Responsive stimulation significantly benefitted parenting skills with large effect sizes on mother-child interaction ( Cohen 's d 0.8 ) , caregiving environment ( Cohen 's d 0.9-1 .0 ) , and knowledge and practices ( Cohen 's d 0.7-1 .1 ) compared with small-modest significant effects as a result of nutrition intervention on mother-child interaction and caregiving environment only ( Cohen 's d 0.4 and 0.2 , respectively ) .