ODD symptoms), the input indicator was constructed by summing the seven items that were not used as the output indicator (Walters and Ruscio, 2009). The MAMBAC analysis is then repeated selecting a different item as the output indicator, resulting in eight MAMBAC graphs for each study. A taxonic construct should yield graphs with an inverse U-shape, with the highest point representing the taxon base rate. A dimensional construct prototypically yields a U-shaped curve.
