Participants take a simulated driving test twice, in one condition they have no alcohol, in the other they have enough alcohol to take them over the legal limit. this design is:

The correct answer is repeated measures design. 

Repeated measures design refers to an experimental design that involves making all participants of the study subject to each condition or variable of the study. Each participant is measured multiple times in a repeated measures study. In this example, the participants are subject to both conditions- a simulated driving test without alcohol consumption, and a simulated driving test after alcohol consumption. 

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada

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