Table 4.

Correlations Between RADD and Other Direct and Informant-based Measures Among Individuals with DS Based on Dementia Status

Measure	RADD Scores Total Sample (n = 114)	RADD Scores Non-Demented (n = 43)	RADD Scores Demented (n = 71)
Brief Praxis Test	.842**	.789**	.852**
Severe Impairment Battery	.921**	.862**	.930**
Dementia Scale for Mentally Retarded Persons - Sum of Cognitive Subscale	−.889**	−.855**	−.827**
Dementia Scale for Mentally Retarded Persons - Sum of Social Subscale	−.683**	−.337**	−.661**
Bristol Activities of Daily Living.	−.812**	−.675**	−.769**

RADD, Rapid Assessment for Developmental Disabilities; DS, Down syndrome

^**Pearson correlations significant p < .01

^*significant p < 05;