Health Promotion Programs
PUBH 6235
Week 8: Study Design/Internal Validity
Please respond to the following questions either by writing the design name or by describing the design using standard notation (X = program, O=observation, R= random assignment). For each design, please discuss all threats to internal validity.
1. a. Design: Single group post-test only
b. Internal validity threats:
2. a. Design: (R) O1 X O2
(R) O1
O2
b. Internal validity threats:
3.
a.
Design: Pretest-posttest design with experimental and comparison group
b.
Internal validity threats:
4. a. Design: O X O
b. Internal validity threats:
5. a. Design: Single group with three
pretests and four posttests
b. Internal validity threats:
-
Rating:
5/
Solution: Health Promotion Programs