Which are characteristics of quasi-experimental research designs that are considered $\bold{weaknesses}$, compared with experimental designs? (Select all that apply.)
A) Cost of implementation
B) Confidence in making causal assertions
C) Subject to contamination of internal validity
D) Disruptive to the usual routine of the setting
E) Difficult to perform in a particular clinical setting
F) Findings due to interference of extraneous variables

Question

Quizplus · Accepted Answer

Quasi-experimental designs often lack random assignment, making it harder to confidently assert causality (B), are more susceptible to threats to internal validity due to the lack of control over variables (C), and findings can be influenced by extraneous variables not controlled by the researcher (F).

Which Are Characteristics of Quasi-Experimental Research Designs That Are Considered weaknesses\bold{weaknesses}weaknesses

Which Are Characteristics of Quasi-Experimental Research Designs That Are Considered $\bold{weaknesses}$