15 Questions
What is a limitation of Pre-Experimental designs in establishing cause-and-effect relationships?
The independent variable is manipulated too much
Which design offers a greater degree of control and internal validity compared to Pre-Experimental designs?
True Experimental Designs
What guarantees that any differences between groups in True Experimental designs are likely small and due only to chance?
Random assignment of units
Which factor is crucial in determining the internal validity of an experimental design?
Control of the independent variable
What makes it challenging to establish cause-and-effect relationships in Pre-Experimental designs?
Non-variation of the independent variable
In Pre-Experimental design, why is it not possible to show cause-and-effect relationships?
The independent variable doesn’t vary
What distinguishes True Experimental designs from Pre-Experimental designs?
Random assignment of participants
Why do True Experimental designs offer a greater degree of control compared to Pre-Experimental designs?
Random assignment of participants
What is a characteristic of Quasi-Experimental designs that limits the researcher’s control?
Inability to ensure sample homogeneity
How does random assignment of participants in True Experimental designs help ensure internal validity?
It minimizes differences between groups due to chance
What is a key difference between Pre-Experimental and Quasi-Experimental designs?
Degree of control over study variables
Why is the ability to randomly assign participants crucial in True Experimental designs?
It ensures that differences between groups are likely small and due to chance
What makes it challenging for researchers to establish cause-and-effect relationships in Quasi-Experimental designs?
Inability to ensure sample homogeneity
What aspect of experimental design is more pronounced in True Experimental designs compared to Quasi-Experimental designs?
Control over study variables
Why does limited leverage and control over participant selection pose a challenge in Quasi-Experimental designs?
It limits the researcher's ability to ensure sample homogeneity
Explore the different categories of experimental design including Pre-Experimental Designs, True Experimental Designs, and Quasi-Experimental Designs. Learn about the characteristics and limitations of each design type and their impact on establishing cause-and-effect relationships.
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