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…seminar effectiveness. First, to estimate the average effectiveness of semi
nars, we used the Hunter and Schmidt (2004) interactive psychometric
meta-analytic method based on a random effects model to compute meta-ana
lytic estimates of the standardized difference (i.e., 8) between the grades and
between the retention rates of first-year seminar…
https://www.wichita.edu/services/studentsuccess/first_year_seminar/MetaStudy.pdf