This type of design is one where all participants participate in all experimental treatment conditions.
1). Factorial design
2). Repeated measures design
3). Replicated design
4). Pretest-posttest control-group design
2. Which of the following in not one of the key threats to internal validity?
3. Field testing of the questionnaire shows that
5. what are the five key objectives of science?
6. The method of scientific research aims at
7. Which of the following is a measure of location?