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Improving Prison Classification Procedures in Vermont: Applying an Interaction Model, 1983-1985

Resource Type
Dataset : event/transaction data
  • Apao, William K.
Other Title
  • Archival Version (Subtitle)
Publication Date
Funding Reference
  • United States Department of Justice. Office of Justice Programs. National Institute of Justice
Free Keywords
correctional facilities; criminal justice system; inmates; living conditions; sentencing; socioeconomic indicators; violence; Vermont; United States
  • Abstract

    The purpose of this data collection was to develop and test an interactive model for classifying prisoners. The model includes person variables, environmental or situation variables, and prison-environmental interaction variables in order to study the interactions between individuals and their environments and to predict offender behaviors such as escape, misconduct, and violence. The model was designed to enhance the predictive validity of the National Institute of Corrections' classification system that was being used in Vermont prisons. Included are scores from the National Institute of Corrections' custody classification and reclassification instruments, scores from a needs assessment, sentencing information, and characteristics of the prison in which the inmate was housed.
  • Table of Contents


    • DS1: Dataset
Temporal Coverage
  • 1983-03 / 1985-06
    Time period: 1983-03--1985-06
  • 1985-01 / 1985-08
    Collection date: 1985-01--1985-08
Sampled Universe
Inmates of state correctional facilities in Vermont.
The sample consists of 982 inmates incarcerated in Vermont state correctional facilities who had at least 30 days to serve in their sentences. Median age of the sample was 25 years with a range of 15 to 69 years. Males constituted 97.5 percent of the sample and had a median minimum sentence of one year and a median maximum of three years.
Collection Mode
  • The codebook for this collection is provided as a Portable Document Format (PDF) file. The PDF file format was developed by Adobe Systems Incorporated and can be accessed using PDF reader software, such as the Adobe Acrobat Reader. Information on how to obtain a copy of the Acrobat Reader is provided through the ICPSR Website on the Internet.

2000-03-21 SAS and SPSS data definition statements and a PDF codebook have been added to this collection. Funding insitution(s): United States Department of Justice. Office of Justice Programs. National Institute of Justice (84-IJ-CX-0027).
This version of the study is no longer available on the web. If you need to acquire this version of the data, you have to contact ICPSR User Support (
Alternative Identifiers
  • 8933 (Type: ICPSR Study Number)
  • Is previous version of
    DOI: 10.3886/ICPSR08933.v1
  • Wooldredge, John. Keeping pace with evolving prison populations for effective management. Criminology and Public Policy.2, (2), 253-258.2003.
  • Wooldredge, John, Griffin, Timothy, Pratt, Travis. Considering hierarchical models for research on inmate behavior: Predicting misconduct with multilevel data. Justice Quarterly.18, (1), 203-231.2001.
    • ID: 10.1080/07418820100094871 (DOI)
  • Apao, William K., Haugh, Larry D., Meyer, Elizabeth. Improving Prison Classification Procedures: Application of an Interaction Model, Final Report. Washington, DC: United States Department of Justice, National Institute of Justice. 1988.

Update Metadata: 2015-08-05 | Issue Number: 6 | Registration Date: 2015-06-15

Apao, William K. (1988): Improving Prison Classification Procedures in Vermont: Applying an Interaction Model, 1983-1985. Archival Version. Version: v0. ICPSR - Interuniversity Consortium for Political and Social Research. Dataset.