This is not a full regular book review, but more of an interaction with John P. Kildahl's The Psychology of Speaking in Tongues, published in 1972. There are many of Kildahl's observations with which I can concur based on my 55 years in Pentecostalism (I've been in Assembly of God churches my whole life, and am a fourth generation A/G member). But there are also other observations he makes where I feel his analysis is off, or simply doesn't take into consideration other possibilities. Of course, the book is over 50 years old now, and I'm sure Kildahl, were he alive today with access to more data and evidence, would likely reconsider some of his conclusions.
My format in this article will primarily consist of citing a quote from the book, and then my response to the claims or conclusions that Kildahl makes.