NotesFAQContact Us
Search Tips
ERIC Number: ED170045
Record Type: Non-Journal
Publication Date: 1979-Mar
Pages: 13
Abstractor: N/A
Reference Count: N/A
Classificational Methods for the Psychometric Evaluation of Screening Procedures.
Lichtenstein, Robert
The trend towards using screening programs to facilitate early identification of developmental or learning problems has accentuated the need to establish reliable and valid screening procedures. Researchers in this area must recognize that the dichotomous decision-making function of screening (i.e., to refer or not refer a child for further assessment) requires psychometric evaluation methods which are suited to this function. Traditional reliability and validity coefficients, frequently applied to screening procedures, are designed to express relationships between continuously-scored predictors and criteria. For a screening procedure, however, only classificational (i.e., group membership) distinctions are of consequence; measurement variance within the group of referred or non-referred individuals is irrelevant in evaluating a discrete screening outcome. A contingency table showing the cross-tabulation of a dichotomous screening predictor and a dichotomous criterion variable is commonly used to represent screening decision hit rate. A standard index for summarizing the predictor-criterion relationship in such a table has yet to be established. In reviewing alternatives, a measure which strategically weights the false positive and false negative error rates seems preferable. A cross-classificational model for dichotomous test and criterion measure and a compendium of cross-classificational indexes are included. (Author/RH)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A