National Academies Press: OpenBook
« Previous: Model Design
Suggested Citation:"INTRODUCTION." National Research Council. 1991. Improving Information for Social Policy Decisions -- The Uses of Microsimulation Modeling: Volume II, Technical Papers. Washington, DC: The National Academies Press. doi: 10.17226/1853.
×
Page 89

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

ALTERNATIVE MODEL DESIGNS: PROGRAM PARTICIPATION FUNCTIONS AND THE ALLOCATION OF ANNUAL TO 89 MONTHLY VALUES IN TRIM2, MATH, AND HITSM 3 Alternative Model Designs: Program Participation Functions and the Allocation of Annual to Monthly Values in TRIM2, MATH, and HITSM Constance F.Citro and Christine M.Ross INTRODUCTION The Transfer Income Model 2 (TRIM2) and the Micro Analysis of Transfers to Households (MATH) model are two microsimulation models that are heavily used for analysis of proposed changes to government tax and transfer programs. The Household Income and Tax Simulation Model (HITSM) is another static microsimulation model that has been used for policy analysis in the income support and tax areas. All three models fall into the class of “static” microsimulation models—that is, models that operate on a cross-sectional basis and make projections to future years using procedures for reweighting, or “aging,” their database to match outside projections of selected characteristics such as the demographic and labor force composition of the population.1 (In contrast, dynamic models apply transition probabilities for events such as birth, death, job change, and others to the records in their database, thereby “growing” their population year by year into the future; see Ross in this volume.) Constance F.Citro is a staff officer at the National Research Council; she served as study director of the Panel to Evaluate Microsimulation Models for Social Welfare Programs. Christine M.Ross is on the staff of Mathematica Policy Research, Inc.; she served as research associate of the panel. 1At present, users of TRIM2 do not normally invoke the model's static aging routines but instead apply out-of-model adjustments to project TRIM2 results obtained from the most recently available database.

Next: CONVERTING ANNUAL TO MONTHLY VALUES IN TRIM2, MATH, AND HITSM »
Improving Information for Social Policy Decisions -- The Uses of Microsimulation Modeling: Volume II, Technical Papers Get This Book
×
Buy Paperback | $100.00
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

This volume, second in the series, provides essential background material for policy analysts, researchers, statisticians, and others interested in the application of microsimulation techniques to develop estimates of the costs and population impacts of proposed changes in government policies ranging from welfare to retirement income to health care to taxes.

The material spans data inputs to models, design and computer implementation of models, validation of model outputs, and model documentation.

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook, NAP.edu's online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  6. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  7. ×

    View our suggested citation for this chapter.

    « Back Next »
  8. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!