An attribute variable is
a. one that subjects possess at the beginning of a study.
b. an independent variable that is extraneous to the purpose of the study.
c. directly manipulated by the investigator.
d. a and b
e. b and c
Question 2
Choose the type of experimental validity that is being referred to in the following questions. Is the causal relationship demonstrated in the study generalizable to other persons and settings?
a. Internal c. Construct
b. External d. Statistical Conclusion