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  • 1
    Online Resource
    Online Resource
    Informing Migration Policies : A Data Primer (2014)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (60 p)
    Edition: 2014 World Bank eLibrary
    Parallel Title: Carletto, Calogero Informing Migration Policies
    Abstract: Researchers in many fields, such as demography, economics, and sociology, have established various data collection methodologies and principles to answer a range of academic and policy questions on migration. Although the progress has been impressive, some basic challenges remain. This paper addresses some basic, yet fundamental, questions on identification of international migrants and how their various demographic, personal, and human capital characteristics are captured via different data sources. The critical issues are the construction of proper sampling frames in censuses, registers, and surveys and the design of questionnaires in household, labor market, and other relevant surveys. The paper discusses how these data sources can be used to answer policy questions in areas such as labor markets, education, or poverty. The focus is on how some of the existing shortcomings in availability, quality, and relevance of migration data can be overcome via improvements in data collection methods
    DOI: 10.1596/1813-9450-7082
    URL: Volltext  (Deutschlandweit zugänglich)
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    Online Resource
    MPI Ethno. Forsch.
  • 2
    Online Resource
    Online Resource
    Fact or Artefact : The Impact of Measurement Errors on the Farm Size - Productivity Relationship (2011)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (24 p)
    Edition: 2011 World Bank eLibrary
    Parallel Title: Carletto, Calogero Fact or Artefact
    Abstract: This paper revisits the role of land measurement error in the inverse farm size and productivity relationship. By making use of data from a nationally representative household survey from Uganda, in which self-reported land size information is complemented by plot measurements collected using Global Position System devices, the authors reject the hypothesis that the inverse relationship may just be a statistical artifact linked to problems with land measurement error. In particular, the paper explores: (i) the determinants of the bias in land measurement, (ii) how this bias varies systematically with plot size and landholding, and (iii) the extent to which land measurement error affects the relative advantage of smallholders implied by the inverse relationship. The findings indicate that using an improved measure of land size strengthens the evidence in support of the existence of the inverse relationship
    DOI: 10.1596/1813-9450-5908
    URL: Volltext  (Deutschlandweit zugänglich)
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    Online Resource
    MPI Ethno. Forsch.
  • 3
    Online Resource
    Online Resource
    From Guesstimates to GPStimates : Land Area Measurement and Implications for Agricultural Analysis (2013)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (29 p)
    Edition: 2013 World Bank eLibrary
    Parallel Title: Carletto, Calogero From Guesstimates to GPStimates
    Abstract: Land area measurement is a fundamental component of agricultural statistics and analysis. Yet, commonly employed self-reported land area measures used in most analysis are not only potentially measured with error, but these errors may be correlated with agricultural outcomes. Measures employing Global Positioning Systems, on the other hand, while not perfect especially on smaller plots, are likely to provide more precise measures and errors less correlated with agricultural outcomes. This paper uses data from four African countries to compare the use of self-reported and Global Positioning Systems land measures to (1) examine the differences between the measures, (2) identify the sources of the differences, and (3) assess the implications of the different measures on agricultural analysis focusing on the inverse productivity relationship. The results indicate that self-reported land areas systematically differ from Global Positioning Systems land measures and that this difference leads to potentially biased estimates of the relationship between land and productivity
    DOI: 10.1596/1813-9450-6550
    URL: Volltext  (Deutschlandweit zugänglich)
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    MPI Ethno. Forsch.
  • 4
    Article
    Article
    Measuring migration in multi-topic household surveys (2012)
    In:  Handbook of research methods in migration (2012), Seite 207-228 | year:2012 | pages:207-228
    Details
    ISBN: 1781005427
    Language: Undetermined
    Titel der Quelle: Handbook of research methods in migration
    Publ. der Quelle: Cheltenham [u.a.] : Elgar, 2012
    Angaben zur Quelle: (2012), Seite 207-228
    Angaben zur Quelle: year:2012
    Angaben zur Quelle: pages:207-228
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    Article
    MPI Ethno. Forsch.
  • 5
    Article
    Article
    Measuring migration in multi-topic household surveys (2012)
    In:  Handbook of research methods in migration 2012, S. 207-228
    Details
    Language: English
    Titel der Quelle: Handbook of research methods in migration
    Angaben zur Quelle: 2012, S. 207-228
    Note: Calogero Carletto, Alan de Brauw and Raka Banerjee
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    Article
    Frobenius-Institut
  • 6
    Article
    Article
    Informing migration policies : a data primer (2014)
    In:  International handbook on migration and economic development (2014), Seite 9-41 | year:2014 | pages:9-41
    Details
    ISBN: 1782548068
    Language: English
    Titel der Quelle: International handbook on migration and economic development
    Publ. der Quelle: Cheltenham [u.a.] : Edward Elgar, 2014
    Angaben zur Quelle: (2014), Seite 9-41
    Angaben zur Quelle: year:2014
    Angaben zur Quelle: pages:9-41
    Keywords: Internationale Migration ; Wanderungsstatistik ; Statistische Methode ; Aufsatz im Buch
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    Article
    MPI-MMG
  • 7
    Online Resource
    Online Resource
    Land Fragmentation, Cropland Abandonment, and Land Market Operation in Albania (2012)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (31 p)
    Edition: 2012 World Bank eLibrary
    Parallel Title: Klaus Deininger Land Fragmentation, Cropland Abandonment, and Land Market Operation in Albania
    Abstract: Albania's radical farmland distribution is credited with averting an economic crisis and social unrest during the transition. But many believe it led to a holding structure too fragmented to be efficient, and that public efforts to consolidate plots are needed to lay the foundation for greater rural productivity. This paper uses farm-level data from the 2005 Albania Living Standards Measurement Survey to explore this quantitatively. The analysis finds no support for the argument that fragmentation reduces productivity. However, producers fail to utilize about 10 percent of the country's productive land, and, in the majority of cases, this land has been idle for at least five years. Farmers quote inefficiently-small plots as the reason for this in few cases, casting doubt on the scope for land consolidation to solve this issue. Instead, the data are consistent with the notion of land market imperfections, which can be traced to gaps in the legal and policy framework, as well as inefficiencies in registry operations, leading to land abandonment on a large scale. To maintain the productive potential of Albania's rural economy and, if and when needed, the ability to conduct consolidation in a cost-effective and sustainable manner, it will be critical to complement the emphasis on consolidation with an effort to address those gaps and inefficiencies on a priority basis
    DOI: 10.1596/1813-9450-6032
    URL: Volltext  (Deutschlandweit zugänglich)
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    MPI Ethno. Forsch.
  • 8
    Online Resource
    Online Resource
    Can Diaries Help Improve Agricultural Production Statistics : Evidence from Uganda (2011)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (25 p)
    Edition: 2011 World Bank eLibrary
    Parallel Title: Deininger, Klaus Can Diaries Help Improve Agricultural Production Statistics
    Abstract: Although good and timely information on agricultural production is critical for policy-decisions, the quality of underlying data is often low and improving data quality could have a high payoff. This paper uses data from a production diary, administered concurrently with a standard household survey in Uganda to analyze the nature and incidence of responses, the magnitude of differences in reported outcomes, and factors that systematically affect these. Despite limited central supervision, diaries elicited a strong response, complemented standard surveys in a number of respects, and were less affected by problems of respondent fatigue than expected. The diary-based estimates of output value consistently exceeded that from the recall-based production survey, in line with reported disposition. Implications for policy and practical administration of surveys are drawn out
    DOI: 10.1596/1813-9450-5717
    URL: Volltext  (Deutschlandweit zugänglich)
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    MPI Ethno. Forsch.
  • 9
    Online Resource
    Online Resource
    Missing(ness) in Action : Selectivity Bias in GPS-Based Land Area Measurements (2013)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (31 p)
    Edition: 2013 World Bank eLibrary
    Parallel Title: Kilic, Talip Missing(ness) in Action
    Abstract: Land area is a fundamental component of agricultural statistics, and of analyses undertaken by agricultural economists. While household surveys in developing countries have traditionally relied on farmers' own, potentially error-prone, land area assessments, the availability of affordable and reliable Global Positioning System (GPS) units has made GPS-based area measurement a practical alternative. Nonetheless, in an attempt to reduce costs, keep interview durations within reasonable limits, and avoid the difficulty of asking respondents to accompany interviewers to distant plots, survey implementing agencies typically require interviewers to record GPS-based area measurements only for plots within a given radius of dwelling locations. It is, therefore, common for as much as a third of the sample plots not to be measured, and research has not shed light on the possible selection bias in analyses relying on partial data due to gaps in GPS-based area measures. This paper explores the patterns of missingness in GPS-based plot areas, and investigates their implications for land productivity estimates and the inverse scale-land productivity relationship. Using Multiple Imputation (MI) to predict missing GPS-based plot areas in nationally-representative survey data from Uganda and Tanzania, the paper highlights the potential of MI in reliably simulating the missing data, and confirms the existence of an inverse scale-land productivity relationship, which is strengthened by using the complete, multiply-imputed dataset. The study demonstrates the usefulness of judiciously reconstructed GPS-based areas in alleviating concerns over potential measurement error in farmer-reported areas, and with regards to systematic bias in plot selection for GPS-based area measurement
    DOI: 10.1596/1813-9450-6490
    URL: Volltext  (Deutschlandweit zugänglich)
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  • 10
    Online Resource
    Online Resource
    Reliability of Recall in Agricultural Data (2011)
    Washington, D.C : The World Bank
    Details
    Language: English
    Pages: Online-Ressource (29 p)
    Edition: 2011 World Bank eLibrary
    Parallel Title: Beegle, Kathleen Reliability of Recall in Agricultural Data
    Abstract: Despite the importance of agriculture to economic development, and a vast accompanying literature on the subject, little research has been done on the quality of the underlying data. Due to survey logistics, agricultural data are usually collected by asking respondents to recall the details of events occurring during past agricultural seasons that took place a number of months prior to the interview. This gap can lead to recall bias in reported data on agricultural activities. The problem is further complicated when interviews are conducted over the course of several months, thus leading to recall of variable length. To test for such recall bias, the length of time between harvest and interview is examined for three African countries with respect to several common agricultural input and harvest measures. The analysis shows little evidence of recall bias impacting data quality. There is some indication that more salient events are less subject to recall decay. Overall, the results allay some concerns about the quality of some types of agricultural data collected through recall over lengthy periods
    DOI: 10.1596/1813-9450-5671
    URL: Volltext  (Deutschlandweit zugänglich)
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