The main output of CDMs is a classification of attribute profiles, a matrix with dimensions N (number of examinees) × … More
Tag: CDM
4/10/2019 Everyday Psychometrics: attribute
Attributes are latent variables defined with a certain degree of preciseness that belong to a wider domain of knowledge and, … More
4/8/2019 Everyday Psychometrics: information matrix
The information matrix evaluated at the estimates of the model parameters or its inverse variance–covariance matrix has many important … More
4/7/2019 Everyday Psychometrics: attribute structure
Attribute structure is an explicit way of presenting the relationship between attributes in diagnostic measurement. Liu, 2018 Liu, R. (2018). … More
4/6/2019 Everyday Psychometrics: diagnostic assessment
If the number of times each attribute is measured is fixed, measuring attributes in isolation (i.e., using the independent approach) … More
Developing Formative Assessments based on Cognitive Diagnostic Models
This article proposes a procedure for developing formative assessments. The key steps and psychometric tools involved are provided, with an … More
3/18/2019 Everyday Psychometrics: CDM
Achieving the goal of communicating results in a way that leads users of the assessment to make accurate interpretations requires … More
3/17/2019 Everyday Psychometrics: CDM index
In the realm of cognitive diagnostic assessment, representative a priori indices include the theoretical construct validity index, cognitive diagnostic information … More
3/13/2019 Everyday Psychometrics: invariance
Results also showed that regardless of whether an examinee takes an easy, moderate, or hard test in terms of difficulty, … More
3/12/2019 Everyday Psychometrics: model selection
Compared with model selection at the test level, item-level model selection does not require blanket acceptance of a model for … More