Reliability and validity are two important concerns in research, and, both reliability and validity are the expected outcomes of research. Validity means you are measuring what you claimed to measure. On the other hand, reliability claims that you will get the same results on repeated tests. There is a relationship...
Walk before you run. Don't bite off more than you can chew. Start small. You've heard them all and a pilot market research study employs the same approach. A pilot study in the market research world is an initial and smaller scale project undertaken before a much larger full-scale study.
This text was written to help the reader acquire a base of knowledge about classical psychometrics and to integrate new ideas into that framework of knowledge. The material is organized into five units: (1) introduction to measurement theory; (2) reliability; (3) validity; (4) item analysis in test development; and (5)…
The Fourth Edition of this book shares the same goal as the previous editions: to guide readers to developing their own rigorous surveys and to evaluate the credibility of other ones. This new edition continues to give practical step-by-step advice on how to achieve the goal. Written in the same clear and accessible style as her other works, author Arlene Fink has completely revised this edition to reflect changes in the way people prepare surveys, use them with the public, and report the results.
Each day we are faced with continuing claims made by media pundits, politicians, teachers, and friends, often quoting research. Consider also the numerous comments and posts on Internet blogs, Twitter, and Facebook that illustrate the confusion between opinion and factual data. How do we learn to interpret the research we hear about and read, to distinguish opinions from scientific facts, and to use this knowledge to conduct our own studies to answer the questions faced in everyday situations?