Shaughnessy, John J.,    1947- <br/><br/>
Research methods in psychology / 
John J. Shaughnessy, Eugene B. Zechmeister, Jeanne S. Zechmeister. 
 - 9th ed. (Int. ed.) 
 - New York :  McGraw-Hill,  2012. 
 - xv, 488 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780071086813 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology -- Research -- Methodology.<br/>Psychology, Experimental.