This tutorial provides an overview of key changes in the Sixth Edition of the Publication Manual, beginning with three overarching goals that guided the revision and ending with a detailed chapter by chapter list of new and expanded content.

This tutorial is designed for those who have no previous knowledge of APA Style.

Copyright 2003 by the American Psychological Association, Inc. 0003-066X/03/$12.00 Vol. 58, No. 1, 78–80 monomethod correlation coefficients, which yield results that are artificially large compared with associations found between realworld, independently measured variables.

Statistical procedures for missing data have vastly improved, yet misconception and unsound practice still abound. The authors frame the missing-data problem, review methods, offer advice, and raise issues that remain unresolved.

Nine individuals were subsequently invited to join and all agreed. These were Leona Aiken, Mark Appelbaum, Gwyneth Boodoo, David A. Kenny, Helena Kraemer, Donald Rubin, Bruce Thompson, Howard Wainer, and Leland Wilkinson.

g., Lariscy & Tinkham, 1999). Because the source of the political message serves as a discounting cue and temporarily decreases the impact of the message, recipients may not be persuaded by the advocacy immediately after they receive the communication.

This PDF is a reprint of a book chapter that considers problems with null hypothesis significance testing.

Wider use in psychology of confidence intervals (CIs), especially as error bars in figures, is a desirable development. However, psychologists seldom use CIs and may not understand them well.

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