Definition of Validity
It refers to the appropriateness, meaningfulness and usefulness of the specific inferences made from a test score (Pedhazur and Schmelkin 1991 in Makore-Rukuni 2001).
According to Barkhan (1995) validity is described as the degree to which a research study measures what it intends to measure.
Validity refers to how well a test measures what it is purported to measure. Barbor (2007) defines validity as an indication of accuracy in terms of the extent to which a research conclusion corresponds with reality. Validity is the accuracy of results.
Chikoko and Mhloyi (1995) refer validity as to how sound or effective the measuring instrument is.
Jack (2012) state that, validity means that something is true and can be believed. It is concerned with truth and value.
Garry (2011) postulates that, validity is about the extent to which a piece of research in finding out what the researcher intents to find out.
It is the degree to which a research study measures what it intends to measure.
Harbour (2007) defines validity as an indication of accuracy in terms of the extent to which a research conclusion corresponds with reality. Therefore,
References: Chikoko, V. And Mhloyi, G. (1995). Introduction to Educational Research Methods. Creswell, J. W. (2009). Research Design. Garry, T. (2011). How to do your Case Study: A guide for students and Researchers. Jean, M. and Jack, W. (2012). Doing and writing Action Research. Makore- Rukuni, M. N. (2001). Introduction to Research Methods. Ogunniyi, M. B. (1984). Educational Measurement and Evaluation.