Intensity of intervention in relation to target people, places, or crime problems varies from site to site, and the level refers to the external validity problem of intervenor attributes.

Question

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The statement describes the issue of generalizability rather than external validity related to intervenor attributes. External validity concerns how well the results of a study can be generalized to other settings, people, and times, while the issue mentioned pertains to the variability of intervention intensity and its effects on different targets, which is more about the intervention's applicability or effectiveness across different contexts.

Intensity of Intervention in Relation to Target People, Places, or Crime