Tasks Assigned to Missions in their Mandates

This page provides links to the data and metadata for Tasks Assigned to Missions in their Mandates (TAMM). TAMM provides data on the mandates of all UN peace operations deployed between 1948 and 2015.

TAMM version 2.1 is now available. You can download TAMM v.2.1 by clicking the links below.

Excel (.xls)

• TAMM v.2.1 mission-resolution version

• TAMM v.2.1 mission-month version

Stata data (.dta)

• TAMM v.2.1 mission-resolution version

• TAMM v.2.1 mission-month version

Comma separated values (.csv)

• TAMM v.2.1 mission-resolution version

• TAMM v.2.1 mission-month version

Other resources for v.2.1:

• Codebook (.pdf)

• Variable summary sheet (.xlsx)

• Summary of changes in v.2.1 (.pdf)

When using this dataset, please always cite the data presentation paper:

Lloyd, Gabriella. “New Data on UN Mission Mandates 1948–2015: Tasks Assigned to Missions in Their Mandates (TAMM).” Journal of Peace Research, (April 2021). https://doi.org/10.1177/0022343320980822.

• Read the paper (.pdf)

• Online appendix (.pdf)

• Replication materials

  • Code (.do)

  • Notice (May 4, 2021): TAMM v1 is out of date. Please use v2.1 instead. You can still download v1 by clicking these links:

    • TAMM v1 mission-resolution version (.dta)

    • TAMM v1 mission-month version (.dta)

  • Replication and expansion data

    • HKS APSR main dataset + TAMM v1 (.dta)

    • HKS APSR matched dataset + TAMM v1 (.dta)

Older versions of TAMM:

• Version 1

  • TAMM v1 mission-resolution version (.dta)

  • TAMM v1 mission-month version (.dta)

• Version 2

  • Excel (.xlsx)

    • Mission-resolution version

    • Mission-month version

  • Stata data (.dta)

    • Mission-resolution version

    • Mission-month version

  • Comma separated values (.csv)

    • Mission-resolution version

    • Mission-month version

  • Other resources for v2

    • Codebook (.pdf)

    • Variable summary sheet (.xlsx)

    • Summary of changes in v2 (.pdf)

      • This document summarizes the changes in TAMM v2. It also replicates the findings of replication and expansion of Hultman, Kathman, and Shannon (2014) in the data presentation paper. The findings are nearly unchanged across the two versions. The changes that do occur provide additional evidence for the argument advanced in the paper.

      • HKS APSR main dataset + TAMM v2.dta

    • Full list of changes in v2 (.xlsx)