Attrition Threats in Longitudinal Studies
In a longitudinal study, which of the following is an effective method for mitigating threats to internal validity posed by participant attrition?
A
Employ computer-based data collection tools for more efficient processing.
B
Use single-blinded procedures to ensure consistency over time.
C
Conduct regular follow-ups and provide incentives to maintain participant engagement.
D
Switch between qualitative and quantitative methods intermittently across study phases.
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