Research Guides: Lifespan Development: Search Strategy

Search by Age Group

Topic	CINAHL	ERIC	MEDLINE	PsycINFO
Infant	Infant, Newborn: birth-1 month Infant: 1-23 months All Infant	Infants^^ Neonates^^ Infant Behavior/Care/Mortality^^	Infant, Newborn: birth-1 month Infant: 1-23 months All Infant: birth-23 months	Neonatal (birth-1 mo) Infancy (2-23 mo)
Toddler	Child, Preschool (2-5 years)	Toddlers^^	Child, Preschool: 2-5 years	Preschool Age (2-5 yrs)
Early childhood	Child, Preschool	Preschool Education Kindergarten	Child, Preschool: 2-5 years	Preschool Age (2-5 yrs)
Middle childhood	Child: 6-12 years	Elementary Education Primary Education Specific grades (Grade 1, Grade 2, etc.)	Child: 6-12 years	School Age (6-12 yrs)
Adolescence	Adolescence: 13-18 years	Junior High Schools Middle Schools High Schools Secondary Education Specific grades (Grade 6, Grade 7, etc.)	Adolescent: 13-18 years	Adolescence (13-17 yrs)
Emerging Adulthood	[emerging adult*] in search box	Young Adults^^ [emerging adult*] in search box	Young Adult: 19-24 years	Emerging Adulthood^^
Early Adulthood	Adult^^ (19-24 years)	Higher Education Postsecondary Education	Young Adult: 19-44 yrs	Young Adulthood (18-29 yrs) Thirties (30-39 yrs)
Middle Adulthood	Middle Aged: 45-65 years	Adult Education	Middle Aged: 45-64 years	Middle Age (40-64 yrs)
Late Adulthood	Aged 65+ Aged, 80 and over		Aged: 65+ years Aged, 80 and over	Aged (65 yrs & older) Very Old (85 yrs & older)
End of Life	Hospice and Palliative Nursing^^		Palliative Care^^ Terminal Care^^	Palliative Care^^

Chart adapted with permission from University of Portland Clark Library (2018) "Search for Age Groups."

Including but not limited to: