The items positions are described using the QIM (Quartil Ipsative Mean) of items.The aim of UNIVAL is to assess the essentially unidimensionality based on external sources of information. In the validity study, zero-order correlation and disattenuated correlations are computed. A new video-tutorial explains how to prepare the data and to load it in Factor. External variables can be used in order to compute validity studies, and UNIVAL assessment.Detailed reports of failures are also welcome. We would greatly appreciate any suggestions for future improvements. Please note that that you must allow macros when opening the preprocessing.xlsm file: If you work with Excel, the following file can be used to preprocess the data file. Download Factor.12.01.02 for Windows 32-bits.Download Factor.12.01.02 for Windows 64-bits.Users are invited to download a DEMO and the program: Factor is a freeware program developed at the Rovira i Virgili University.
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