Figure 4
From: Family-based clusters of cognitive test performance in familial schizophrenia
Multidimensional scaling visualization. A two-dimensional visualization using multidimensional scaling (MDS) of the families in the three clusters found. The similarity measure employed in MDS was the same one that was used in the family clustering procedure, with the natural modification that the distance between a family and itself was set to zero. The horizontal and vertical axes are the directions with the highest and the second highest variance, respectively.