David M. Jacobs.
documentedsource_actorAbduction Research
Temple University historian; Secret Life (1992) & The Threat (1998) advanced the alien-human hybrid 'infiltration' program claim.
David M. Jacobs (b.1942) earned a 1973 Wisconsin PhD on the UFO controversy (published 1975) and taught history at Temple until 2011. Secret Life (1992) detailed a 'typical' abduction structure; The Threat (1998), built on 700+ hypnotic interviews and the Roper survey, argued aliens run a breeding program aiming to colonize Earth. Walking Among Us (2015) escalated to claims hybrids already blend into society. Mack labeled such readings overly dark; Sagan, Clancy and Gardner faulted his hypnosis methods.