Larry Christensen's "Experimental Methodology," Tenth Edition, is a reader-friendly introduction to the basic principles of experimental psychological research. The text provides instruction in experimental research as well as non-experimental approaches such as ex-post facto research, correlational research, and survey research. Also included are qualitative research approaches such as ethnography and phenomenology. Features that facilitate student learning include chapter-opening vignettes that show the relevance of psychological research, study questions within each chapter, and end-of-chapter challenge questions. A short practice exam also is included at the end of each chapter to help students assess their comprehension. A student website includes additional practice exam questions, as well as web links and other study tools.
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The Experimental Research Approach
Experimental Research Settings I
chapter4 Problem Identification and Hypothesis Formation
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administered analysis animal rights animals anxiety assess baseline behavior between-participants bias caffeine causal cocaine conducted construct validity control group correlation criterion debriefing deception dependent depression determine discussed drug effect size error ethical example exist experiment experimental group experimental reliability extraneous variables F-ratio Figure groups of participants identify included increase independent variable individuals inference influence informed consent interaction effect internal validity Internet investigator involves issues Journal manipulation matching mean measure ment method nonequivalent null hypothesis observed obtained outcome population posttest posttest-only design potential present pretest problem procedure psychological random randomly assigned rats receive regression relationship reliability research design research participants research question research report research study responses rival hypotheses sample scientific scores selected sequencing effects significant Social Psychology specific Statistical conclusion validity statistical test STUDY QUESTION Table therapy ticipants tion treatment effect treatment groups Type I error variation