One-way ANOVAs were conducted with probe type as a four-level factor (product vs. multiple vs. small distance vs. large distance); the ANOVAs conducted on the ERP difference waveforms had probe type as a three-level factor (multiple minus product, small distance minus product, large distance minus product).
Five clusters of billboards, identified by conducting a cluster analysis of their graphic content, were used as a within variable in one-way ANOVAs conducted on performance level data collected from the multiple tasks.
The ANOVAs conducted here confirmed previous results.
A one-way ANOVA conducted on median RTs with probe type as factor (multiple vs. small distance vs. large distance) revealed that the main effect was statistically significant (F 2,30) = 8.949, p = 0.001, η p = 0.39).
Multiple factorial ANOVAs were conducted rather than a multivariate approach based on the study's premise that more narrowly conserved facets of impulsivity would be more sensitive to allelic variation.
We than compared those 4 groups according to their personality traits by conducting a multiple ANOVA that yielded significant main effects only for neuroticism (F(3) = 31.183, P ≤.001), extraversion (F(3) = 5.829, P ≤.001), and conscientiousness (F(3) = 8.636, P ≤.001).
Many dietetics practitioners are familiar with basic ANOVA, but less informed of the multivariate applications such as multiway ANOVA, repeated-measures ANOVA, analysis of covariance, multiple ANOVA, and multiple analysis of covariance.
Data were analysed using 2-way ANOVAs with repeated measures and multiple comparisons were conducted using Bonferroni tests.
For the mean comparison of the four groups, one-way ANOVA and Student-Newman-Keuls multiple comparison were conducted.
A one-way ANOVA, followed by the Holm-Sidak test for multiple comparisons, was conducted using SigmaStat Windows Version 3.5 to evaluate differences in mean values among groups.
