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 ].
Register to Answer this Question. 1  Porosity : is the ratio between the volumes of the pores of the rock and the total volume of the rock. 2  or. 3  It is a percentage of pore spaces of a rock to the total volume of the rock. 4  Effective porosity : is the ratio of the volume of the pores which are interconnected in the rock to the total volume of this rock.