TY - BOOK AU - Christensen, Larry B., TI - Experimental methodology SN - 0205263658 AV - BF181 .C48 1997 U1 - 150/.724 20 PY - 1977/// CY - Boston PB - Allyn and Bacon KW - Psychology, Experimental KW - Textbooks KW - Psychology KW - Experiments KW - Experimental design N1 - Includes bibliographical references (p. 555-579) and index ER -