Fuzzy methods for the analysis of psychometric data: an application for measuring reading disability

Name: Fuzzy methods for the analysis of psychometric data: an application for measuring reading disability
Brand: Vita e Pensiero
Availability: OnlineOnly

digital

Article

Magazine

STATISTICA & APPLICAZIONI

Section

Open Access

Title

Fuzzy methods for the analysis of psychometric data: an application for measuring reading disability

Author

Isabella Morlini

Publisher

Vita e Pensiero

Format

Article |

Pdf

Pages

Online from

05-2019

Doi

10.26350/999999_000009

Issn

1824-6672 (print) | 2283-6659 (digital)

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Description Readers' comments

Psychometrics should ideally measure multidimensional concepts like skills, knowledge, abilities, attitudes, personality traits and educational achievement, which cannot be captured by a single variable. In this paper, we suggest a method based on the fuzzy set theory for the construction of a fuzzy synthetic index of the latent psychometric phenomenon, using the set of variables obtained with instruments such as questionnaires or tests. Criteria for assigning values to the membership function as well as criteria for defining the weights of the variables are discussed. For discrete variables, we use a fuzzy quantification method based on the sampling cumulative function. An application regarding the measurement of reading disability in students attending elementary and middle school in Italy is presented.