downloads
  • Overview
  • Reproducibility Package
  • Description
  • Scope and coverage
  • Disclaimer
  • Access and rights
  • Contacts
  • Information on metadata
  • Citation
  • Overview

    Abstract

    High aggregate levels of wildlife consumption in cities in Central Africa highlight the need for solutions that balance wildlife protection, local livelihoods, and the relational values between people and nature. This study explores the impacts of demand and supply-side interventions on wild meat consumption through two randomized control trials in restaurants in Kinshasa, Democratic Republic of the Congo: a demand-side experiment and a supply-side experiment. In the demand-side experiment, 544 subjects were given a coupon to their restaurant of choice and randomly assigned to view either a treatment video discouraging wildmeat consumption or a control video unrelated to wildmeat. Treatment group subjects are 31% less likely to order wild meat than control group subjects, though this difference is not statistically significant and may be affected by social desirability bias. In the supply-side experiment, we assessed the effect of randomly reducing the price of Moambe Chicken, a potential alternative to wild meat, on restaurants’ total wild meat sales. We estimate that a 1% reduction in the price of Moambe Chicken reduces total wild meat sales by 0.91%. Although this relationship is not statistically significant, it suggests that interventions increasing the availability and affordability of alternatives to wild meat may reduce wild meat consumption. Our experiments advance previous research by utilizing actual consumption data rather than self-reported data, assessing social desirability bias, and preregistering all statistical specifications to enhance research integrity. Policy implications: We provide preliminary evidence suggesting that both wild meat demand reduction through social marketing campaigns and supply expansion via affordable alternatives could contribute to effective wildlife conservation in Central Africa.

    Reproducibility Package

    Scripts
    Readme
    Link: https://reproducibility.worldbank.org/index.php/catalog/213/download/612/README.pdf
    Reproducibility package (code and data) for Conserving Wildlife through Demand Reduction and Supply Alternatives: Two Experiments in Restaurants in Kinshasa
    Title
    Reproducibility package (code and data) for Conserving Wildlife through Demand Reduction and Supply Alternatives: Two Experiments in Restaurants in Kinshasa
    Dependencies
    All R dependencies and their versions are listed in the file "renv.lock". The Stata code of the reproducibility package does not use dependencies.
    Notes
    Computational reproducibility verified by Development Impact (DIME) Analytics team, World Bank.
    Source code repository
    Repository name URI
    Reproducible Research Repository (World Bank) https://reproducibility.worldbank.org
    Software
    R
    Name
    R
    Version
    4.2.1
    Stata
    Name
    Stata
    Version
    18.0

    Reproducibility

    Technology environment

    Paper exhibits were reproduced on a computer with the following specifications:
    • OS: Windows 10 Enterprise, version 22H2
    • Processor: Intel(R) Xeon(R) Gold 6226R CPU @ 2.90GHz 2.90 GHz (2 processors)
    • Memory available: 128 GB
    • Software version: Stata 18.0 MP, R 4.2.1

    Technology requirements

    Runtime: 5 minutes

    Reproduction instructions

    Users should follow these instructions to reproduce the results:

    1. Download the datasets from the Microdata library.
    2. Change the global path in line 8 of "merge_survey_with_coupons.do" and run the do-file
    3. Open the RStudio project "bushmeat_demand.Rproj"
    4. Run the code "renv::init()" to initialize the renv environment and select option 1 to restore it from the lockfile
    5. Add a Google Maps API key in line 37 of make_figure1.R and activate that line for the code run
    6. In the same RStudio session, run all the scripts in the folder "scripts/make_data" in alphabetical order
    7. In the same RStudio session, run all the scripts in the folder "scripts/tables" in alphabetical order
    8. In the same RStudio session, run all the scripts in the folder "scripts/figures" in alphabetical order

    Data

    Datasets
    Data on restaurants sales for selected restaurants in Kinshasa
    Name
    Data on restaurants sales for selected restaurants in Kinshasa
    Note
    Source: Authors' data collection. Data was collected in November 2023 and anonymized for analysis and data publication. Data are located in the folder "data/raw_data", in the files: "restaurants_gps_ano.dta", "retaurants_menu_ano.xlsx", "sales_data_ano.xlsx".
    Access policy
    Data is forthcoming in the World Bank Microdata Library.
    Data on coupon assignment and attitudes towards wild meat consumption in Kinshasa
    Name
    Data on coupon assignment and attitudes towards wild meat consumption in Kinshasa
    Note
    Source: Authors' data collection. Data was collected in November 2023 and anonymized for analysis and data publication. Data are located in the folder "data/raw_data", in the files: "coupon_data_ano.xlsx", "survey_data_ano.dta".
    Access policy
    Data is forthcoming in the World Bank Microdata Library.
    Data statement

    All data sources are publicly available but not all are included in the reproducibility package.

    Description

    Output
    Conserving Wildlife through Demand Reduction and Supply Alternatives: Two Experiments in Restaurants in Kinshasa
    Type
    Working paper
    Title
    Conserving Wildlife through Demand Reduction and Supply Alternatives: Two Experiments in Restaurants in Kinshasa
    Description
    Policy Research Working Paper (PRWP) WPS11016
    URL
    http://documents.worldbank.org/curated/en/099908401072537544/IDU1e76413ef1d4e314f7a1a2da14d81137d49ee
    DOI
    https://doi.org/10.1596/1813-9450-11016
    Authors
    Author Affiliation Email
    Abdoulaye Cisse Agricultural and Resource Economics, University of California Berkeley cisse@berkeley.edu
    Gabriel Englander World Bank aenglander@worldbank.org
    Daniel J. Ingram Durrell Institute of Conservation and Ecology, University of Kent d.j.ingram@kent.ac.uk
    Date of production

    2024-11

    Scope and coverage

    Geographic locations
    Location Code
    Democratic Republic of the Congo COD
    Keywords
    wild meat consumption randomized controlled trials Central Africa

    Disclaimer

    Disclaimer

    The materials in the reproducibility packages are distributed as they were prepared by the staff of the International Bank for Reconstruction and Development/The World Bank. The findings, interpretations, and conclusions expressed in this event do not necessarily reflect the views of the World Bank, the Executive Directors of the World Bank, or the governments they represent. The World Bank does not guarantee the accuracy of the materials included in the reproducibility package.

    Access and rights

    License
    Name URI
    Modified BSD3 https://opensource.org/license/bsd-3-clause/

    Contacts

    Contacts
    Name Affiliation Email
    Gabriel Englander World Bank aenglander@worldbank.org
    Reproducibility WBG World Bank reproducibility@worldbank.org

    Information on metadata

    Producers
    Name Abbreviation Affiliation Role
    Reproducibility WBG DIME World Bank - Development Impact Department Verification and preparation of metadata
    Date of Production

    2024-11

    Document version

    1

    Citation

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