1. A description of glossolalia - or speaking in tongues: what is it? -- 2. How Tongue-speakers describe what they do -- 3. Historical perspective: how much has glossolalia been practiced? -- 4. Seven theories -- 5. An Empirical investigation -- 6. Essential differences: are glossolalists mentally healthier than others or less so? -- 7. Psychological factors in the glossolalia experience -- 8. Group behavior and the glossolalia experience -- 9. Unanswered questions -- 10. Summarizing: is it a spiritual gift?
