Narcissists are not generally thought of as altruistic individuals. There are certain conditions, however, that may meet the needs of narcissistic individuals and thus elicit altruistic behavior. These conditions include recognition for the act, or adding to narcissists’ already high opinion of themselves through executing the act. Because narcissists also demonstrate impulsivity, it is also possible that a time pressure may induce narcissists as well as impulsive individuals to act altruistically. The aim of this study is to determine in what context, if any, narcissistic and impulsive individuals may display acts of altruism, specifically charitable giving. This study uses a 2 (recognized vs. unrecognized) x 2 (time limited vs. time unlimited) between groups design. Participants will complete a Stop Signal task, a charitable giving task in which recognition and time limit are manipulated, demographic questions, and two measures of narcissism. The expected results are that higher scores on overt narcissism will lead participants to donate in conditions in which they receive recognition for their donation. Higher scores on covert narcissism will lead participants to donate in conditions where they are not recognized. Individuals with higher impulsivity scores as determined by the Stop Signal task will donate in time pressured conditions over time unlimited. And furthermore, impulsivity will act as a mediator between narcissism and charitable giving in time-limited conditions. Finally, implications of these results and future directions for research are discussed.

The last few decades have seen a growing body of research on narcissism, however few studies have examined the relationship between subclinical narcissism and future orientation. The proposed study will examine how grandiose and vulnerable types of narcissism influence future orientation, and whether anxiety, depression, impulsivity and sense of control play mediating roles in this relationship. It is hypothesized that anxiety will play a mediating role between future orientation and vulnerable narcissism, but not between grandiose narcissism and future orientation. Finally, it is hypothesized that grandiose and vulnerable narcissism will be correlated within individuals. Structural Equation Modeling (SEM) will be used to test the hypotheses, and the a priori model is expected to have a good fit to the data. This study will further our understanding about how narcissists view their futures, and whether this is influenced by mediating factors.

Impulsivity and the effectiveness of a mindfulness-based intervention were explored in relation to improving behavioural self-regulation in adolescents with behavioural, emotional and social difficulties (BESD). A computerised choice task (CCT) was developed to measure delay discounting (a shift in choice from a larger reward to a smaller reward as the delay to the larger reward increases) in adolescents with BESD and compared it with several additional measures of impulsivity. The degree to which impulsivity and thoughts are related was explored using mindfulness measures. Effects of task type (computer versus sand-timer) and task context (school versus house) were also studied. Results suggested an effect of method but not location on discounting. Few between measure comparisons were significant, suggesting the possibility that different impulsivity measures assess different forms of impulsivity. However a significant negative correlation was found between impulsivity and mindfulness. A mindfulness-based intervention was implemented and results suggest potentially beneficial effects of applying mindfulness training to improve self-control and self-regulation in adolescents with BESD. Further research is necessary to determine the effectiveness of mindfulness training in adolescents with BESD, and explore differences between impulsivity measures to assist with effective measurement and intervention.

No description available.

A multidimensional model of associations between domestic violence exposure and risk of violence and prosocial behavior was tested in a sample of Colombian adolescents, with attention to impulsivity and substance use problems as mediators of these associations. A representative sample of 1,152 school youths and a convenience group of 148 juvenile offenders aged 11-19 years was recruited from Medellin, the second largest city in this South American country. Assessment was carried out in classrooms in the school sample and in correctional institutions for juvenile offenders. Structural Equation Modeling (SEM) was utilized to test the conceptually derived models. Similarly, multisample analyses and nested model comparisons were used to explore mediator effects. Results showed strong associations between domestic violence exposure and putative mediators and outcomes, especially among offenders. Though impulsivity and substance use problems mediated the relation between family violence (i.e., exposure to interparental violence) and adolescent maltreatment (i.e., harsh parenting) and violent and prosocial behavior in both groups, impulsivity exerted a greater effect on adjustment among juvenile offenders than their counterparts. Juveniles who reported less ability to inhibit their impulsive responses engaged in more problems related to illicit substance use, violent acts (e.g., carrying weapons at school and in the streets), and less prosocial activities with their peers. Nonetheless, the best model fit indexes were obtained when paths from impulsivity to substance use problems and violent behavior were added to model comparisons. Results are discussed within the framework of Information-Processing theory for understanding pathways to violent and prosocial behavior.

The subthalamic nucleus (STN), which is the most common target for deep brain stimulation for Parkinson's disease, is known to be crucially involved in motor control. Recent appreciation of the potential non-motor side effects of STN deep brain stimulation, however, has led to speculation that the importance of this nucleus may also relate to processes involved in decision- making, particularly during high conflict scenarios. This thesis concerns itself with investigating the STN's role in action selection during conflict. I begin by recording local field potentials directly from the STN of Parkinson's disease patients while they perform a flanker task that has been shown to elicit theta (4-8 Hz) band activity in areas of the prefrontal cortex involved in cognitive control. I report that like the prefrontal cortex, the STN demonstrates elevated theta activity during conflict. I then test whether STN theta activity is related to that of the prefrontal cortex by recording from both sites simultaneously while patients perform a novel task that temporally separates conflict from stimulus onset or movement. This reveals that theta activity indeed becomes synchronized during conflict, with cortical oscillations driving those of the STN. Thirdly, I investigate how STN oscillations may affect firing rate dynamics by intra-operatively recording local field potentials and single unit activity from patients performing the flanker task. I report that both theta and beta (15-30 Hz) oscillations entrain STN neurons, but only during conflict. Finally, I record cortical and STN activity while a fourth group of patients performs the flanker task. This experiment confirms that cortico-STN theta synchrony is elevated during conflict and may also relate to across-trial adaptations to conflict and errors. Taken together these studies shed light on the mechanisms by which cortical structures may influence the STN during conflict and why STN deep brain stimulation may result in impulsivity.

Title: Motor performance of pupils with attention deficit hyperactivity disorder (ADHD). Objectives: The aim of the work was to determine the level of fine and gross motor skills of upper extremities of the pupils with diagnosis ADHD at schools specialized on these pupils and compare it with the fine and gross motor skills of upper extremities of children without this diagnosis at common elementary school. Further work objective was to determine the level of gross motor skills of lower limbs and laterality of paired organs (hand - foot) within above mentioned groups of pupils. Methods: To determine the level of fine and gross motor skills of upper extremities, gross motor skills of lower limbs, laterality of the upper and lower extremities of the pupils with and without ADHD aged 9-11 years we used these types of tests: "Spiral", "Dotting test", "Beads" (the level of fine motor skills of the upper extremities); "Pack", "Small plate tapping", "Big plate tapping" (the level of gross motor skills of upper extremities); "Tapping the leg" (the level of gross motor skills of the lower limbs); "Typing out the Rhythm" (the laterality of the lower limbs); "Bell" and "Matches" (the laterality of the upper extremities). Results: The fine motor level of dominant hand was in the case of ADHD diagnosed pupils...

The aim of this study was to confirm the hypothesis of Eysenck proclaiming that the psychopaths are more extraverted than the ordinary population. The author reached the conclusion that Eysenck understood psychopathy as a concept similar to the dissocial personality disorder. Based on these grounds it was deemed reasonable to test the hypothesis on individuals with such a diagnosis. The author choose the Eysenck Personality Questionnaire (EPQ-R) and the 4Elements Questionnaire which allowed her to test the hypothesis with regards to the various aspects of the dimension of extraversion. The research confirmed that the individuals diagnosed with the dissocial personality disorder reach higher values on the scale measured by the EPQ-R than are the values shown for the general population. A significant positive correlation was also found between the scale of extraversion measured by the EPQ-R and the element of fire measured by the 4Elements test. However, no correlation was found between extraversion and the element of air. Based on these results the author concludes that the individuals with the dissocial personality disorder are more extraverted than the general population, primarily due to the higher scores in the items monitoring impulsivity, liveliness and ascendance.

This study tested dual-process decision-making models as predictors of between-person and within-person variation in risk-taking behavior. Additionally, the study integrated trait perspectives on self-control and impulsivity with decision-making processes to explain risk-taking. Participants were 580 college students ages 18 and older (M age = 20.45, range = 18 to 52 years). This study involved three parts. First, participants completed a survey assessing decision-making processes, self-control, impulsivity and risk-taking behavior. Second, a sub-set of participants completed laboratory-based measures of self-control and impulsivity. Third, participants completed a longitudinal online assessment of their risk-taking behavior. Dual-process models explained concurrent risk-taking, but only the reasoned decision-making process explained longitudinal risk-taking. The dual decision-making processes appear to operate through similar pathways, with components from each pathway exhibiting indirect effects through the other pathway. Impulsivity was linked to higher levels of risk-taking because of higher levels of behavioral intentions and willingness, whereas self-control was linked to lower levels of risk-taking because of lower levels of behavioral intentions. Between-person effects were as common as within-person effects, so future researchers are urged to consider decision-making processes averaged across forms of risk-taking and within each form of risk-taking. Altering decision-making pathways may be an effective way to intervene with individuals at high risk for engaging in risk-taking behavior.

Cognition (i.e. how individuals perceive, process and react to environmental cues) is fundamental to all animals’ life. Despite this, what explains variation in cognitive abilities is still mainly unclear. Environment is assumed to influences cognitive variation, but the mechanisms for this are still unknown. According to the social intelligence hypothesis, living in a group with a rich social environment, generate challenges that can enhance cognitive abilities. Impulsivity (to not be able to inhibit impulses), one aspect of cognition, may be influenced by the social environment, however this has not yet been experimentally tested. Impulsivity can complicate life, both for humans and animals. In humans, high levels of impulsivity and lack of self-control are associated with addictions and psychiatric disorders, thus is considered to be maladaptive. In animals, impulsivity correlates with stereotypies. To improve our understanding of impulsivity, I experimentally investigated how early social environment affects individual variation in impulsivity. To test this, red junglefowl chicks were used because their group living nature, and our accumulated knowledge on their cognition and behaviour. To manipulate the social environment, chicks either grew up in larger groups (with 17 individuals) or smaller groups (with 7 individuals). During the chicks’ first five weeks of life, three aspects of impulsivity were tested; impulsive action, persistence (in a detour reaching test) and routine formation (in a reversal learning test). Chicks that grew up in larger groups tended to perform less impulsive actions, while social environment did not explain variation in persistence. Chicks from larger groups had less strong routine formation compared to chicks raised in smaller groups. This partially supports the social intelligence hypothesis, and suggest that early social life can affect cognitive traits and explain individual variation in such.