The Pearson product–moment correlation coefficient (rp) and the Spearman rank correlation
coefficient (rs) are widely used in psychological research. We compare rp and rs on 3 …

The number, variety, and sophistication of data analytic procedures used by psychologists
have increased rapidly in the past decade. Yet it is our impression (see also Zuckerman et al …

Presenting an extensive set of tools and methods for data analysis, this second edition
includes more models and methods and significantly extends the possible analyses based …

The notion that nonparametric methods are required as a replacement of parametric
statistical methods when the scale of measurement in a research study does not achieve a …

If you conduct research with more than two groups and want to find out if they are
significantly different when compared two at a time, then you need Multiple Comparison …

Previous studies of auditory expectation have focused on the expectedness perceived by
listeners retrospectively in response to events. In contrast, this research examines predictive …

Until recently the design of experiments in the behavioral and social sciences that focused
on interaction effects demanded the use of the parametric analysis of variance. Yet …

The goal of Norman H. Anderson's new book is to help students develop skills of scientific
inference. To accomplish this he organized the book around the" Experimental Pyramid"--six …

Simulations are used to show that the ART (Aligned Ranks Transformation) procedure,
when testing for interaction, is robust and almost as powerful as the F-test when the data …

The present research proposes that sources in the numerical majority (vs. minority) can
affect persuasion by influencing the confidence with which people hold their thoughts in …