Impulsive Nonconformity Scale

Perceptual aberration and brain hemisphere reversal of foreperiod effect on time estimation

“…Similar findings have been reported in two previous studies (Chapman, Edell, & Chapman, 1980;Simons et al, 1982). There was little correlation between PAB Scale and PHA Scale, which im- .…”

Interpersonal competence among college males hypothesized to be at risk for schizophrenia.

“…It is argued that this hypothesis is not an unreasonable one, given the findings that high scorers on the scales include individuals who display behaviors of the sort commonly reported in the premorbid adjustment of psychotic patients. These findings are described and this notion developed in greater detail elsewhere (e.g., Chapman et al, 1984;Chapman et al, 1980;Eckblad & Chapman, 1983;Edell & Chapman, 1979).…”

“…Additionally, anhedonic subjects have reported extensive social withdrawal and more schizotypal features than have control subjects (Chapman et al, 1980), and they have exhibited the electrodermal hyporesponsiveness to simple tones that frequently has been found to characterize schizophrenics (Simons, 1981). Finally, impulsive, nonconforming subjects, in comparison to control subjects, have reported more psychotic, psychotic-like, and schizotypal experiences; have described more distant and angry interpersonal relationships; have admitted to more antisocial behavior and drug and alcohol use; and more often have met research diagnostic criteria for a variety of affective disturbances, including major depressive disorder and manic or hypomanic episodes (Chapman et al, 1984).…”

“…Impulsive Nonconformity Scale (Chapman, Chapman, & Raulin, 1976, 1978Chapman et al, 1984;Eckblad & Chapman, 1983). Previous reports have described in detail the development and psychometric properties of the scales and have demonstrated their adequate reliabilities (e.g., Chapman, Chapman, & Miller, 1982).…”

The advantages of studying psychological phenomena rather than psychiatric diagnoses.

“…In fact, Oltmanns and Neale (1978) speculated that the recent interest in symptoms is due to the resurgence of interest in diagnosis. Perhaps part of the failure to study symptoms previously stems from the fact that scales for assessing symptoms have only recently been developed (Andreasen, 1979a; Chapman et al, 1983; Chapman, Chapman, & Raulin, 1976; Chapman, Edell, & Chapman, 1980; Eckblad & Chapman, 1983). Whatever the reason for the previous failure to study symptoms, the main point is that the diagnostic-category design, for the reasons given here, does not readily accommodate the study of symptoms.…”