They argue that this is the case if the unobserved center quality characteristics are correlated with other independent variables
They argue that this is the case if the unobserved center quality characteristics are correlated with other independent variables 4) The NAEYC accreditation criteria include guidelines for staff-child interaction, curriculum content, staff qualifications and training, group size and adult-child ratios, physical environment and safety, nutrition. 5) The other variables included in the model are average …