Early and late SEPs—The later the potential the greater the relevance to personality

Short (N₂₁−P₂₇) and long (N₁₃₀−P₂₀₀) latency somatosensory evoked potentials (SEPs) and personality [Eysenck Personality Questionnaire (EPQ) and a short-form Sensation Seeking scale (SS)] were investigated in 26 young healthy adults. Various modes of analysis were carried out on the SEPs, including peak-to-peak, root mean square, absolute area and perimeter measures, over various time windows. The amount of SEP variance accounted for by personality correlations depended on the mode of analysis. High Psychoticism and high Sensation Seeking (and to some extent high Extraversion) correlated negatively with measures of SEP amplitude, the relationship being stronger for later SEP components.     

Characteristics of the frequent nightmare sufferer.

Previous research has found that persons who experience frequent nightmares score highly on scales that measure psychotic symptomatology. Neurotic symptoms have also been implicated as correlates of nightmare frequency. In this study, 30 adult lifelong nightmare sufferers were compared with 30 control subjects, matched for age, sex, and socioeconomic status. Subjects were asked to record all dreams for 1 month and to complete the Minnesota Multiphasic Personality Inventory (MMPI) and the Eysenck Personality Questionnaire (EPQ). Nightmare subjects scored significantly higher on the EPQ Neuroticism scale and on 8 MMPI clinical scales than did the control group. These scales also best discriminated between the groups in a direct discriminant analysis. The results are interpreted as a reflection of global maladjustment rather than of specific psychotic symptomatology.     

Measures of play behavior: The influence of sex-role stereotyped children's books

Preschool children significantly more often chose a sex-stereotypic toy following exposure to a sex-stereotypic children's book. Conversely, boys and girls exposed to a nonstereotypic book significantly more often selected a nonstereotypic toy. Boys and girls individually played with stereotypic male, female, and neutral toys; each child was then read a sex-role stereotypic or nonstereotypic picture book; another play session followed. Measures of visual regard and manipulation were applied to the observed play behavior of 32 preschool children to determine the significance of the findings.     

The effects of the environment upon state cycles in the human newborn

The effects of increased ambient noise level or decreased illumination level upon the postprandial state cycles of the neonate were investigated. As compared to the control group of subjects only the dimmer light condition had any effect. It was found to stabilize the respiration rate per minute over the subjects irrespective of state and to significantly lower the mean respiration rate in epochs of either Alertness or Active Sleep. The increased level of ambient noise had no such effect. Neither environmental change significantly affected the cycling of the states in the post-prandial period nor did they have any effect upon the mean heart rate per minute of the babies. A simple explanation for the positive effect of the dim-light condition was offered.     

Egocentric localization of the visual horizontal in normal and labyrinthine-defective observers as a function of head and body tilt

Perception of the visual horizontal by observers in five different combinations of head and body position was studied to determine the effect of 20-degree body tilts. Both normal and labyrinthine-defective observers made five settings to the visual horizontal for each condition using, a goggle device which presented a collimated line of light to the right eye while the other eye was covered. The results showed no significant constant errors in the settings by either group, and it is suggested that the absence of the E-phenomenon was due primarily to adequate contact cues and kinesthetic cues. The data also make it clear that vestibular information is not required for veridical perception of the visual horizontal under these experimental conditions.     

Show Me the Argument: Empirically Testing the Armchair Philosophy Picture

Many philosophers subscribe to the view that philosophy is a priori and in the business of discovering necessary truths from the armchair. This paper sets out to empirically test this picture. If this were the case, we would expect to see this reflected in philosophical practice. In particular, we would expect philosophers to advance mostly deductive, rather than inductive, arguments. The paper shows that the percentage of philosophy articles advancing deductive arguments is higher than those advancing inductive arguments, which is what we would expect from the vantage point of the armchair philosophy picture. The results also show, however, that the percentages of articles advancing deductive arguments and those advancing inductive arguments are converging over time and that the difference between inductive and deductive ratios is declining over time. This trend suggests that deductive arguments are gradually losing their status as the dominant form of argumentation in philosophy.     

Trait Variance and Response Style Variance in the Scales of the Personality Inventory for DSM–5 (PID–5)

Using self- and observer reports on the Personality Inventory for DSM–5 (PID–5) and the HEXACO Personality Inventory–Revised (HEXACO–PI–R), we identified for each inventory several trait dimensions (each defined by both self- and observer reports on the facet-level scales belonging to the same domain) and 2 source dimensions (each defined by self-reports or by observer reports, respectively, on all facet-level scales). Results (N = 217) showed that the source dimensions of the PID–5 were very large (much larger than those of the HEXACO–PI–R), and suggest that self-report (or observer report) response styles substantially inflate the intercorrelations and the alpha reliabilities of the PID–5 scales. We discuss the meaning and the implications of the large PID–5 source components, and we suggest some methods of controlling their influence.     

Contribution of Peer Deviancy Training to the Early Development of Conduct Problems: Mediators and Moderators

Three variables were tested as moderators of the relationship between peer deviancy training and child antisocial behavior in a longitudinal study of 267 boys and girls from ages 5.3 to 9.3 years. Deviancy training was directly measured by observation of the discourse and play of children with same-gender classmates. Peer deviancy training was significantly related to multi-setting child antisocial behavior from ages 5.3 to 9.3 years. Child impulsivity, poor parental discipline, and peer rejection were all significant moderators of that relationship, even in the context of their direct association with trajectories of antisocial behavior and after controlling for deviant peer affiliation. These moderator effects appeared to be associated with children's increased sensitivity to peer modeling and reinforcement of deviant discourse and play. Not all children are equally affected by peer deviancy training, and an array of intervention strategies are described that may serve to protect children from deviant peer influence.     

The role of illicit substance use in a conceptual model of intimate partner violence in men undergoing treatment for alcoholism

Illicit substance use (ISU) predicts intimate partner violence (IPV) above and beyond alcohol use and other known IPV correlates. Stuart and colleagues (2008) provided evidence for a theoretical framework by which ISU contributes both directly and indirectly to IPV. We sought to replicate and extend their findings using data from 181 married or cohabiting heterosexual couples in which the male had recently begun a substance abuse treatment program and met criteria for alcohol dependence (97%) or abuse (3%). Using SEM, we found that (a) Stuart et al.'s model provided a good fit to the data; (b) men's cocaine use and women's sedative use emerged as particularly relevant to their respective perpetration of IPV; (c) a positive association between men's antisociality and physical aggression was mediated by increased stimulant use; and (d) the specific pattern of IPV predicted by women's sedative use differed across levels of aggression severity. These findings not only highlight the direct role of ISU in relationship aggression, but also support a larger theory-driven model comprising various proximal and distal precursors of IPV.