Examlex
Carbon and other elements in the second period cannot have expanded octets.
Test-retest Reliability
The reliability of a measurement determined by evaluating the same people on two separate occasions.
Interrater Reliability
A measure of the extent to which different observers or raters agree in their assessment decisions.
Reactivity
The phenomenon wherein subjects alter their performance or behavior due to the awareness that they are being observed.
Convergent Validity
Convergent validity is the extent to which two measures of constructs that theoretically should be related, are in fact related.
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