Statistical Conclusion Validity
Statistical conclusion validity addresses this element needed to determine causality.
What is covariation?
Elementary students participate in a study testing how quickly they can spell CVC words. The pre-test measure lasted 15 minutes and the post-test lasted 30 minutes. This is an example of what IV threat.
What is instrumentation?
External validity questions whether casual relationship holds over these 4 aspects that were or were not in the experiment
What is variations in persons, settings, treatments, and outcomes?
Mrs. Smith agrees to participate in a study implementing a reading curriculum. When the observer is present she follows the curriculum perfectly, but when the observer is not there she does not follow the curriculum. This is an example of what CV threat?
What is Reactivity to Experimental Situation?
Good construct explication is only half the job of construct validity. The other half is needed so the researcher can assess the match between the assessment and the constructs.
What is good assessment of the sampling particulars?
This threat to statistical conclusion validity affects the ability to say that these groups are not equal when they are actually not equal.
This threat involves loss of respondents to treatment or measurement
What is attrition?
The degree to which the study’s findings could be generalized to a larger population.
What is population validity?
Teachers who are in the control group of a study become “super teachers” to demonstrate they are as good as the treatment group of teachers is an example of what CV threat?
What is Compensatory equalization?
Most solutions to improving statistical conclusion validity by increasing power do so by ____.
What is removing variability in the outcome?
Three things needed to establish causal relations
What are temporal precedence, covariation, and alternative explanation?
If a study’s variables continue to be significant in the future and its research findings can be used appropriately in different contexts, it is considered to be high in this.
What is temporal validity?
A researcher communicates what the desired outcome for the study might be to the participants in a study, so they give the answers desired by the researcher in an attempt to make themselves look knowledgeable is an example of what CV threat?
What is Experimenter expectancies?