Author Question: What can help rule out the threats to internal validity in an experimental design? a. proper ... (Read 39 times)

Jkov05 · **on:** Aug 13, 2018

What can help rule out the threats to internal validity in an experimental design?

a. proper selection and assignment of subjects to groups
b. large sample size
c. small sample size
d. nothing can rule out threats to internal validity

Question 2

What type of design is illustrated in the following diagram? Experimental Group 0 X 0 Control Group 0 0 Measurement time1 time2 time3

a. time-series design
b. classical experiment
c. cohort design
d. nonequivalent-groups design