Which of the following statements is NOT true of fixed-effects meta-analysis models?
A) studies with larger sample sizes are weighted heavier because they are thought to reflect closer approximation to the "true score"
B) fixed-effects models can be generalized to studies that are not included in the meta-analysis
C) the distribution of effect sizes is thought to be homogeneous
D) differences in individual effect sizes are thought to reflect measurement error

Question

Quizplus · Accepted Answer

Fixed-effects models cannot be generalized to studies that are not included in the meta-analysis, as they assume that the true effect size is the same across all included studies. Therefore, including additional studies with different effect sizes would violate this assumption and weaken the validity of the analysis.

Which of the Following Statements Is NOT True of Fixed-Effects