The cognitive approach began to revolutionize psychology in the late 1950âs and early 1960âs, to become the dominant approach (i.e. perspective) in psychology by the late 1970s. Interest in mental processes had been gradually restored through the work of Piaget and Tolman.
poâ¢rosâ¢iâ¢ty. 1. the state or quality of being porous. 2. (in rock or other natural material) the ratio of aggregated pore space to the volume of the entire mass: used as a measure of the amount of fluid, as oil, that a geologic stratum might hold. [1350â1400; Middle English porosytee porÅsitÄs. See porous, -ity ].
Porosity is the measure of the volume of void space (pore space), their size, and number, and permeability is the measure of how easily the water moves from pore space to pore space through a body such as rock or soil or how well they are interconnected.orosity is the measure of the volume of void space (pore space), their size, and number, and permeability is the measure of how easily the water moves from pore space to pore space through a body such as rock or soil or how well they are interconnected.