Original sentence: An example is that of a parent who interacts with his or her child in the same way as he or she would with a sexual partner, without engaging in sexual activity with the child.Covert incest, emotional incest, and psychic incest are terms used by some authors to describe situations between relatives, usually parents and children, in which there is no actual sexual contact, but, rather, an inappropriate emotional relationship.Those who use the term covert incest may use the term overt incest to describe sex acts that occur between relatives, although almost everyone calls this simply incest, without qualification
Edited sentence: Covert incest (Adams 1991), emotional incest (Love 1991, Turner and Maryanski 2005),  or psychic incest (Kavaler-Adler 1996, Bly 1990) are terms used by some authors to describe forms of incest between relatives, usually parent-child, in which there is no actual sexual contact, but, rather, inappropriate adult-child role reversals.For instance, parents who interact with their children in the same way they would with a sexual partner or spouse, but who refrain from physical forms of incest against the child, are seen as committing non-contact forms of incest.However, most non-professionals know little or nothing about covert incest, see overt incest as the only form of incest, and make no distinctions between covert and overt incest.Researchers, psychologists and sexologists who use the term covert incest to describe psychological forms of incest, often use the term overt incest to distinguish between non-contact and contact forms of incest