Consider the diagram below. Which type of experimental design is depicted?
$$\begin{array} { c c c c }
\mathrm { R } & \mathrm { O } _ { 1 } & & \mathrm { O } _ { 2 } \
\mathrm { R } & \mathrm { O } _ { 3 } & \mathrm { X } & \mathrm { O } _ { 4 }
\end{array}$$
A) the nonequivalent group design
B) the pretest-posttest control-group design
C) the Solomon four-group design
D) the posttest-only control group

Question

Consider the diagram below. Which type of experimental design is depicted?
$$\begin{array} { c c c c } 
\mathrm { R } & \mathrm { O } _ { 1 } & & \mathrm { O } _ { 2 } \
\mathrm { R } & \mathrm { O } _ { 3 } & \mathrm { X } & \mathrm { O } _ { 4 }
\end{array}$$
A) the nonequivalent group design
B) the pretest-posttest control-group design
C) the Solomon four-group design
D) the posttest-only control group

Quizplus · Accepted Answer

The diagram represents a pretest-posttest control-group design, where R indicates random assignment, O indicates observation or measurement, and X indicates the treatment or intervention.

Consider the Diagram Below A) the Nonequivalent Group Design B) the Pretest-Posttest Control-Group Design

Consider the Diagram Below A) the Nonequivalent Group Design
B) the Pretest-Posttest Control-Group Design