Chapter 6,7,8 Flashcards
Experiments are __ what in internal validity(compared to correlational studies.
HIGH
Why are experiments high in internal validity?
Bc experiments control cofounding variables.
Is internal validity a yes or no question?
No, some exper. have a higher internal validity than others
In correlational research the variable we think is the what?
cause
Is the variable in correlational studies manipulated?
No the variable is not manipulated in correlational research.
Correlational research can be shown to be what to the DV?
related
In exper. research the variable we think is the what?
cause
In exper. research is the variable manipulated or not manipulated?
In exper. research the variable is manipulated.
Exper. research can be shown to be what to the DV?
the cause
What is a dependent variable to a researcher?
The dependent variable to a researcher is a variable they think changes as a result of change in the independent variable.
THe dependent variable is a casual link that can be what from an experiment?, but not a correlation alone
inferred
what are the 3 conditions needed to make a casual inference?
covariation,time-order relationship, and elimination of plausible alernative causes accomplished through the use of control procedures. most importanly by holding conditions constant and balancing.
When the 3 conditions covariation,time-order relationship and elimination of plausible alternative causes for casual inference are met the experiment is said to have what?
The experiment has internal validity
in an independent group design how does it work?
each group of subjects participates in a different conditions of the independent variable.
The most effective independent group design is were they use what type of assignment?
They use random assignment
