Examlex
An mRNA molecule with several ribosomes attached is called a(n) _______.
Experimental Manipulation
Experimental manipulation involves systematically altering variables in a study to determine cause-and-effect relationships between them.
Status Variables
Characteristics of subjects that can affect the outcome of a study and are not manipulated but can be observed and measured.
Causal Inferences
Conclusions about cause-and-effect relationships, often deduced from the manipulation of variables in experimental designs.
Internal Validity
The extent to which the results of a study can be attributed to the variables under investigation rather than to other extraneous factors.
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