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A joint that permits free movement in only one direction is a
Cross-Sectional Study
A research method that involves analyzing data collected from a population, or a representative subset, at a specific point in time.
Longitudinal Study
A research design where the same subjects are observed or tested repeatedly over a period of time, allowing for the examination of changes and continuities.
Distinction
A difference or contrast between similar things or people.
Socioemotional Development
The process of developing the capacity to experience, manage emotions, and establish meaningful relationships with others.