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Welcome to eGyanKosh, your premier destination for readily accessible educational resources. In this section, we present Unit-12: Construction of Research Tools, an essential component of your academic journey through IGNOU. Designed for the learners of 2025, this study material offers comprehensive insights into the methods and techniques used in crafting effective research tools. Whether you are preparing for examinations, enhancing your understanding of research methodologies, or seeking to construct your own research instruments, this resource promises to equip you with the knowledge and skills necessary for success. Best of all, you can download this study material for free, making quality education accessible to all.