BDI {KernSmoothIRT}

The Beck Depression Inventory Data

Description

The Beck Depression Inventory (Beck, Rush, Shaw & Emery, 1979) is a 21-question self-report inventory, one of the most widely used instruments for measuring the severity of depression. Each question has a set of four possible answer choices, ranging in intensity. In this dataset, the respondents are 242 McGill University students. The data were collected by Prof. David Zuroff.

Usage

data(BDI)

Format

BDIkey

a numeric vector with the highest level ordinal response for each of the 21 questions.

BDIresponses

is a numeric matrix with examinees responses. Each column represents a question and each row represents a subject; thus, BDIresponses has 242 rows and 21 columns.

Source

Ramsay JO (2000). TestGraf: A program for the graphical analysis of multiple choice test and questionnaire data.

References

Beck, A. T., Rush, A., Shaw, B. and Emery, G. (1979). Cognitive Therapy of Depression, New York: Guilford Press.

Santor, D. A., Ramsay, J. O. and Zuroff, D. C. (1994). Nonparametric item analyses of the Beck Depression Inventory: Evaluating gender item bias and response option weights. Psychological Assessment, 6, 255-270.