Figure 4.

Patterning of connected speech features: factor analysis. Only 23 of the 27 features were used, because there were only 24 patients. A four-factor rotated model provided the most explanatory account of the data. The factors were labeled Paraphasia, Logopenia, Agrammatism, and Motor Speech. Loadings of each feature on each factor are shown and accompanied by bars: positive in blue and negative in red. Communality indicates the proportion of variance of each feature that was explained by the four factors.