McInish and Srivastava recently examined the multidimensionality of Rotter's Locus of Control Scale for common stock investors. Following principal-component analysis with a varimax rotation, these authors extracted nine factors using the scree test and the latent root criterion. Replication using the Very Simple Structure index yields a single-factor solution. Parkes' two-factor solution using the same Very Simple Structure technique is obtained only if principal-factor analysis is employed to obtain the initial factor pattern.