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Annals Journal Club: Mixed-Methods Study of Adult Patients Adopted in Childhood
William M Johnson1, Jonathan Yun1
1Grant Family Medicine.
Annals of Family Medicine
|November 24, 2025
Abstract
No abstract available in PubMed .
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There are many research methods available to psychologists in their efforts to understand, describe, and explain behavior and the cognitive and biological processes that underlie it.
Longitudinal Research
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...

