Qualitative and Quantitative Validation of Tools with Rating Scales Aimed at Assessing the Quality of University Service-Learning

Overview

This paper presents the QaSLu instrument, the first standardized tool for evaluating university service-learning programs. It combines qualitative and quantitative validation methods to ensure reliability and validity while maintaining brevity.

Key Study Components

Area of Science

• University service-learning
• Instrument validation
• Qualitative and quantitative research methods

Background

• Standardized instruments in service-learning are lacking.
• Existing tools do not adequately combine reliability and validity.
• There is a need for a brief yet scientifically robust evaluation tool.
• QaSLu aims to fill this gap in the field.

Purpose of Study

• To create a reliable and valid instrument for university service-learning.
• To utilize qualitative and quantitative methods for validation.
• To adhere to the principle of parsimony in instrument design.

Methods Used

• Delphi qualitative validation method
• Robust Unweighted Least Squares Exploratory Factor Analysis
• Item optimization techniques
• Comparative analysis of service-learning quality

Main Results

• QaSLu is validated through rigorous qualitative and quantitative methods.
• The instrument is brief yet robust, allowing for effective evaluation.
• It sets a precedent for future scientific instruments in the field.
• Comparison between professionals is facilitated through its design.

Conclusions

• QaSLu provides a practical solution for evaluating service-learning programs.
• The study demonstrates the importance of rigorous validation in instrument development.
• This protocol can guide future research in creating valid and reliable scientific tools.

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