Experimental and Quasi-Experimental Designs for Research

Capa
Ravenio Books, 3 de set. de 2015

We shall examine the validity of 16 experimental designs against 12 common threats to valid inference. By experiment we refer to that portion of research in which variables are manipulated and their effects upon other variables observed. It is well to distinguish the particular role of this chapter. It is not a chapter on experimental design in the Fisher (1925, 1935) tradition, in which an experimenter having complete mastery can schedule treatments and measurements for optimal statistical efficiency, with complexity of design emerging only from that goal of efficiency. Insofar as the designs discussed in the present chapter become complex, it is because of the intransigency of the environment: because, that is, of the experimenter’s lack of complete control.

 

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Termos e frases comuns

achieved analysis analysis of variance attitudes causal classification classroom comparison confounded correlation covariance Design 12 differences discussed distributed practice educational research effect of X employed equivalent error ex post facto experimental and control experimental control experimental design experimental effect experimental group experimental treatments experimental variable external extraneous extrapolation factors gain generalizability hypothesis inference instances interaction effects internal validity interpretation interviewers involved Kempthorne Latin Squares main effect matching maturation measures memory bias Note O1 and O2 observations occasions occur persons plausible rival hypotheses population possible posttest Scores pre-X present pretest and posttest pretest Scores Pretest-Posttest problem procedures psychology psychotherapy pupils quasi-experimental designs quasi-experiments random assignment randomly reactive arrangements regression Regression fallacies relevant represent research on teaching Sampling Sampling Statistics School Science Settings shift Sources of invalidity Specific Statistical Students Studies Table teachers tests of significance Thorndike time-series true experiment Underwood usually versus

Sobre o autor (2015)

DONALD T. CAMPBELL
Northwestern University 

JULIAN C. STANLEY
Johns Hopkins University 

Informações bibliográficas

TítuloExperimental and Quasi-Experimental Designs for Research
AutoresDonald T. Campbell, Julian C. Stanley
EditoraRavenio Books, 2015
  
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