Estimating Effect Sizes From Pretest-Posttest-Control Group Designs

By Scott B. Morris. 2008

1,998 citations recorded by the source corpus.

Subfields: Applied Psychology, Developmental and Educational Psychology, Management Science and Operations Research

View Paper: https://www.semanticscholar.org/paper/a2ba934524eb4a01565bf65a775094b00b05e03a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Applied Psychology

In Developmental and Educational Psychology

In Management Science and Operations Research

Citations in the corpus

Effectiveness of job crafting interventions: a meta-analysis and utility analysis (2019, methodology): “For the trials with preintervention and post-intervention measures, we computed the effects size based on the mean differences from pre- to postintervention as the means within each group and the preintervention standard deviations (SDs) as the SDs within each group (Morris, 2008).”
Understanding the Program Effectiveness of Early Mathematics Interventions for Prekindergarten and Kindergarten Environments: A Meta-Analytic Review (2016, background): “, 2011; Clements & Sarama, 2007, 2008; Clements, Sarama, Spitler, Lange, & Wolfe, 2011; Fuchs, Fuchs, & Karns, 2001; Jordan, Glutting, Dyson, Hassinger-Das, & Irwin, 2012; Klein, Starkey, Clements, Sarama, & Iyer, 2008; Papic, Mulligan, & Mitchelmore, 2011; Sarama, Lange, Clements, & Wolfe, 2012; So”
Can we really reduce ethnic prejudice outside the lab? A meta‐analysis of direct and indirect contact interventions (2015, neutral): “…of the included studies: Hedges’s g (for randomized POWC-designs, posttest only with control; see Hedges, 1982; Hedges & Olkin, 1985), Morris’s g (for PPWC-designs, pretest-posttest with control; see Morris, 2008), and Becker’s g (for PPSG-designs, pretest-posttest single group; see Becker, 1988).”
Systematic review and meta-analysis of augmented reality in educational settings (2019, methodology): “To calculate the d value, we used the effect size estimate recommended by Morris (2008).”
Mindfulness as Attention Training: Meta-Analyses on the Links Between Attention Performance and Mindfulness Interventions, Long-Term Meditation Practice, and Trait Mindfulness (2020, methodology): “For the intervention studies, the effect size measure was net treatment gain, that is, treatment gain in the experimental group minus treatment gain in the control group (Morris 2008):”
Working Memory Training Does Not Improve Performance on Measures of Intelligence or Other Measures of “Far Transfer”: Evidence from a Meta-Analytic Review (2016, positive): “We calculated effect sizes by dividing the differences in gain between pre- and post-test in the treatment and the control group by the pooled standard deviation for each group at pretest; this method of effectsize calculation for pretest-posttest designs is recommended (Morris, 2008).”
Meta-analysis in Second Language Research: Choices and Challenges (2010, background): “…in pre-post designs tend to be larger than for betweengroups differences, because study participants serve as their own control in a pre-post design, increasing power to the extent that this effect offsets the smaller sample size typical of these designs (see Lipsey & Wilson, 1993; Morris, 2008).”
Strength and Hypertrophy Adaptations Between Low- vs. High-Load Resistance Training: A Systematic Review and Meta-analysis (2017, methodology): “An adjustment for small sample bias was applied to each ES (31).”
A meta-analysis of the impact of technology on learning effectiveness of elementary students (2017, methodology): “For calculating the effect size for experimental research with pre-test, following formula was used in order to mitigate the selection bias as suggested by Morris (2008).”
The malleability of spatial skills: a meta-analysis of training studies. (2013, background): “Measures of effect size typically quantify the magnitude of gain associated with a particular treatment relative to the improvement observed in a relevant control group (Morris, 2008).”