Which experimental design has the following symbols? $\begin{array}{l|l|lll}
\text { Experimental group: } & \mathrm{R} & \mathrm{O}_{1} & \mathrm{X} & \mathrm{O}_{2} \
\hline \text { Control group: }& \mathrm{R} & \mathrm{O}_{3} & \mathrm{O}_{4}
\end{array}$

Question

Which experimental design has the following symbols? $\begin{array}{l|l|lll}
\text { Experimental group: } & \mathrm{R} & \mathrm{O}_{1} & \mathrm{X} & \mathrm{O}_{2} \
\hline  \text { Control group: }& \mathrm{R} & \mathrm{O}_{3} & \mathrm{O}_{4}
\end{array}$

Quizplus · Accepted Answer

This design is a pretest-posttest control group design, where both groups are randomly assigned (R), the experimental group receives a treatment (X), and both groups are measured before (O1, O3) and after (O2, O4) the treatment.

Which Experimental Design Has the Following Symbols A) Posttest-Only Control Group Design B) Solomon Four-Group Design C)

Which Experimental Design Has the Following Symbols A) Posttest-Only Control Group Design
B) Solomon Four-Group Design
C)