Proponents of the current operating performance concept of income base their arguments on the belief that only changes and events controllable by management that result from current-period decisions should be included in income. Alternatively, advocates of the all-inclusive concept of income hold that net income should reflect all items that affected the net increase or decrease in stockholder’ equity during the period, with the exception of capital transactions. This group believes that the total net income for the life of an enterprise should be determinable by summing the periodic net income figures.