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Sex-role attitudes as measured by the Attitudes Toward Women Scale (Spence & Helmreich, 1972) were assessed in samples of students tested in 1972, 1976, and 1980 and in samples of their parents tested in 1972 and 1976. In both student and adult samples there were large and significant shifts toward egalitarianism between 1972 and 1976. Male students showed no overall change in attitudes between 1976 and 1980, while female students showed a small but significant shift in the conservative direction. Examination of individual items revealed highest endorsement by both sexes of vocational and educational equality.

Theoretical correction and instrumental compensation of charging current are discussed for both conventional and derivative chronopotentiometry. Experimental results indicate that either correction or compensation is effective in reducing the error due to charging the electrical double layer, but that best results are obtained by application of both techniques. In diffusion‐controlled systems, derivative chronopotentiometry shows significant advantages over conventional chronopotentiometry.

Instrumental compensation for diffusion current of prior steps is investigated for the derivative chronopotentiometry of multicomponent systems. This technique, in combination with the instrumental compensation and mathematical correction for charging current described in a previous paper (1) is applied to the analysis of multicomponent systems by standard addition and titration. As examples, an amount of 0.2 ~moles of cadmium was determined by standard addition in the presence of 100 ~moles of lead and an amount of 2 ~moles of cadmium was titrated with EGTA in the presence of 50 ~moles of copper.Chronopotentiometry of solutions containing two or more electroactive substances which undergo con-* Electrochemical Society Active Member. secutive electrode reactions suffers the inherent disadvantage that the faradaic current for the second and subsequent components is reduced by the amount of the residual diffusion current from the more easily ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 128.122.253.212 Downloaded on 2015-06-22 to IP