This booklet presents a summary of research associated with SYMLOG reliability and validity. This booklet is written with two audiences in mind: Those people who have little experience with the topic of SYMLOG and who want to learn the basics, as well as those with considerable experience who want an extended set of references.

Most of the studies cited are quantitative and rely on standard statistical procedures. These studies were conducted either independently at universities or other research-based institutions in various parts of the world, or by SYMLOG Consulting Group. "Plain language" explanations are used to summarize the scientific findings for those not familiar with formal statistical analysis.

The research cited in the booklet is invaluable to any individual interested in the theoretical underpinnings of SYMLOG, or any client wanting clarification on the substance and relevance of the SYMLOG method.

"Reliability and Validity" is available in the following languages:

• American English
• Brazilian Portuguese

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