Rev. and updated ed. of : Experimental methodology.

Includes bibliographical references (p. 511-523) and index.

Introduction to scientific research -- Research approaches and metho ds of data collection -- Problem identification and hypothesis formatio n -- Ethics -- Measuring variables and sampling -- Research validity -- Control techniques in experimental research -- Experimental research d esign -- Procedure for conducting an experiment -- Quasi-experimental d esigns -- Single-case research designs -- Survey research -- Qualitativ e and mixed methods research -- Descriptive statistics -- Inferential s tatistics -- Preparing the research report for presentation or publicat ion.