Show:
Wanna Experiment?
Are you threatening my validity?
It's a group design...
Are you t-testing me?
I know I read the article...
100
It is the only type of research that can test hypotheses to establish cause-effect relations.
What is experimental research?
100
This is the degree to which study results are generalizable, or applicable, to groups and environments outside the experimental setting.
What is external validity?
100
This is a statistical method for equating randomly formed groups on one or more variables.
What is the analysis of covariance?
100
This test tells us whether or not differences between an experimental and a control group are statistically significant
What is a t-test?
100
In the Begeny et al article, researchers took steps to ensure that there was no significant difference between the three program-eligible classroom teachers. This is an example of controlling for this kind of threat to experimental validity.
What is internal validity
200
This is the change or difference in groups that occurs as a result of the independent variable.
What is the dependent variable? (Also accept: criterion effect and posttest variable.)
200
The degree to which observed differences on the dependent variable are a direct result of manipulation of the independent variable, not some other variable.
What is internal validity?
200
There are two major classes of experimental designs. This one is any design that involves two or more independent variables, at least one of which is manipulated.
What is a factorial design?
200
With 120 degrees of freedom, and at a probability level of p=.05, this is the anything meeting or exceeding this t-value would be considered significant (Hint - p563)
What is t= 1.980
200
This program was found in the Begeny et al article to show a statistically strong treatment effect.
What is the HELPS reading program?
300
In an experiment this is the group that receives the treatment.
What is experimental group?
300
This is the effect that refers to physical, intellectual, and emotional changes that occur naturally within individuals over the period of a study that can have an effect on the results of the study.
What is maturation?
300
DOUBLE JEOPARDY!! This type of experimental research involves a single group that is exposed to a treatment (X) and then post-tested (O).
What is a one shot case study?
300
This type of t-test is used to determine whether a statistically significant difference exists between two samples which are randomly formed without any type of matching
What is a t-test for independent samples?
300
DOUBLE JEOPARDY The Begeny et al article was concerned with measuring and improving what aspect of childrens' reading?
What is fluency?
400
DOUBLE JEOPARDY!!! A variable in a setting of a study or research piece that may cause unwanted differences between groups.
What is an environmental variable?
400
The threat that there is unreliability, or lack of consistency, in measuring instruments that may result in an invalid assessment of performance.
What is instrumentation?
400
This type of experimental research involves at least two nonrandomly formed groups, one that received a new or unusual treatment (experimental treatment) and the other that receives a traditional treatment (control treatment). Both groups are post-tested.
What is a static-group comparison?
400
Smaller sample sizes would be expected to show this amount of random differences between groups
What is more or greater?
400
This was considered by the authors to be one of the primary limitations of the Bergeny et al study
What is the short time period (three months)?
500
There are two major problems that experimental studies in education often suffer from. Name one of them.
What is a lack of sufficient exposure to treatments? Or What is a failure to make the treatments substantially different from each other?
500
This occurs when members of a control group feel threatened or challenged by being in competition with an experimental group and they perform way beyond what would normally be expected.
What is the John Henry effect or the compensatory rivalry?
500
This type of test requires at least two groups, each of which is formed by random assignment. Both groups are administered a pretest, each group receives a different treatment, and both groups are post-tested at the end of the study.
What is the pretest-posttest control group design?
500
This type of t-test can be used to compare groups which have been formed by matching, or to compare a single group's performance on a pretest and posttest.
What is the t-test for nonindependent samples?
500
This type of t-test, performed in the Begeny et al article, means a test performed after the application on ANOVA or MANOVA to determine which means are significantly different from other means
What is a post hoc t-test?