adolescence adolescentdevelopment adolescentpsychology adoption autonomie business child childbirth childdevelopment children'sstudies childrenwithspecialneeds conflictresolution consumersciences development economics education educationalpsychology emotionalmaturity erwachsenwerden erziehung family fatherhood fostering general generalinterests hobbies infantdevelopment infants jugend lifespandevelopment management marriage maternity minoritystudies motherhood parenting pediatrics perinatal personal philosophy practicalguides pregnancy psychology reference relationships schoolage sleep sleepdisorders socialaspects socialsciences toddlers training women'shealth youngadults zwischenmenschlichebeziehung