Behavioral effects of testosterone in relation to social rank in the male rabbit

The role of gonadal androgens in favoring the adaptation to environmental pressure, including social organization, is well known. In the rabbit, testosterone administration increases marking behavior, and its level can be affected by agonistic interaction. In this experiment, we studied the effect of subcutaneous administration of testosterone propionate (TP) (3 mg/d for 6 days) in male rabbits belonging to the same social group (6 groups of 4 animals). In 2 additional groups (4 animals each), males were injected with almond oil. The animals were observed for 6 days in seminatural conditions, then treated with TP (or oil) and observed for another 6 days. The dominant/subordinate frequency ratio of behavioral patterns was used to rank the animals. The testosterone plasma concentration was correlated with agonistic behavior after the first period of social interaction. A significant increase of marking, digging, and defensive activity was observed after TP administration in all animals independent of rank, whereas this increase was not present in animals treated with oil. Agonistic and interactive behaviors increased significantly after TP treatment only in the first‐ranking animals. This indicates the influence of social rank in the modification of behaviors involving interactions among subjects Aggr. Behav. 29:269–278, 2003. © 2003 Wiley‐Liss, Inc.     

Correlations of selected psychomotor and visuomotor tests with initial Dynavision performance

The current study investigated the relationship between Dynavision scores for 36 men and 52 women (M age = 20.5 yr.) and performance on six conventional psychomotor tests which presumably tap similar psychomotor abilities and visuomotor skills. Analysis indicated that initial Dynavision performance was significantly correlated with performance on these common psychomotor tests. These data extend findings that propose the effectiveness of the Dynavision apparatus to assess performance on basic visual-motor and visual-cognitive functions. Taken together with these new results, findings suggest that this apparatus might contribute to psychomotor assessment and may be potentially useful for effective selection and identification of individual differences in human behavioral performance.     

Relation between referential and reflexive processes: an explorative study

Referential process (RP) has been investigated in the psychotherapy domain to understand the mechanisms underlying clients’ problems and identify the process of change. RP shares some theoretical assumptions with another relevant construct in the psychotherapy domain, i.e. the reflexive process. However, the relation between RP and reflexive process has never been explored through an operational approach. This study aims at analyzing the relation between referential activity (RA), conceived as the linguistic index of RP, and two reflexive processes of different complexity, reflection and reflexivity, in a group counseling program. Audio recordings from seven group counseling sessions were analyzed through two procedures: (1) the latest Italian version of the computerized text analysis software developed for analyzing RA, and (2) the analysis of the narrative functions of reflection and reflexivity. Accordingly, reflection processes were mainly identified in the narrative excerpts by adopting the conventional procedure for RA software-based analysis and combining it with the analysis of the narrative functions. More complex processes of reflexivity were detected when the analysis of the narrative functions was combined with an innovative procedure for RA software-based analysis. Overall, these data indicated that a high level of RA is essential for activating reflexive processes of higher complexity.     

Bizarreness of size and shape in dream images

Bizarreness in dreams is defined as an unusual combination of features in the phenomenal unified consciousness, that is, an incoherent simulation of the waking world. The present study investigated the specific mechanisms underlying dream image production and the phenomenal unity of consciousness by focusing on size and shape bizarreness. Data were derived from a Dream Data Bank of experimental dream studies. Analyses revealed that feature distortion was quite infrequent. Results are discussed in terms of cognitive processes proposed in a dream production model. Theoretical cognitive constructs, such as Kosslyn's imagery model, memory systems functioning, and binding, were used to speculate about these two specific types of bizarreness.     

Early emotional instability,prosocial behaviour,and aggression: some methodological aspects

The internal consistency of Emotional Instability, Prosocial Behaviour, and Aggression scales was examined in elementary school children aged between 7 and 10 years. Multiple informants (self-report, teacher rating, mother rating, and peer nomination) were obtained on the above three dimensions. Relationships between the scales were first examined within the single informant frame of reference and then between informants. The concurrent validity was assessed using sociometric measures (popularity, rejection, social impact, and social preference) and the Achenbach and Edelbrock Child Behavior Checklist (teacher and parent form). The results confirm the internal validity of the three scales measuring emotional instability, prosocial behaviour, and aggression in child self-report, teacher rating, and mother rating. The use of self-report measures seems promising within the multiple informant strategy of research on child behaviour. Correlational results show satisfactory concurrent validity for the three scales, especially for teacher rating and peer nomination. The strict relation between emotional instability and aggression poses problems of discriminant validity which need to be further investi gated.     

At-risk children's causal inferences given emotional feedback and their understanding of the excuse-giving process

Italian male school children, ranging in age from 7 to 10 years, were identified as at-risk children on the basis of self-reports, teacher questionnaires, and peer nominations assessing aggression, emotional instability, and pro-social behaviour. Together with a normal control sample, these children participated in two studies guided by attribtional theory. In Study 1, following teacher emotional feedback of anger or sympathy for failure, attributional inferences regarding low ability or lack of effort as the cause of that failure were rated. In Study 2, controllable and uncontrollable causes of a social transgression were given, and participants rated the anticipated anger of the ‘victim’ and their intention to withhold or reveal the cause. Strong effects for both populations that were consistent with attributional predictions were reported. In addition, differences between the inferences, expectations, and behavioural intentions of the populations were found, with at-risk children being less likely to perceive sympathy as a cue for low ability, and anticipating more anger from others following a transgression, particularly when there was a ‘good’ (i.e. uncontrollable) reason for the broken social agreement. It was contended that the results support the social-cognitive approach to the understanding of mechanisms of risk and deviancy.     

Examining the Course of Suicidal and Nonsuicidal Self-Injurious Thoughts and Behaviors in Outpatient and Inpatient Adolescents

Suicidal and nonsuicidal self-injurious thoughts and behaviors (SITBs) among youth are major public health concerns. Although a growing body of research has focused on the complex association between nonsuicidal and suicidal self-injury, the temporal relationship between these two classes of behaviors is unclear. The current study addresses this empirical gap by examining the course of SITBs in adolescents receiving outpatient (N = 106; 82.1 % female) and inpatient (N = 174; 75.9 % female) treatment. SITBs (co-occurrence, age-of-onset, and time lag between SITBs) and major psychiatric disorders were assessed at a single time point with well-validated structured interviews. Adolescents in both clinical samples reported high co-occurrence of SITBs: most adolescents reported both lifetime nonsuicidal self-injury (NSSI) and suicidal thoughts. A similar temporal pattern of SITBs was reported in the two samples: thoughts of NSSI and suicide ideation had the earliest age-of-onset, followed by NSSI behaviors, suicide plans, and suicide attempts. However, the age-of-onset for each SITB was younger in the inpatient sample than in the outpatient sample. In terms of time lag between SITBs, suicide ideation occurred on average before initial engagement in NSSI, suggesting that pathways to NSSI and suicidal behavior may occur simultaneously rather than in succession from nonsuicidal to suicidal self-injury. Results also indicated that the time to transition between SITBs was relatively fast, and that a key period for intervention and prevention is within the first 6–12 months after the onset of suicidal thinking. Taken together, these findings have important implications for understanding the time-lagged relationship between nonsuicidal and suicidal self-injury.     

The neural effect of stimulus-response modality compatibility on dual-task performance: an fMRI study

Recent fMRI studies suggest that the inferior frontal sulcus (IFS) is involved in the coordination of interfering processes in dual-task situations. The present study aims to further specify this assumption by investigating whether the compatibility between stimulus and response modalities modulates dual-task-related activity along the IFS. It has been shown behaviorally that the degree of interference, as measured by dual-task costs, increases in modality-incompatible conditions (e.g. visual–vocal tasks combined with auditory–manual tasks) as compared to modality-compatible conditions (e.g. visual–manual tasks combined with auditory–vocal tasks). Using fMRI, we measured IFS activity when participants performed modality-compatible and modality-incompatible single and dual tasks. Behaviorally, we replicated the finding of higher dual-task costs for modality-incompatible tasks compared to modality-compatible tasks. The fMRI data revealed higher activity along the IFS in modality-incompatible dual tasks compared with modality-compatible dual tasks when inter-individual variability in functional brain organization is taken into account. We argue that in addition to temporal order coordination (Szameitat et al., 2002), the IFS is involved in the coordination of cognitive processes associated with the concurrent mapping of sensory information onto corresponding motor responses in dual-task situations.