A assessment is a direct, data-based method of presenting one stimulus contingent upon a response and measuring the extent to which that response increases over time. This type of assessment verifies whether or not a stimulus functions as a reinforcer. A assessment measures preference for stimuli, but does not verify whether these stimuli are actually reinforcers or not.

How were the economies of the northern and southern states different? how ere they the same? what factors led them to develop differently?

Should the u.s limit the number of terms a lawmaker can serve in congress

Click on  the link  to view information gathered by the organization keep america beautiful. read "the costs of american littering" to find three negative effects of litter in local communities.  based on your research, what are the negative effects of litter in local communities? check all that apply.litter cleanup is very expensive.litter has decreased since 1969.litter is a constant community problem.litter causes property in the community to be less valuable.litter contaminates water and has other environmental consequences.