The objective of this study was to attempt to develop an index of asse
ssment items important to most, if not all, mental capacity determinat
ions. A group process, judgmental method was used. Three separate pane
ls of multidisciplinary experts were assembled to define relevant asse
ssment items and to assign importance weights to the items. All three
panels generated a list of assessment items, but panelists refused to
assign importance weights. Four items were identified by all three pan
els, six were identified by two panels, and three were identified by o
ne panel only. A composite list of mental capacity assessment items wa
s generated, but the study failed to generate a standardized assessmen
t instrument.