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Qvrlab impact evaluation: design and implementation of user tests in a virtual general chemistry laboratory
This study describes the design and preliminary validation of a mixed-method instrument to evaluate user experience, usability, and pedagogical perception of the immersive prototype QVRLAB, designed for General Chemistry practices at UNAD. The process included expert review (n = 10), cognitive interviews, and a pilot test with students (n = 30) in controlled sessions.
The final questionnaire consists of 20 items grouped into three dimensions: functionality, usability, and pedagogical perception, using a 5-point Likert scale. Internal consistency was satisfactory: functionality α = .82; usability α = .85; pedagogical perception α = .88. Inter-rater agreement in the classroom observation guide, measured with the Intraclass Correlation Coefficient (ICC), exceeded 0.75 across criteria. Quantitative analyses (internal consistency and descriptives) were combined with qualitative analyses (structured observation and open-ended questions) to identify refinements in both the instrument and the prototype.
Based on the findings, the revised questionnaire is proposed as a tool for preliminary UX/usability evaluations in immersive educational environments. Further studies with larger samples are recommended to confirm factorial validity and to assess learning effects through pre–post designs.