| In utero | 
Nutrition Growth Development | 
Type of family (one or two parents, same sex) | 
Geographic demography Urban or rural Environmental exposure Migration | 
| Infancy and Childhood | 
Breast-feeding Physical, psychological, and emotional health Special needs Personality Activity Sleep pattern | 
Parents (including their relationship) Siblings (birth order), adoption, grandparents, cousins, Pets | 
Education, stimulation Indoctrination: Religious, political Realizing potential Screen time (computer, TV) | 
| Adolescence | 
Rites of passage Health behaviors, including sexuality Substance use, including: tobacco, alcohol, drugs, eating behavior | 
School friends, peer group Social networks | 
Higher education Vocational training Military service | 
| Adulthood | 
Personality type Sense of humor Creativity Separation and individuation Spiritual/religious–existential belief system(s) Self-knowledge Shadows | 
Spouse (mate selection) and in-laws Children (letting go) At work: Superiors and colleagues Lovers Sexual activity | 
Employment, occupation, career trajectory Home, leisure time, music, art, literature Media and information technology Socio-economic class, religious values | 
| Middle Age | 
Coping strategies through life events, including: Marriage, birth, infertility, divorce, menopause, retirement, disease, bereavement, misfortune, bankruptcy | 
Care of parents Grandchildren Friends Strangers, herd behavior | 
Political system and ideology National Identity Social class, societal values, social justice Culture Disasters: Natural, man-made | 
| Old Age | 
Physiological, psychological, and cognitive decline Chronic disease Chronic pain Thoughts of mortality | 
Family Friends Helpers | 
Housing, sheltered living, institution |