Causal research should only be used when a fair amount is known about the problem and when looking for causal relationships among variables associated.
Causal Research is a type of conclusive research, which attempts to establish a cause-and-effect relationship between two or more variables of a change in process and existing methods.
There is a causal relationship between two variables if a change in the level of one variable causes a change in the other variable. Note that correlation does not imply causality. It is possible for two variables to be associated with each other without one of them causing the observed behavior in the other.
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