PSYB45H3 Chapter Notes - Chapter 22: Behavior Modification, Internal Validity, Dependent And Independent Variables
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Internal validity- independent variable caused the observed change in the dv. External validity the finding can be generalized to other behaviors. How many times abab is necessary: if we observe a very large effect when the independent variable is introduced and if the area is one that has been explored before, one replication might be sufficient. Limitations: might be undesirable to reverse to baseline conditions following a treatment phase. Not sufficient observer to gather the necessary data. Can only effectively say that the treatment is effective for that person. Changing-criterion design, the control that a treatment exerts on an individual"s behavior is evaluated by introducing successive changes in the behavioral criterion for application of the treatment. If the behavior consistently changes in the same direction each time a change is made in the criterion for application of the treatment, we can conclude that the treatment was responsible for the change in.
