Meta-Analysis

Question 1

definition - book

Answer 1

a type of secondary data / statistical analysis that involves combining data from a large number of other studies. Calculation of effect size

Used when there are multiple scientific studies addressing the same question

Question 2

Adv of meta-analysis?

Answer 2

Increases validity of conclusions - eventual sample size is much larger than individual samples. Increases the extent to which generalisations can be made

Question 3

Dis of meta-analysis?

Answer 3

Publication bias
Researchers may not select all relevant studies, leaving out negative or non-significant results.

Data may be biased - only represents some of the data, incorrect conclusions drawn