Why Should Textbooks Be Used with Caution When Used as a Source

Multiple Choice

Why should textbooks be used with caution when used as a source for research ideas?

A) sources used in textbooks are not relevant enough for research projects
B) they usually only report academic and not managerial research
C) they could be out of date and not reflect current research interest
D) research reported in textbooks is not usually theoretically-based and thus less useful in providing researchers with relevant research ideas
E) ideas garnered from them are usually too broad for most research projects