Statistical Review Jeremiah Slutsky, Brian Chin, Julianna Raye, John David Creswell (2019) Mindfulness training improves employee well-being: A randomized controlled trial. Journal of Occupational Health Psychology 24, 139- 149. doi: 10.1037/ocp0000132 There are many P-values in this paper. One paragraph in the Results section (page 145) is as follows: Attentional Focus We predicted that high-dose participants would increase in momentary attentional focus from baseline to postintervention relative to LDMT participants. To test this, we used three-level multilevel models to evaluate the Study Condition × Time inter- action. There was no main effect of condition across time points, x2(1) = 0.37, p = . 54, but there was a main effect of time across conditions, x2(1) = 7.20, p= . 0073. This was qualified by an interaction between time and condition, x2(1) = 30.28, p <. 0001, such that HDMT participants increased in momentary attentional focus from baseline (M = 3.94, SE = . 19) to postintervention (M = 4.63, SE = . 20), whereas LDMT participants decreased in attentional focus from baseline (M = 4.24, SE = . 20) to postint- ervention (M = 4.01, SE = 21; see Figure 2). 1. Brief Overview of Study This study investigated the relationship between attentional focus at work and the length of mindfulness training program. Enrolled participants were 60 (roughly 50% of the company) adults (Mage = 30.52, SD = 7.80) from a midwestern marketing firm. Half of the participants were random selected to take a High-dose Mindfulness Training Program (6 weeks, HDMT), while the other half took a Low-dose Mindfulness Training Program (Half-day, LDMT). The researcher asked their perceived work productivity using a 6-scale controlled survey to indicate their attentional focus. The researcher would ask the same question using the same survey to the two groups after each mindfulness training program. 2. Response Variable The change of level on work productivity compared with the level before mindfulness training program (6-point Likert-type scale ranging from 1 (not at all) to 6 (very much). Higher scores indicated greater daily productivity.). The research used this as an indicator of attentional focus. 3. Variable Type Score/Level of work productivity: Ordinal 4. Null Hypothesis (H0) HDMT has no change in attentional focus at work relative to LDMT. 5. P-Value =0.0073 < 0.01 6. Conclusion The researchers found strong evidence that attentional focus significantly increased in the HDMT group relative to the LDMT group. Employees in the HDMT were better able to focus on a job task, detach from distractors, and redirect their focus to the job task. Word Count: 230