The relationship between creativity and psychosis-proneness

One-hundred and fifteen undergraduates were repeatedly administered a battery measuring schizotypal personality type and creativity (remote associations). Principal Components Analysis found a two-factor model to be most parsimonious. The pattern of results suggests that magical ideation and perceptual aberration items are represented by one factor and suspiciousness by the second. Analysis of consistent versus inconsistent high scorers on the schizoptypia measure indicated that inconsistent high scorers on the suspiciousness factor scored significantly higher than consistent high scorers on the creativity measure.     

Relationship between Psychological Needs and the Five-Factor Model of Personality Classification

The relationship between psychological needs, operationalized by the Adjective Check List (ACL), and the Five-Factor model of personality classification, operationalized by the NEO-PI-R, was evaluated in 147 (101 women and 46 men) psychology graduate students. We found presence of the Five Factors in the ACL in that 30 of 37 ACL scales correlated greater than 40 with at least one of the NEO-PI-R factors. This replicates and extends previous findings and is further evidence of construct validity of the five-factor model, as it pertains to personality classification.     

RESPONDING MAINTAINED BY INTERMITTENT REINFORCEMENT: IMPLICATIONS FOR THE USE OF EXTINCTION WITH PROBLEM BEHAVIOR IN CLINICAL SETTINGS

Results of basic research have demonstrated that behavior maintained on an intermittent schedule of reinforcement (INT) will be extinguished more slowly than behavior maintained on a continuous schedule (CRF). Although these findings suggest that problem behaviors may be difficult to treat with extinction if they have been maintained on INT rather than on CRF schedules, few applied studies have examined this phenomenon with human behavior in clinical settings. The purpose of this study was to determine whether problem behavior maintained on CRF schedules would be extinguished more rapidly than behavior maintained on INT schedules. Three individuals diagnosed with profound mental retardation participated after results of pretreatment functional analyses had identified the sources of reinforcement that were maintaining their self-injury, aggression, or disruption. Subjects were exposed to extinction following baseline conditions with CRF or INT schedules alternated within reversal or multielement designs. Results suggested that problem behaviors may not be more difficult to treat with extinction if they have been maintained on INT rather than CRF schedules. However, switching from an INT to a CRF schedule prior to extinction may lower the baseline response rate as well as the total number of responses exhibited during extinction.     

SELF-RESTRAINT AS POSITIVE REINFORCEMENT FOR SELF-INJURIOUS BEHAVIOR

Many individuals who engage in self-injurious behavior (SIB) also exhibit self-restraint. We compared rates of SIB exhibited by a 32-year-old woman diagnosed with profound retardation across conditions in which access to restraint was (a) continuously available, (b) presented as a consequence for SIB, or (c) unavailable. Rates of SIB increased when access to restraint was contingent upon SIB and decreased when restraint was unavailable, suggesting that self-restraint functioned as positive reinforcement for SIB.     

The experimental determination of unique green in the spectrum

The notion is gaining currency that observers who are distributed normally with respect to commonly measured indices of color vision, may be bimodally distributed with respect to the spectral locus of unique green. Experimental conditions which can produce such deviations from a normal distribution are explored, and it is concluded that the “bimodality” results reported in the literature may reflect differential chromatic adaptation effects. Experimental conditions which guarantee a neutral state of adaptation yield spectral unique green loci that show no evidence of bimodality.     

The self-reference effect: Methodological issues and implications from a schema-theoretical perspective

A number of investigators demonstrated that processing verbal stimuli by encoding them in reference to the self facilitates recall for these stimuli, compared with other kinds of semantic processing. On the basis of a critical discussion of the relevant research, it is hypothesized that the superiority of self-reference is due to some specific features of semantic orienting tasks that serve as control groups for self-referent encoding. This hypothesis is tested in three experiments demonstrating that, when changing certain features of these semantic orienting tasks, the self-reference-effect (SRE) is no longer obtained. In Experiment 3, the statistical difficulties are addressed that arise when not rejecting the null-hypothesis. Furthermore, several implications of schema-oriented explanations of the SRE are tested. Several dependent measures provide evidence in support of the motion that a self-schema is activated during encoding and retrieval of self-relevant material. However, results show that self-referent processing — in contrast to the most general claim of the relevant literature—does not lead to superior recollection.