Individualized sampling parameters for behavioral observations: enhancing the predictive validity of competing stimulus assessments.

Mark McIntosh,'s picture
PubMed URL: 
http://www.ncbi.nlm.nih.gov/pubmed/16168882
Author: 
Bowman LG
Author List: 
DeLeon IG
Toole LM
Gutshall KA
Bowman LG
Journal: 
Res Dev Disabil
PubMed ID: 
16168882
Pagination: 
440-55
Volume: 
26
Issue: 
5
Abstract: 
Recent studies have used pretreatment analyses, termed competing stimulus assessments, to identify items that most effectively displace the aberrant behavior of individuals with developmental disabilities. In most studies, there appeared to have been no systematic basis for selecting the sampling period (ranging from 30 s to 10 min) in which items were assessed. Unfortunately, estimates based on brief samples of behavior do not always predict the extent to which items will displace aberrant behavior over longer periods. This study first examined a method for determining an accurate individualized sample length for competing stimulus assessments, based on statistical measures of correspondence with extended effects, using a small number of items. The effects of a larger number of items were then assessed using the determined sample length. Finally, the method was validated by comparing its predictions, in terms of the reduction of problem behavior over more extended periods, to predictions based on sample durations typically used in previous investigations. For two participants, predictions based on individualized determination of sample lengths were more accurate than predictions based on typical sample lengths. These results are discussed in terms of the exchange between expediency and accuracy during competing stimulus assessments.
Published Date: 
September, 2005

Appointments & Referrals

FIND A SPECIALIST

Publications

Read inspiring stories, news and updates about the Institute's patient care, research, special education, professional training, and community programs.

 

Resource Finder

 

A free resource that provides access to information and support for individuals and families living with developmental disabilities.