The Coital Alignment Technique (CAT), a basic physiological alignment that provides consistent and effective stimulation for female coital orgasm, has been evaluated in a series of controlled studies. An overview of the CAT is discussed as well as related studies including replication studies, and subsequent studies of Orgasm Consistency Training (OCT), which incorporates the CAT technique. Classic sex problems like female coital anorgasmia and premature ejaculation and modern day epidemic-level sex problems such as hypoactive sexual desire are analyzed in relation to a syndrome of sexual dysfunction symptoms devolving from failed intercourse. Studies indicate that some symptoms of sexual dysfunction considered to have their etiological foundations in pathology are the result of ineffective intercourse techniques.