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Statistical Power Analysis for the Behavioral Sciences (2nd Edition) 2nd Edition

by Jacob Cohen (Author)

4.3 31 ratings

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Statistical Power Analysis is a nontechnical guide to power analysis in research planning that provides users of applied statistics with the tools they need for more effective analysis. The Second Edition includes:
* a chapter covering power analysis in set correlation and multivariate methods;
* a chapter considering effect size, psychometric reliability, and the efficacy of "qualifying" dependent variables and;
* expanded power and sample size tables for multiple regression/correlation.

Editorial Reviews

Review

"...provides a very convenient source for formulas and tables to compute power in some common analyses....the excellent writing allows lending the book and being comfortable in expecting the scientist to use the book for power calculations with little assistance."
―Technometrics

"This is the second edition of work that has become a minor classic. It ranks as a required reference for research grant applications in the social sciences....It provides a much-needed reference for those not as numerically proficient as many JASA readers....overall the book is clearly written."
―Journal of the American Statistical Association

"...provides readers who apply statistical analyses to their data with descriptions of the rationale for each of several procedures as well as the steps in computation separately and does so in a clearly written style."
―Perceptual and Motor Skills

"...provides a very convenient source for formulas and tables to compute power in some common analyses....the excellent writing allows lending the book and being comfortable in expecting the scientist to use the book for power calculations with little assistance."
―Technometrics

"This is the second edition of work that has become a minor classic. It ranks as a required reference for research grant applications in the social sciences....It provides a much-needed reference for those not as numerically proficient as many JASA readers....overall the book is clearly written."
―Journal of the American Statistical Association

"...provides readers who apply statistical analyses to their data with descriptions of the rationale for each of several procedures as well as the steps in computation separately and does so in a clearly written style."
―Perceptual and Motor Skills

About the Author

Jacob Cohen

Product details

Publisher ‏ : ‎ Routledge; 2nd edition (July 1, 1988)
Language ‏ : ‎ English
Hardcover ‏ : ‎ 590 pages
ISBN-10 ‏ : ‎ 0805802835
ISBN-13 ‏ : ‎ 978-0805802832
Lexile measure ‏ : ‎ 1470L
Item Weight ‏ : ‎ 2.5 pounds
Dimensions ‏ : ‎ 6.75 x 1.5 x 9.75 inches

Best Sellers Rank: #312,969 in Books (See Top 100 in Books)
- #147 in Scientific Research
- #148 in Popular Psychology Research
- #163 in Medical Psychology Research

Customer Reviews:
4.3 31 ratings

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Customers say

Customers find the book clear and easy to understand. It provides a comprehensive overview of power analysis and effect size calculations, taking the guesswork out of estimation. The text provides procedural guidelines for determining power for many designs and relevant statistics in a large set of tables. They appreciate the superb explanation of effect size and the sample size tables.

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Comprehension Power analysis Effect size

6 customers mention "Comprehension"6 positive0 negative

Customers find the book easy to understand. They describe it as a comprehensive reference for statisticians, well-written, and straightforward. The author does a good job of eliminating guesswork from statistical calculations.

"...Really simple to understand and really able to see the implications of the effect size...." Read more

"...the library when needed rather than pay to have it, but a good reference text nonetheless." Read more

"...I learned a great deal from this read. Only for comprehensive readers." Read more

"Clearly written comprehensive tome - a must-have for any Stat reference library, particularly for background on effect sizes." Read more

6 customers mention "Power analysis"6 positive0 negative

Customers find this book a comprehensive review of power analysis. It provides procedural guidelines for determining power for many designs and provides relevant statistics in a large set of tables. The author does a masterful job of taking the guesswork out of statistical power estimation. They say it's a must-have for any reference library, particularly for background on modern statistics.

"...Absolutely critical to understanding and interpreting modern statistics...." Read more

"The Bible of statistical power and effect sizes." Read more

"...on power calculations very quickly and then provides the relevant statistics in a large set of tables; you could probably just borrow it from the..." Read more

"Clearly written comprehensive tome - a must-have for any Stat reference library, particularly for background on effect sizes." Read more

4 customers mention "Effect size"4 positive0 negative

Customers appreciate the book's explanation of effect size and sample size tables. They find the explanation clear and helpful.

"...Superb explanation of effect size - how and why to calculate it and how to deal with unexpected problems with the data...." Read more

"...Really simple to understand and really able to see the implications of the effect size...." Read more

"...a must-have for any Stat reference library, particularly for background on effect sizes." Read more

"...The sample size tables are nice (which is the main reason that I purchased the book), however, even they are difficult to decipher...." Read more

Top reviews from the United States

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Martin W. Denker
This is the bible for research in the behavioral sciences ...
Reviewed in the United States on January 25, 2018
Verified Purchase
This is the bible for research in the behavioral sciences -- THE place to start learning. Superb explanation of effect size - how and why to calculate it and how to deal with unexpected problems with the data. Also, I return to it often as a reference. It does NOT have the latest information on new approaches and methods that have been developed in the last 10 - 15 years. But I go back to it to get oriented when I get stuck in trying to learn a new method (something I read in a journal or something I encounter in software packages). Before I studied this book (first ed., early 1980's) I thought that statistical significance was all that mattered for successful research studies. This opened my eyes to the importance of effect size. NOTE -- this error of omission (reporting significance but not effect size) is still being made in today's journals(!!!), maybe a little less frequently. People in a hurry still look mostly at the mean value of data sets, not the range (or other aspects) of the distribution.

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2 people found this helpful

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MB, MD/PhD
Amazing book, anyone doing statistics should buy and read this.
Reviewed in the United States on January 6, 2016
Verified Purchase
This is an amazing book that is not appreciated enough. Finally broke down and actually spent the money to buy it because it is so valuable. Every student, professor or researcher doing any sort of research that uses statistics. Absolutely critical to understanding and interpreting modern statistics. I was able to read through this book and understand what Cohen was talking about after an undergraduate statistics course. Really simple to understand and really able to see the implications of the effect size. Also, you realize that the p-value is a really meaningless score! Best of luck to all!

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2 people found this helpful

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Larry Southard
A seminal work in the field
Reviewed in the United States on October 5, 2019
Verified Purchase
The Bible of statistical power and effect sizes.

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Kirt
purchase of this text was a bit of a waste.
Reviewed in the United States on August 26, 2014
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I did find more straight forward means of calculating effect size and sample size at a free stats web site. So, purchase of this text was a bit of a waste.

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Thomas J. Leeper
THE book on power analysis
Reviewed in the United States on July 26, 2011
Verified Purchase
Supposedly this is THE book to read on power analysis. The book touches on power calculations very quickly and then provides the relevant statistics in a large set of tables; you could probably just borrow it from the library when needed rather than pay to have it, but a good reference text nonetheless.

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3 people found this helpful

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Jacquelyn
Must have for Stats
Reviewed in the United States on August 29, 2017
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Must have book.
I learned a great deal from this read.
Only for comprehensive readers.

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Marc Hayes
stellar Stat text
Reviewed in the United States on May 16, 2015
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Clearly written comprehensive tome - a must-have for any Stat reference library, particularly for background on effect sizes.

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One person found this helpful

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Adam J. McKee
The Definitive Power Analysis Text
Reviewed in the United States on December 2, 1999
Verified Purchase
Cohen does a masterful job of taking the guesswork out of statistical power estimation. This text provides procedural guidelines for determining power for many designs, and can be quite helpful in determining proper sample sizes. Not for the casual reader, but a necessary addition to any serious researchers statistical library.

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37 people found this helpful

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Consultant data mining
Impec!
Reviewed in France on February 20, 2014
Verified Purchase
Un ouvrage qui a pris de l'age (beaucoup!!) mais qui reste efficace pour ceux confrontés aux calculs de puissance
Les calculs y sont abordés sous différents aspects (comparaisons de moyennes, de proportion, de tableau de contingence, application a la régression) avec le minimum théorique nécessaire.
Beaucoup de tables obsolètes au regard de l'offre logiciel disponible mais le raisonnement du calcul de puissance est bien décrit

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