Visual-perceptual abilities in healthy controls, depressed patients, and schizophrenia patients

Previous studies have suggested a right hemineglect in schizophrenia, however few assessed possible visual-perceptual implication in this lateralized anomaly. A manual line bisection without (i.e., lines presented on their own) or with a local cueing paradigm (i.e., a number placed at one or both ends of the line) and the Motor-free Visual Perceptual Test-Vertical format (MVPT-V) were used to assess the visual-perceptual abilities of healthy controls, schizophrenia and depressed patients. Whereas healthy controls and depressed patients showed a non-significant leftward bias in manual line bisection, schizophrenia patients bisected significantly to the left of the true centre of the line. Interestingly, the pattern of performances in response to the local cueing paradigm was similar in depressed and schizophrenia patients such that both groups demonstrated a significant change in their bisection performance only in response to a cue placed at the right extremity of the line (control performance was modified by cues at either end of the line). Finally, in the MVPT-V, schizophrenia patients were impaired relative to the other two groups, especially in the spatial working memory and visual closure categories. These results suggest that: 1/a deficit towards the right hemifield, consistent with a mild form of right hemineglect, can be observed in schizophrenia; 2/lateralized anomalies could also be observed in depression using an appropriate tool such as manual line bisection; 3/performances in the MVPT-V suggested that a simple visual-perceptual deficit could not explain the lateralized anomaly observed in the manual line bisection, as it is the case in the hemineglect syndrome.     

Movie exposure to smoking cues and adolescent smoking onset: a test for mediation through peer affiliations.

OBJECTIVE: To determine whether the effect of movie exposure to smoking on adolescent smoking onset is mediated through increased affiliation with peers who smoke. DESIGN: A longitudinal study was conducted with a sample of 5th- 8th graders; persons who were nonsmokers at the baseline assessment (N = 2,614) were followed up 18 months later. Movie exposure to smoking cues was assessed at baseline with a rigorous coding procedure. MAIN OUTCOME MEASURE: A school-based survey and follow-up telephone interview determined whether the participant smoked cigarettes. RESULTS: Longitudinal structural modeling analysis indicated movie-smoking exposure was related to smoking onset both through an indirect effect involving increased affiliation with peer smokers and through a direct effect. The analysis controlled for demographics, parenting style, rebelliousness and sensation seeking, school performance, parental smoking, and sibling smoking; several of these variables also had mediated or direct effects to smoking onset. CONCLUSION: The effect of movie exposure on adolescent smoking onset is attributable in part to a social mechanism. Implications of media effects for prevention are discussed.     

Fame and the social self: The need to belong,narcissism, and relatedness predict the appeal of fame

The present online survey study (Amazon’s MTurk; n = 371) investigated links between three different social self-concepts (the need to belong, narcissism, and relatedness) and the appeal of fame. We examined fame attitudes using a newly-devised fame appeal scale (yielding three factors: Visibility, Status and Prosocial), as well as with two items probing frequency of fame fantasizing and perceived realism of becoming famous. Results show that higher belongingness needs were associated with increased appeal of all three fame factors, as well as increased frequency of fantasizing about fame (accounting for age and gender). Narcissism was associated with increased appeal of Visibility and Status, more time spent engaged in fame fantasy, and greater perceived realism of future fame. Finally, Relatedness predicted increased appeal of the Prosocial fame factor only. Findings illuminate the socioemotional underpinnings of fame appeal and the individual differences that may render certain aspects of fame particularly alluring.     

La tarification à l’activité (T2A) : Quelles transformations pour l’activité du personnel infirmier ? Etude exploratoire

This article presents an exploratory study, which attempts to analyse the changes which have occurred in the professional life of nurses in France since the introduction of the system of payment per medical act (T2A). The theoretical background is provided by theories on the activity. The T2A system is intended to provide a means of or ganising nursing care. The main results of qualitative analysis undertaken show above all changes in the way nurses’ work is organised (pace, rhythm, productivity, value for money and turnover). The more intense workload mentioned by the nurses concerns above all an increase in technical and administrative activity rather than any personal interaction with the patients, which appears to have suffered from the changes. The repercessions identified by the nursing staff include frustration, a loss of meaning in their work and a lower standard of nursing care provided.     

Talis pater,talis filius: perceived resemblance and the belief in genetic relatedness

People hardly ever realize that their belief in their high rate of success in detecting family resemblances is affected by their knowledge of the actual genetic link between individuals. In the three studies reported here, 100 men and 100 women were requested to estimate the facial resemblance of photographically portrayed child-adult pairs, while being given either truthful or deceitful information, or no information, about their relatedness. Believing that the members of a pair were parent and offspring was the main predictor of the perceived similarity between them. Men and women agreed in judging children as more similar to female than to male adults, except when the pair members were believed to be related; in this case, men judged the child as resembling the alleged parents equally. Common remarks on family resemblance thus appear to ensue less from a conscious desire to please or reassure the parents than from general hypothesis-testing biases in human reasoning, made perhaps more specific in men by a concern with the problem of uncertain paternity.     

Covert suicide and families of adolescents

"Covert suicide" refers to self-destructive behaviors whose suicidal intent is denied by the adolescent and his/her family. Such behaviors are considered to be an outcome of certain family dynamics and processes. Case examples are given, and issues presented to the clinician in assessing and making initial interventions are discussed. Social issues connected with expanding the range of behaviors considered suicidal, and with considering suicide as a family process, are reviewed briefly.     

Loss of control by a less valid or by a less salient stimulus compounded with a better predictor of reinforcement

An unsalient stimulus, or one imperfectly correlated with reinforcement, may acquire significant control over responding, provided that it is the only available signal for reinforcement, but may fail to acquire control if it is reinforced only in conjunction with a second, more salient or more valid stimulus. A stimulus imperfectly correlated with reinforcement may also lose control over responding if having initially been reinforced in isolation, it is subsequently reinforced only in conjunction with another, more valid stimulus. If the effects of relative salience are to be explained in exactly the same way as those of relative validity, we should expect a similar loss of control by an unsalient stimulus, A, if, after initial consistently reinforced trials to A alone, subjects subsequently receive reinforcement only in the presence of a compound stimulus, A + B. Two experiments on discrete-trial discrimination learning in pigeons and one on conditioned suppression in rats confirm this expectation. The results have implications for theories of selective association in conditioning and discrimination learning.