Final variable-ratio rates were higher than those under fixed ratios found in previous research, with rates for 2 of the 3 obese boys approximating those of the nonobese.

• 最后的变率，有高于那些在先前研究中适用固定变率者的比例，约有大约三分之二的肥胖男孩，有近似于非肥胖男孩的表现。