Research Designs 502 - Exp Designs r1

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Experimental and Quasi-Experimental designs : 

Experimental and Quasi-Experimental designs ORLD 502

What You Should Consider : 

What You Should Consider How quasi-experimental designs differ from true experimental designs Basic characteristics of each of the quasi-experimental designs How rival hypotheses are ruled out in each of the quasi-experimental designs

Design Nomenclature : 

Design Nomenclature R – Random assignment to group N – Non-random assignment to group O – Observation X – Treatment

Experimental Designs : 

Experimental Designs Post-test only with random assignment Pre-test, post-test with random assignment Solomon four groups design

Post-test only with Random Assignment : 

Post-test only with Random Assignment

Pre-test, Post-test Designwith Random Assignment : 

Pre-test, Post-test Designwith Random Assignment

Solomon Four Groups Design : 

Solomon Four Groups Design

Experimental Designs and Validity : 

Experimental Designs and Validity

Can We Draw Causal Inferences? : 

Can We Draw Causal Inferences? Explanations must be plausible given circumstances Consistent with data in situations where rival hypotheses shown to be implausible Identification of what is and is not plausible, is not always apparent Need to evaluate interpretation issues

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