The present investigation relied upon a neurophysiological explanation of visual masking and compared the backward masking susceptibility of hypothetical schizotypal individuals with that of control subjects. Masking functions were assessed within two masking conditions: high spatial frequency (HSF) and low spatial frequency (LSF). Schizotypal subjects… (More)
The present investigation relied upon a neurophysiological explanation of visual masking and compared the backward masking susceptibility of hypothetical schizotypal individuals to that of controls. In order to assess the relative contributions of the visual system's transient and sustained channels to the backward masking deficit characteristic of the… (More)
We evaluated the diagnostic efficiency of the 35-item Perceptual Aberration Scale (PAS; Chapman, Chapman, & Raulin, 1978) in selecting schizotypal college students using the presence of a Minnesota Multiphasic Personality Inventory (MMPI; Hathaway & McKinley, 1940) code type associated with the schizophrenia spectrum as indicative of schizotypal status. The… (More)
The present study evaluated the concurrent validity of the Rust Inventory of Schizotypal Cognitions (RISC) using the MMPI and the Psychosis Proneness Scales. Multiple regression techniques applied to the RISC and the other measures employed offer support for the validity of this measures as a screening instrument for use in non-clinical samples.
In 1978, Steronko and Woods (J. Abnorm. Psychol., 87: 481-490, 1978) failed to find significant differences in early visual information processing between "schizotypic" and "psychiatric control" college students, as identified by the MMPI; yet these authors concluded that schizotypics suffer from information-processing deficits. The present study was… (More)
We evaluated the construct validity of the revised Social Anhedonia Scale (SAS; Mishlove & Chapman, 1985) through an examination of the Minnesota Multiphasic Personality Inventory (MMPI) profiles produced by extreme scorers on the SAS. The MMPI classification strategy employed by Moldin, Gottesman, and Erlenmeyer-Kimling (1987) was used to group profiles… (More)
The present study evaluated the presence of DSM-IV personality disorders among young adults from a nonclinical setting who produced an MMPI 2-7-8 profile in comparison to a group of MMPI-defined controls. Categorical and dimensional analyses of personality disorders were evaluated. Participants in the 2-7-8 group (n = 20) received significantly more… (More)
The present article reviews and evaluates 20 studies of susceptibility to visual masking among individuals within the schizophrenia spectrum using a neurophysiological framework provided by a multichannel model of masking. Particular emphasis is placed upon methodological considerations within the context of the current experimental visual masking… (More)