[Solved] In studies that followed hundreds of New Zealand and U.S.girls from age 5 to 18,________ was linked to sexual activity before age 16. A) erotic plasticity B) a homosexual orientation C) a father's absence D) gender typing Illness Anxiety Disorder: A mental health disorder characterized by excessive worry about having or acquiring a serious illness despite medical reassurance. Conversion Disorder: A mental condition in which a person experiences physical symptoms that are not attributable to a medical condition but are instead thought to be a response to psychological stress or conflict. Significant Problem: A substantial or essential issue that requires attention or resolution. Munchausen Syndrome: A psychiatric disorder wherein an individual deliberately produces, feigns, or exaggerates symptoms of illness to gain attention, sympathy, or reassurance from medical personnel or others.