Referred children showed less soothability than general population children. (link.springer.com)
There was however a difference between the children in levels of soothability (a subscale of negative affectivity). (link.springer.com)
The great individual variation in these capabilities can be described by dimensions such as the infant's disposition for distress or negative emotionality, irritability and soothability [57, 58]. (capmh.biomedcentral.com)