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Sex Differences in Distress From Infidelity in Early Adulthood and in Later Life : A Replication and Meta-Analysis of Shackelford et al. (2004)

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A power primer.

One possible reason for the continued neglect of statistical power analysis in research in the behavioral sciences is the inaccessibility of or difficulty with the standard material. A convenient, although not comprehensive, presentation of required sample sizes is provided here. Effect-size indexes and conventional values for these are given for operationally defined small, medium, and large effects. The sample sizes necessary for .80 power to detect effects at these levels are tabled for eight standard statistical tests: (a) the difference between independent means, (b) the significance of a product-moment correlation, (c) the difference between independent rs, (d) the sign test, (e) the difference between independent proportions, (f) chi-square tests for goodness of fit and contingency tables, (g) one-way analysis of variance, and (h) the significance of a multiple or multiple partial correlation.
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Amazon's Mechanical Turk: A New Source of Inexpensive, Yet High-Quality, Data?

Amazon's Mechanical Turk (MTurk) is a relatively new website that contains the major elements required to conduct research: an integrated participant compensation system; a large participant pool; and a streamlined process of study design, participant recruitment, and data collection. In this article, we describe and evaluate the potential contributions of MTurk to psychology and other social sciences. Findings indicate that (a) MTurk participants are slightly more demographically diverse than are standard Internet samples and are significantly more diverse than typical American college samples; (b) participation is affected by compensation rate and task length, but participants can still be recruited rapidly and inexpensively; (c) realistic compensation rates do not affect data quality; and (d) the data obtained are at least as reliable as those obtained via traditional methods. Overall, MTurk can be used to obtain high-quality data inexpensively and rapidly.
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Back-Translation for Cross-Cultural Research

Author and article information

Journal
Social Psychology
Social Psychology
Hogrefe Publishing Group
1864-9335
2151-2590
May 2014
May 2014
: 45
: 3
: 202-208
© 2014

The Hogrefe OpenMind License is based on and identical to the Creative Commons Attribution-Noncommercial License Version 3.0. (The full Hogrefe OpenMind license has also been published as an open access article.)

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