Exam 5

Question 1

Define quasi-experiment.

Answer 1

A study that cannot have random assignment, can be both independent groups and repeated-measures

Question 2

Define repeated-measures quasi-experiment.

Answer 2

All participants experience all levels of the IV

Question 3

Define the internal validity threats for quasi-experiements.

Answer 3

Maturation threats
Regression threats
Selection
Mortality/Attrition threat
Instrumentation threat
Testing threat
Extras: observer bias, experimental demand, and placebo effects

Question 4

Define nonquivalent control group design (post-test and pretest/posttest)

Answer 4

Having no control group, and no random assignment/selection. Pretest/posttest design aids in preventing selection affects.

Question 5

Define interuppted time-series design.

Answer 5

Measuring participants at different points in time
- Example: measuring participants once a month

Question 6

Define nonquivalent groups interrupted time-series design.

Answer 6

measuring two groups that are nonequivalent over time
- Example: measuring both non greek and greek college students for vanity over time