When I asked the question, "what is the difference between assessment and evaluation," I usually got a lot of blank stares. Throughout my years of teaching undergraduate courses, and to some extent, graduate courses, I was continuously reminded each semester that many of my students who had taken the requisite course in "educational tests and measurements" or a course with a similar title as part of their professional preparation, often had confusing ideas about fundamental differences in terms such as measurement, assessment and evaluation as they are used in education. These two are very important aspects of research design. How can a researcher be sure that the data gathering instrument being used will measure what it is supposed to measure and will do this in a consistent manner? This is a question that can only be answered by examining the definitions for and methods of establishing the validity and reliability of a research instrument. In research, their use is a little more complex. The everyday use of these terms provides a sense of what they mean (For example, your friends are reliable.
Reliability and validity are important concepts in research.
These two concepts are validity and reliability. Whether the same measurement process yields the same results. Whether we are measuring what we intend to measure. How to evaluate the measures? Two of the primary criteria of evaluation in any measurement or observation are: 1. Although the guiding principle should be the specific purposes of the research, there are better and worse questions for any particular operational. RELIABILITY AND VALIDITY INTRODUCTION For every dimension of interest and specific question or set of questions, there are a vast number of ways to make questions.
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