Analyses
SESSION
All statistical analyses were conducted using SPSS v25 statistical software. Data normality was verified by Shapiro–Wilk analysis and observation of Q–Q plots and histograms. For any metrics where data residuals were not normally distributed, outlying data beyond 1.5 × the inter quartile range were excluded prior to conducting parametric analyses. Independent t-tests were conducted to evaluate where data for any of our metrics differed between males and females. Where Mauchly’s sphericity tests indicated the variance was significantly heterogeneous among groups, Greenhouse–Geisser alpha corrections were applied when conducting ANOVAs and ANCOVAs. Three-way ANOVAs (Session x Condition x Implement) were conducted to test whether performance differed across sessions, between stimulation conditions, or between implements. Where a main effect of condition or interaction between session and condition was found, 3-way ANCOVAs were conducted, controlling for baseline scores, to establish whether a significant effect of session (Post and Retention), stimulation condition, implement, or the interaction between these variables existed.