he relative accuracy or corectness of the statement
internal validity
the extent to which a set of research findings provides compelling information about causality
external validity
the extent to which a set of research findings provides an accurate description of what typically happens in the real world
construct validity
the extent to which the independant and dependant variables in a study truely represents the abstract, hypothetical variables of interest to the researcher
conceptual validity
how well a specific research hypothesis maps onto the border theory that it was designed to test
reliability
the consistancy or repeatability of a measure of observation
test-retest reliability
measuring a group of individuals at one time and then having them come back a second time to take the test again
internal consistancy
the approach to assessing validity
internal-rate reliability
the degree to which different judges independantly agree upon observation or judgement
covariation
for one variable to cause another, changes in one variable must correspond with changes in the other
nominal scales
meaningful but potentially arbitrary nonnumerical names or catagories