Research Methods

Question 1

follow experimental steps but no control group

 One shot case study, one group pretest/posttest, static group comparison

Answer 1

Pre-experimental designs

Question 2

follow experimental steps but no randomization

 Pretest posttest nonequivalent group, time series, nonequivalent before/after

Answer 2

Quasi-experimental designs

Question 3

follow steps, uses control group, and measures change in both groups
 Post equivalent groups study, pretest posttest, Soloman four group

Answer 3

True experimental designs

Question 4

are measurements dependent variable influenced by tx or other variables

Answer 4

Internal validity

Question 5

how confidently can experimental findings be generalized

Answer 5

experimental validity

Question 6

document casual or functional relationship between variables

o Predicted change occurs at 3 different points in time

Answer 6

single-subject design

Question 7

replication

Answer 7

external validity

Question 8

DV socially important, magnitude is important, reasonable intervention

Answer 8

social validity

Question 9

• Attempt is made to find cause or explanation for existing differences between groups
• 2 or more groups and one variable
• Research groups have already been differentiated
• There is no intervention, manipulation, random assignment
• 3 conditions for establishing cause/effect
o Presumed cause must precede effect
o Relationship must be statistically significant
o Other probable causes must be eliminated

Answer 9

Casual-comparative