معامل ألفا للتحقق من ثبات درجات أدوات القياس بين الحقائق و المعتقدات الخاطئة لدى الباحثين

Abstract EN

The current research aims to document and analyze the most common misconceptions about the alpha coefficient among researchers, and the most important of these beliefs: (1) Alpha was first developed by Cronbach , (2) the use of alpha without checking its Assumption, (3) the Alpha equals reliability , (4) the high value of the alpha coefficient is an indication of internal consistency and homogeneity, (5) the reliability of the scale grades can be improved by deleting some items, (6) the alpha coefficient value must be equal to or greater than (0.7 or 0.8), (7) the alpha coefficient It is the best among all published reliability coefficients, (8) the alpha is a fixed property to describe the scale, (9) the alpha coefficient measures the internal consistency of the gauge, (10) the largest alpha coefficient is always the best, (11) the alpha coefficient value runs from zero to one, (12) alpha coefficient statistically significant , (13) the increase in the number of items leads to high values for the alpha coefficient, (14) the increase in the number of alternatives leads to high values of the alpha coefficient, (15) the difference in the direction of the item leads to high values of the alpha coefficient, (16) the increase in size The sample leads to high values for the alpha coefficient.

Lastly, some recommendations are offered to correct and address these popular misconceptions held by researchers about Alpha coefficient.