But it also found that there was little variance in the scores resulting from those observations, raising questions about the rigor of the process. (njspotlight.com)
And, why is there such little variance for a given model. (deepclimate.org)
One of the reasons that child care experience explains so little variance in the security of attachment is not only that maternal sensitivity is the preeminent determinant but also that, independently of maternal sensitivity, other influences are also important. (child-encyclopedia.com)