Reading a Cross-Sectional Design
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
A cross-sectional design supports statements about age differences and not about change within a person.
Show
A technology-use study across three age groups reports a difference that may be entirely a cohort effect.
Watch for
Every cross-sectional age difference is a candidate cohort effect until a second design rules it out.