Plots of VWM Performance by Motor Symptom Severity.

<p>Plots of VWM Performance by Motor Symptom Severity.</p

Sample Characteristics per Subtype at Time 1.

<p>Sample Characteristics per Subtype at Time 1.</p

Plots of SWM Performance by Motor Symptom Severity.

<p>Plots of SWM Performance by Motor Symptom Severity.</p

Path Diagrams of Analyses

<p>Path Diagrams of Analyses</p

Estimates and Bias-Corrected Confidence Intervals for Models 1 and 2.

<p>Estimates and Bias-Corrected Confidence Intervals for Models 1 and 2.</p

Bivariate Associations Between Study Variables (N = 114).

<p>Bivariate Associations Between Study Variables (N = 114).</p

Means, standard deviations and standardised factor loadings for PDSS-R data.

<p>Means, standard deviations and standardised factor loadings for PDSS-R data.</p

Model fit indices for the 1 factor CFA, the 3 factor CFA and the confirmatory bifactor model.

<p>Model fit indices for the 1 factor CFA, the 3 factor CFA and the confirmatory bifactor model.</p

Diagram of confirmatory bifactor model: Regression coefficients for all significant paths.

<p>Squares represent measured variables, circles represent latent variables, curved lines are where we have allowed covariance of error terms to improve model fit.</p

Correlations between confirmatory bifactor model factor scores and participant characteristics.

<p>Correlations between confirmatory bifactor model factor scores and participant characteristics.</p