Stage Allocation MeasureCass, V. C. (1984). Stage allocation measure. Journal of Sex Research, 20(2), 143–167.
This is an older, seminal article that describes some of the process and rationale behind the Cass Model. Note that newer models support aspects of the Cass Model but suggest that not all groups are equally represented in this model, which you will read about in other sources this week. This article presents some important historical content.