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NCJRS Abstract

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NCJ Number: 82350 Find in a Library
Title: Training Course in the Analysis of Crime and the Criminal Justice System, Module 5 - Demographic Analysis
Author(s): L Schuerman
Date Published: Unknown
Format: Film
Language: English
Country: United States of America
Annotation: Problems in collecting demographic data for crime trend analysis and techniques for relating such data meaningfully to data on crime rates (i.e., through various mapping procedures).
Abstract: Obtaining data suitable for analysis is complicated: although demographic data are collected regularly by a number of agencies and are readily accessible, the data collected may not suit the purposes of particular analyses (e.g., of rape victims or elderly crime victims). For optimum usefulness, demographic data must be combined with other crime data since a combination of information on the community and on community crime may be essential to assessing the difficulty of implementing community action programs. Maps may be prepared to slant the data presentation or to relate particular crime areas to particular groups in a comprehensible manner. The most common types of maps illustrated here are concentration maps, distribution maps, and unit share maps; each type has a different visual effect in presenting similar data. Spacial aggregates permit combination of variables to be used either by the police or for planning purposes. Such aggregates may be classical longitudinal/latitudinal grids, block systems, or address coding grids such as the ZIP code system. A computerized system (such as the Dual Independent Mapping Code) may be useful for updating maps and grids, but for small areas manual techniques are easier to use. When problems arise in obtaining some types of data, equations can be used to create new data from existing data without the trouble and expense of a survey. The 'symbiomap' is shown to illustrate the most advanced forms of representing data spatially, and the availability of LEAA software to combine different types of data is noted. The speaker is the Senior Research Associate for the Program for Data Research at the University of Southern California's Social Science Research Institute.
Index Term(s): Computer mapping; Crime analysis; Data analysis; Data collections; Demography
Note: *This document is currently unavailable from NCJRS. 2 videotapes, total running time 46 minutes, black and white, 1 inch. Part of the training course in the Analysis of Crime and the Criminal Justice System. See also NCJ-82345-82355 and NCJ-82357 for other videotapes. There is no Module 10 in this series; it was a training exercise.
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