Maybe some in the US might have access to the academic journal Review of Religious Research
| Article title | Institutional versus Contextual Explanations for the Growth Of the Jehovah's Witnesses in the United States, 1945-2002 | ||
| Author | Sturgis, P.W. | ||
| Journal title | REVIEW OF RELIGIOUS RESEARCH | ||
| Bibliographic details | 2008, VOL 49; NUMB 3, pages 290-300 | ||
The author argues Witness postwar growth in the US is mainly due to Watchtower organizational initiatives rather than US demographic trends. But isn't this a statement of the bleeding obvious - I mean surely it is a given that an increase from about 50,000 to 1,000,000 cannot be explained on the basis of the increase in the US population alone. I am sure there are more interesting things could be said about JW growth than simply that.
He does make the interesting observation that 12% of US Witnesses are foreign born rather than 7% for the US population in general. That would seem to indicate immigrants account for a significant but not overwhelming amount of the postwar Witness growth in the US.