Cross-Sectional Research Design Limitations
A researcher investigates the development of emotional regulation by comparing the abilities of 8-year-olds, 12-year-olds, and 16-year-olds. The data are collected over a six-month period. Which of the following presents the most significant methodological limitation for drawing conclusions about developmental change from this study?
A
The sample size is too small to draw meaningful conclusions
B
The 6-month duration is too short for a developmental study
C
The age gaps between groups are too large to track development
D
The cross-sectional design cannot distinguish between age effects and cohort effects
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