TRUE (Testing platfoRm for mUltimedia Evaluation) is a platform independent freesoftware oriented to the creation and management of online subjective / perceptual tests where different stimuli (audio, audiovisual, graphics and text) can be evaluated by human raters to validate or label them.

 

Because of TRUE is created to perform online tests, achieving a broad audience for your tests is easy. Moreover, evaluators only need a computer with Internet connection and a web browser. No installation of extra software is required, nor the assistance of the test designer because you can add all the instructions at the beggining of test and some samples also.

 

TRUE is highly customizable to fit the requirements of the perceptual tests designed by different researchers (see Features for more information). There are some predefined templates, including MOS (Mean Opinion Score), CMOS (Comparison MOS) and DMOS (Degradation MOS) tests based on ITU-T P.800 recommendation.

 

In addition, interactive graphical plug-ins can be used to enhance the capabilities of the orginal platform, as for example the Self-Assessment Manikin¹ (SAM) plug-in (see figure), oriented to the evaluation of emotional resources. Some plugins are distributed from this site, but developers can easily design new ones following the documentation.

 

You can get more information about the features of this software in the Features section.

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¹ Based on Bradley, M. & Lang, P. (1994). Measuring emotion: The self-assessment manikin and the semantic differential. Journal of Behavioral Therapy and Experimental Psychiatry, 25, 49-59