; childhood The term child or childhood means an individual under the age of 18, or the period of time in one's life prior to reaching the age of 18. (3) Historical trauma The term historical trauma means the cumulative, transgenerational, collective experience of emotional and psychological injury in communities. (4) Indian Tribe and Tribal organization The terms Indian Tribe and Tribal organization have the meanings given such terms in section 4 of the Indian Self-Determination and Education Assistance Act. (5) Positive childhood experiences The term positive childhood experiences means experiences in a child’s home or community and can create or enhance safe, stable, nurturing relationships and environments, and include positive interpersonal experiences with family and friends, and early care settings, schools, and community such as positive parenting and discipline methods, mentoring, and trauma-informed care approaches. .