How does the posttest-only design with non-equivalent groups rectify the disadvantages presented by the one-group posttest-only and the one-group pretest-posttest design? A. By assessing knowledge, attitude, and behaviour B. By including experimental manipulation followed by measurement C. By including a control group D. By adding a pretest to measure the dependent variable

Which experimental design includes a pretest and post-test measurement for both the control and experimental groups?Review LaterPost-test only designRandomized Control Trial (RCT)Solomon four group designFactorial design

Which experimental design compares the outcomes of a treatment group to a non-randomly assigned control group?Review LaterPost-test only designPretest-post-test only designNon-equivalent control group designTime series design

Which of the following is an advantage of group-administered tests, when compared to individually administered tests?The content of their questions is less limited and restricted.Outside factors are less likely to distract test-takers.Children taking them tend to be more motivated.They are more efficient and less expensive to administer.

A study is designed to test the effectiveness of a program to teach adolescents about nutrition. All research participants are randomly assigned to two groups, one which goes through the program and the other which does not. Both before and after the program, all participants take a test measuring knowledge of nutrition. What type of experimental design is this? A. posttest-only control group design B. pretest-posttest control group design C. 2 × 2 factorial design D. 2 × 4 factorial design

Which of the following is a threat to internal validity found in within-groups designs but not in independent (between)-groups designs? Group of answer choicesdemand characteristicsdesign confoundpractice effectsselection effects