نقل قول:The American Psychological Association, American Psychiatric Association, and National Association of Social Workers stated in 2006:
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[TD]Currently, there is no scientific consensus about the specific factors that cause an individual to become heterosexual, homosexual, or bisexual—including possible biological, psychological, or social effects of the parents' sexual orientation. However, the available evidence indicates that the vast majority of lesbian and gay adults were raised by heterosexual parents and the vast majority of children raised by lesbian and gay parents eventually grow up to be heterosexual.[SUP][2][/SUP]
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نقل قول:The Royal College of Psychiatrists stated in 2007:
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[TD]Despite almost a century of psychoanalytic and psychological speculation, there is no substantive evidence to support the suggestion that the nature of parenting or early childhood experiences play any role in the formation of a person's fundamental heterosexual or homosexual orientation. It would appear that sexual orientation is biological in nature, determined by a complex interplay of genetic factors and the early uterine environment. Sexual orientation is therefore not a choice.[SUP][4][/SUP][/TD]
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نقل قول:The American Academy of Pediatrics stated in Pediatrics in 2004:
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[TD]Sexual orientation probably is not determined by any one factor but by a combination of genetic, hormonal, and environmental influences. In recent decades, biologically based theories have been favored by experts. Although there continues to be controversy and uncertainty as to the genesis of the variety of human sexual orientations, there is no scientific evidence that abnormal parenting, sexual abuse, or other adverse life events influence sexual orientation. Current knowledge suggests that sexual orientation is usually established during early childhood.[SUP][4][/SUP][SUP][138][/SUP][SUP][139][/SUP][/TD]
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