{"status":"OK","data":{"id":673106,"identifier":"JDP6VJ","persistentUrl":"https://doi.org/10.34894/JDP6VJ","protocol":"doi","authority":"10.34894","separator":"/","publisher":"DataverseNL","publicationDate":"2026-09-15","storageIdentifier":"surf://10.34894/JDP6VJ","effectiveDatasetFileCountLimit":10000,"datasetFileUploadsAvailable":9999,"datasetType":"dataset","locks":[],"latestVersion":{"id":35320,"datasetId":673106,"datasetPersistentId":"doi:10.34894/JDP6VJ","datasetType":"dataset","storageIdentifier":"surf://10.34894/JDP6VJ","versionNumber":1,"internalVersionNumber":22,"versionMinorNumber":0,"versionState":"RELEASED","latestVersionPublishingState":"RELEASED","productionDate":"2025-08-31","lastUpdateTime":"2026-09-15T11:48:57Z","releaseTime":"2026-09-15T11:48:57Z","createTime":"2026-09-04T12:21:10Z","publicationDate":"2026-09-15","citationDate":"2026-09-15","effectiveDatasetFileCountLimit":10000,"datasetFileUploadsAvailable":9999,"termsOfUse":"The dataset is classified as closed access, and the underlying data are not publicly accessible. The published record provides metadata only. No terms of use or licensing information for the underlying data are specified in this record.","restrictions":"This is a closed dataset. The data are not available for re-use due to the risk of participant re-identification and restrictions arising from the terms of participant consent. Requests for access or re-use cannot therefore be considered. The depositor may be contacted for further information.","fileAccessRequest":true,"metadataBlocks":{"citation":{"displayName":"Citation Metadata","name":"citation","fields":[{"typeName":"title","multiple":false,"typeClass":"primitive","value":"PACES MMC Longitudinal Data 2024"},{"typeName":"alternativeTitle","multiple":true,"typeClass":"primitive","value":["PACES MMC Longitudinal"]},{"typeName":"author","multiple":true,"typeClass":"compound","value":[{"authorName":{"typeName":"authorName","multiple":false,"typeClass":"primitive","value":"Ficcarelli, Teo"},"authorAffiliation":{"typeName":"authorAffiliation","multiple":false,"typeClass":"primitive","value":"Mixed Migration Center"},"authorIdentifierScheme":{"typeName":"authorIdentifierScheme","multiple":false,"typeClass":"controlledVocabulary","value":"ORCID"},"authorIdentifier":{"typeName":"authorIdentifier","multiple":false,"typeClass":"primitive","value":"0000-0001-7246-1701"}}]},{"typeName":"datasetContact","multiple":true,"typeClass":"compound","value":[{"datasetContactName":{"typeName":"datasetContactName","multiple":false,"typeClass":"primitive","value":"Ficcarelli, Teo"},"datasetContactAffiliation":{"typeName":"datasetContactAffiliation","multiple":false,"typeClass":"primitive","value":"Mixed Migration Center"}}]},{"typeName":"dsDescription","multiple":true,"typeClass":"compound","value":[{"dsDescriptionValue":{"typeName":"dsDescriptionValue","multiple":false,"typeClass":"primitive","value":"

Dataset Description

\nThis dataset was collected by the Mixed Migration Centre for the PACES project funded by the EU. This Longitudinal dataset was collected by calling back respondents who had been interviewed at baseline and had accepted to be recontacted 6 months later. Respondents were called back 6 months after the first interview (data in sheet Longi1), and then again another 6 months later (data in sheet Longi2). In consists of 261 interviews, 172 at first call back and 89 at second call back. Respondents were interviewed in Italy and Niger at baseline but could be located elsewhere during call backs.\n\n

Background

\nThis dataset is one of the key components of the PACES project, which aimed to understand how people decide to migrate, stay (or return for migrants). In particular, PACES sought to understand how people perceive major changes in society, how they understand their past-present and future, and how these factors influence their aspirations to stay or migrate. This dataset provides information on how people's aspirations to stay, migrate or return may change along the migration journey.\n\n

Purpose

\nThe data capture whether and how people's decision-making at different stages of their migration journeys change. More specifically, this dataset gathers evidence on how migrants along the journey make decisions and change plans after being exposed to new experiences (positive and negative) or new information accessed during their journey.\n\n

Data Collection and Methods

\nThe data in this dataset were collected through a survey questionnaire. \n\n

Research Limitations

\nItaly: The longitudinal sample is structurally constrained by the low consent rate at baseline: with only 177 individuals agreeing to be recontacted out of 503, the pool available for follow-up was limited from the outset, making it difficult to absorb further attrition across two rounds. The gender distribution in the longitudinal sample (approximately 67% male, 33% female) mirrors the baseline composition closely. However, respondents who refused to provide contact details at baseline may differ systematically from those who consented, introducing a potential self-selection bias in the longitudinal sample that limits its representativeness of the broader baseline cohort.\n\nNiger: The longitudinal sample is structurally constrained by the low longitudinal survey targets (50-60) compared to the high number of respondents who consented to be recontacted following baseline interviews. Project budget constraints prevented us from enlarging the longitudinal sample size, meaning less data was collected than was methodologically possible or ideal. \n\n

Data Structure and Relationships Between Files

\nEach row in the Excel files corresponds to a respondent, which has a match in the baseline data, which is stored separately. \n\n

Value of the data for potential reuse

\nThis dataset has high value as it records people's perspectives on life at various points in time and in their migration journey. This dataset is of great value to migration scholars studying migration decision-making. \n\n

Results

\nAt the moment, these data have been used for infographic materials that are publicly available. \n\n

Conclusion

\nThis dataset has high value, particularly when used in combination with the baseline data. However, considering that journeys are unique, this data is also very sensitive as it may be possible to identify participants. \n\n

\n

Access status :

\nClosed Access
\n\n

Data availability :

\nThe dataset is not accessible.
\n          \n          \n           The repository record provides metadata only about the dataset.
"},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-08-25"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Social Sciences"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"migration aspiration"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"migration decision-making"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"migration journey"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"lived experiences"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"migration policies"}}]},{"typeName":"topicClassification","multiple":true,"typeClass":"compound","value":[{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"migration"}}]},{"typeName":"language","multiple":true,"typeClass":"controlledVocabulary","value":["English"]},{"typeName":"producer","multiple":true,"typeClass":"compound","value":[{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"Ficcarelli, Teo"},"producerAffiliation":{"typeName":"producerAffiliation","multiple":false,"typeClass":"primitive","value":"Mixed Migration Centre"},"producerAbbreviation":{"typeName":"producerAbbreviation","multiple":false,"typeClass":"primitive","value":"DRC-MMC"}}]},{"typeName":"productionDate","multiple":false,"typeClass":"primitive","value":"2025-08-31"},{"typeName":"productionPlace","multiple":true,"typeClass":"primitive","value":["Italy","Niger"]},{"typeName":"grantNumber","multiple":true,"typeClass":"compound","value":[{"grantNumberAgency":{"typeName":"grantNumberAgency","multiple":false,"typeClass":"primitive","value":"Horizon Europe"},"grantNumberValue":{"typeName":"grantNumberValue","multiple":false,"typeClass":"primitive","value":"101094279"}}]},{"typeName":"depositor","multiple":false,"typeClass":"primitive","value":"Vezzoli, Simona"},{"typeName":"dateOfDeposit","multiple":false,"typeClass":"primitive","value":"2026-09-04"},{"typeName":"timePeriodCovered","multiple":true,"typeClass":"compound","value":[{"timePeriodCoveredStart":{"typeName":"timePeriodCoveredStart","multiple":false,"typeClass":"primitive","value":"2024-11-01"},"timePeriodCoveredEnd":{"typeName":"timePeriodCoveredEnd","multiple":false,"typeClass":"primitive","value":"2025-08-31"}}]},{"typeName":"dateOfCollection","multiple":true,"typeClass":"compound","value":[{"dateOfCollectionStart":{"typeName":"dateOfCollectionStart","multiple":false,"typeClass":"primitive","value":"2024-11-01"},"dateOfCollectionEnd":{"typeName":"dateOfCollectionEnd","multiple":false,"typeClass":"primitive","value":"2025-08-31"}}]},{"typeName":"kindOfData","multiple":true,"typeClass":"primitive","value":["Survey data"]},{"typeName":"series","multiple":true,"typeClass":"compound","value":[{"seriesName":{"typeName":"seriesName","multiple":false,"typeClass":"primitive","value":"PACES"},"seriesInformation":{"typeName":"seriesInformation","multiple":false,"typeClass":"primitive","value":"PACES - Making migration and migration policy decisions amidst societal transformations – is a 40-month Horizon Europe project (grant agreement 101094279) that seeks to produce knowledge on the processes of migration decision-making and enhance EU migration policy."}}]},{"typeName":"software","multiple":true,"typeClass":"compound","value":[{"softwareName":{"typeName":"softwareName","multiple":false,"typeClass":"primitive","value":"Excel files"}}]},{"typeName":"relatedMaterial","multiple":true,"typeClass":"primitive","value":["Questionnaires"]},{"typeName":"relatedDatasets","multiple":true,"typeClass":"primitive","value":["PACES Residents and Migrants in Algeria","PACES Residents and Migrants in Nigeria","PACES Residents and Migrants in Ethiopia","PACES MMC Baseline Data 2024"]},{"typeName":"dataSources","multiple":true,"typeClass":"primitive","value":["Migrants en route in Niger and Italy"]},{"typeName":"accessToSources","multiple":false,"typeClass":"primitive","value":"Closed Access — the information provided includes people who are migrating irregularly and could be identified. 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