Mindfulness meditation is known to improve attention, and neuroscience appears to be a field that can elucidate how mindfulness meditation achieves such an outcome. However, studies on mindfulness meditation have been criticized for a low methodological quality. Thus the current paper aimed to provide a literature review on the neural basis of the effects of mindfulness meditation on attention. Additionally, there was a critical examination of this research to evaluate factors that might compromise the validity of the research. The scope of the thesis was limited to studies on healthy adults using fMRI and on studies that incorporate the generally accepted elements of mindfulness meditation. A total of 17 cross-sectional and two longitudinal studies were reviewed with 510 participants in all. The main result of this literature review were that changes were observed in the mPFC. Furthermore, activation was seen in the insula, prefrontal areas and the ACC. Some of the interpretations of the selected studies were in conflict with each other. This can perhaps be explained by differences in neural activation depending on how experienced the subjects are in mindfulness meditation practices. Some prevalent methodological issues with the studies were small sample sizes, cross-sectional design, and poor or unclear instructions (e.g., not describing the instructions or the mantra employed). There were also more general problems regarding functional neuroimaging. These included movement artefacts and cardiovascular effects. However, based on the 19 studies reviewed in this paper there is tentative evidence for the beneficial effects of mindfulness meditation on attention.

Medication compliance/noncompliance was examined in context of: severity of symptoms; medical side effects; medication education; perceived stigma; and effects on family/social support system. A null hypothesis was formulated for each correlate, stating that those patients who reported a high level of an independent variable (IV) would not be any more likely to discontinue their medication than patients who reported a low level of an IV. To obtain data, a medical usage questionnaire and a depression, assessment (OQT"-45.2) were used. Statistical significance was not obtained for any of the hypothesized relationships but trends were consistent with the established literature. The implication points to the efficacy of relational therapy as a conjunct to the medical treatment of depression.

Rates of lumbar fusion surgery have been increasing with an estimated 192,000 procedures performed annually. However, satisfactory outcomes of lumbar fusion vary considerably and often emphasize technical success, such as arthrodesis, rather than Ill functional and quality of life outcomes. Interbody cage fusion was recently developed and touted as a superior alternative to existing lumbar fusion procedures. There is, however, a paucity of research to support these claims, particularly with regards to functional and quality of life outcomes. Moreover, predictive correlates of outcomes for interbody cage fusion have not been given adequate attention in the literature. The aims of this study were to characterize patients undergoing this new procedure, examine functional and multidimensional outcomes, and investigate the predictive efficacy of presurgical variables. A retrospective cohort research design was employed and entailed medical record reviews for presurgical data and telephone outcome surveys at least 18 months following surgery. Seventy-three patients who had undergone lumbar interbody cage fusion were identified from the private practice of an orthopedic surgeon and the Workers' Compensation Fund of Utah. Presurgical variables coded for analysis included age at the time of surgery, severity rating of presurgical spinal pathology, smoking tobacco, depression, and pursuing litigation at the time of surgery. Of the total sample, 56 patients (76.7%) completed outcome surveys that assessed patient satisfaction, back-specific functioning, disability status, and physical and mental health functioning. While arthrodesis was achieved for most patients (84%), almost half were dissatisfied with their current back condition. Outcomes regarding disability and functioning were mixed. Arthrodesis was only moderately associated with better outcome and for a quite limited set of measure s. Three of the five presurgical variables (tobacco use, depression, and litigation) were consistently predictive of patient outcomes. Findings are discussed and compared to existing data on lumbar fusion procedures , and clinical implications for improved patient selection and possible interventions are highlighted. Consideration is given to the limitations of this study, such as retrospective design, no matched controls , and sample size. Directions for future research are suggested.

Gambling disorder is today a common disorder causing lives to shatter. As this disorder activates the reward system and increases the need of dopamine, recovering from gamling disorder can be hard. Research has shown that gambling addiction appears to have similarities to substance abuse, but no substance has been named. Therefore, this systematic review discusses similarities and differences between gambling and opioid addiction. The aim is to compare behavior and neurological correlates of gambling and opioid addiction tocreate a better understanding of the relationship between these addictions and hopefully help improve treatments. My expectation was that I would find behavioral and neurological similarities between opioid and gambling addicts. To investigate this, I conducted a systematic search across databases. I compared six studies which all used a task to investigate decision-making ability and brain-scanning to investigate neural correlates. Both gambling and opioid addicts show decreased activation in the orbitofrontal cortex, which plays a central role in decision-making. Regarding task performance, some studies showed addicts to perform worse than controls, suggesting that addicts show an impaired decision-making ability compared to controls. This systematic review contributes to the literature within addiction, but to draw a conclusion that gambling and opioid addicts suffer from similar decision-making impairment further research is needed.

Researchers have recognized that social withdrawal in early childhood is a complex and multifaceted construct which includes three main observed subtypes: reticence, solitary-passive withdrawal, and solitary-active withdrawal. Each is differentially associated with children's behavioral outcomes in Western societies (e.g., United States, Canada). Furthermore, potential gender differences may exist regarding the distinct associations between non-social behavior and indices of maladjustment across boys and girls due to differential societal and cultural gender-role expectations. Previous studies suggest that subtypes of observed social withdrawal can be identified in Chinese preschoolers. It is important to examine the behavioral correlates of observed withdrawn subtypes in the Chinese cultural context due to the social-cultural variations in what is considered as socially acceptable/adaptable behaviors between North America and China. Therefore, the purpose of this study was to examine the various behavioral correlates of different forms of nonsocial play among Chinese preschoolers and potential gender differences in the linkages. Teachers of 506 preschoolers from two cities in mainland China completed a battery of questionnaires that assessed various aspects of child behavioral outcomes in early childhood, including social withdrawal, assertiveness-prosociability, aggression, impulsive/disruptive behaviors, and anxiousness. Measurement models estimated with two-group confirmatory factor analyses yielded invariant factor structures for boys and girls for each of the behavioral measures. Distinct patterns of associations were found among behavioral correlates of subtypes of observed social withdrawal across boys and girls. Solitary-passive play was negatively associated with prosocial behaviors for girls and boys, positively related to impulsive behaviors for girls and boys, and negatively associated with victimization and anxious behavior for girls, but not boys. Solitary-active play was found to be negatively related to prosocial behaviors, positively associated with physical aggression, victimization, impulsive, and anxious behavior for girls and boys. Reticence was associated with less prosocial behavior for boys and girls. It was also positively associated with victimization, impulsiveness, and anxious behaviors for girls (but not boys). These gender difference findings and their implications for child adjustment in the Chinese cultural context are discussed.

Study abroad (SA) is typically thought to provide an excellent opportunity for second language acquisition, particularly through exposure to and application of the target language within the target culture. However, actual language gains vary greatly among SA participants and some may gain very little (Freed, 1995a). The purpose of the current study is to determine some specific linguistic gains made by 28 second language learners of Japanese studying for two semesters in Japan, and to determine possible correlates with these gains. Specifically, it addresses whether or not these SA students improve their grammatical proficiency, lexical proficiency, narrative ability, fluency, and pragmatics proficiency. It then explores how language learning aptitude, personality, language use, social networking, and initial ability correlate with those gains. To measure these gains and their correlates it uses the following instruments: the Elicited Imitation task, a picture story, the Pragmatics Self-Assessment, the Non-Word Repetition test, the NEO-Five Factor Inventory, the Language Contact Profile, and the Study Abroad Social Interaction Questionnaire. The results indicated that these SA students improved significantly in at least on measure of grammatical proficiency, lexical proficiency, narrative ability, fluency, and pragmatics proficiency. Initial ability and language use proved to correlate best with each area of linguistic gain; however, the other correlates were also related in certain areas. SA students should prepare to use their language and participate in social networks to best improve their linguistic abilities.

No description available.

No description available.

Many methodologies have been used to generate false memories, with the misinformation (MI) paradigm and the Deese-Roediger-McDermott (DRM) paradigm being the most commonly studied. The MI paradigm generates false memories based on retroactive interference across episodes, while the DRM paradigm generates false memories based on semantic similarities across stimuli. Since current research is ambiguous about whether the processes for different types of false memories are similar, the purpose of this project was to compare the neural mechanisms between MI and DRM false memories. We used a novel paradigm to limit methodological differences, while maintaining the defining characteristics of each paradigm. We made ERP predictions for false memories in both paradigms based on four current cognitive theories of false memories: fuzzy-trace theory, spreading activation/monitoring theory, global matching models, and source of activation confusion (SAC) model. We found no LPC, FN400, or N2 neural differences between the two types of false memories. This result is discussed in the context of the theories and the implications about our understanding of false memories. Our results support that there may not be mechanistic differences in false memory recollection when paradigms to produce the false memories are similar. / Ph. D. / Many methodologies have been used to generate false memories (or retrieval of an incorrect detail of an experienced event), with the misinformation (MI) paradigm and the Deese-Roediger-McDermott (DRM) paradigm being the most commonly studied. The MI paradigm generates false memories based on incorrectly described details provided by the experimenter across episodes, while the DRM paradigm generates false memories based on semantic similarities across lists of words. Since current research is ambiguous about whether the processes for different types of false memories are similar, the purpose of this project was to compare the MI and DRM false memories. We used a novel paradigm to limit differences driven by different methods, while maintaining the defining characteristics of each paradigm. The four current memory theories informed our event-related potential (time-locked electroencephalogram) predictions. The four theories are fuzzy-trace theory, spreading activation/monitoring theory, global matching models, and source of activation confusion (SAC) model. We found no late positive component (an ERP component indicating recollective processes), FN400 (an ERP component indicating familiarity processes), or N2 (an ERP component indicating conflict) differences between the two types of false memories. This result is discussed in the context of these theories and the implications about our understanding of false memories. Our results support that there may not be differences in false memory recollection when paradigms to produce the false memories are similar.

Mental toughness has received extensive research attention in recent years because of its intuitive and theoretical association with successful performance. However, several significant omissions in understanding remained. This thesis aimed to address these gaps through various research approaches and methodologies, collectively resulting in a biopsychological perspective. The primary objectives were to provide a more holistic perspective of mental toughness and generate quantitative support for the various biological (2D:4D) cognitive-affective (self-structure), physiological (cortisol response) and behavioural (performance) differences that have been associated with the construct. The findings suggested that mental toughness is a multifaceted construct and manifests in several areas of human functioning; specifically, a particular cognitive-affective profile may underlie mental toughness (they possess a positive self-concept and a particular self-structuring style, namely integration). Furthermore, levels of cortisol during a competitive event (a physiological indicator of perceived stress levels) were significantly negatively related to mental toughness, suggesting that mentally tough individuals have a reduced perception of threat in competitive situations (giving support for the notion that they perceive competition or stress as a potential challenge for personal growth and improvement). An objective marker of mental toughness was also supported; specifically, 2D:4D ratio (indicative of prenatal testosterone levels) related significantly with scores on a mental toughness scale, giving support for the biological underpinning of the construct and an objective marker of mental toughness. Finally, two case examples are provided to demonstrate the usability of these important markers (cognitive, biological and physiological) in an applied context.