Drive, reward sensitivity and the flattening of both.
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301 to 325 of 1,483Staff-student relationships and their impact on nursing students' belongingness and learning.
Aim: This paper is a report of selected findings from a study exploring the relationship between belongingness and placement experiences of preregistration nursing students.
Background: Staff-student relationships are an important influence on students' experiences of belongingness and their clinical learning. The need to belong is universal and pervasive, exerting a powerful influence on thought processes, emotions, behaviour, health and happiness. People deprived of belongingness are more likely to experience diminished self-esteem, increased stress and anxiety, depression and a decrease in general well-being. Nursing students' motivation and capacity to learn, self-concept, confidence, the extent to which they are willing to question or conform to poor practice and their future career decisions are influenced by the extent to which they experience belongingness.
Method: During 2006, 1…
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Longitudinal association of adolescents' sense of coherence with tooth-brushing using an integrated behaviour change model.
Objective: To determine the association between adolescents' sense of coherence (SOC) and their tooth-brushing behaviour.
Methods: This 18-month longitudinal study involved a representative sample of 8th-graders (n = 1025) from 11 randomly selected public high schools in the Limpopo Province, South Africa. Data collected by means of a self-administered questionnaire included respondents' socio-demographic profiles, vulnerability to depression, smoking status, dental treatment attendance pattern, frequency of and motivation for tooth-brushing. Based on the responses to the question on readiness to change brushing behaviour and in line with the integrated change model, respondents were also categorized as being in the pre-contemplation, contemplation or preparation/action stages. Respondents' SOC was measured using a six-item adapted Antonovsky SOC scale. Data analysis included chi-squared…
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Acceptance and commitment therapy for smoking cessation: a preliminary study of its effectiveness in comparison with cognitive behavioral therapy.
This controlled preliminary trial determined the feasibility and initial effectiveness of a promising behavioral intervention for smoking: Acceptance and Commitment Therapy (ACT). In a quasi-experimental design, the ACT intervention condition used metaphors and experiential exercises focused on personal values to motivate quitting smoking and enhancing the willingness to experience internal cues to smoke (e.g., urges) and abstinence-related internal distress. The comparison condition was cognitive behavioral therapy (CBT)--the current standard in behavioral intervention for smoking cessation. Each treatment was delivered in seven weekly 90-min sessions in a group format to 81 (43 in ACT; 38 in CBT) adult smokers. Results show that the ACT treatment was as feasible as the CBT treatment. They also demonstrate promising evidence of ACT's effectiveness: 30.2% intent-to-treat biochemically-su…
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Bembenutty H (2009)cohort or longitudinalMEDLINE-indexed journal, not yet read by usPsychological reports11 citations Academic delay of gratification, self-efficacy, and time management among academically unprepared college students.
This study examined the associations between academic delay of gratification, self-efficacy beliefs, and time management among academically unprepared college students participating in a summer-immersion program. This study also examined whether the relation of self-efficacy with time management is mediated by academic delay of gratification. Analysis indicated that self-efficacy was directly associated with time management, as delay of gratification served to mediate this effect partially. Self-efficacy emerged as the strongest positive predictor of academic achievement.
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The influence of social variables and moral disengagement on prosocial and antisocial behaviours in field hockey and netball.
In this study, we examined: (a) the effects of perceived motivational climate and coaching character-building competency on prosocial and antisocial behaviours towards team-mates and opponents in field hockey and netball; (b) whether the effects of perceived character-building competency on sport behaviours are mediated by moral disengagement; and (c) whether these relationships are invariant across sport. Field hockey (n = 200) and netball (n = 179) players completed questionnaires assessing the aforementioned variables. Structural equation modelling indicated that mastery climate had positive effects on prosocial and negative effects on antisocial behaviour towards team-mates, while performance climate had a positive effect on antisocial behaviour towards team-mates. Perceived character-building competency had a positive effect on prosocial behaviour towards opponents and negative effe…
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Depressive personality disorder, dysthymia, and their relationship to perfectionism.
This paper reports the results of two studies in a nonclinical (n=105) and primary care outpatient sample (n=110), in which Depressive Personality Disorder (DPD), Dysthymia, and depression were assessed for their distinctive relationship with perfectionism. Results from both studies found that self-reported DPD, Dysthymia, and depressive symptoms were all intercorrelated, and that DPD, Dysthymia, and depressive symptoms were correlated with three dimensions of perfectionism-Concern over Mistakes, Doubts about Actions, and Parental Criticism. In the nonclinical sample, variance in measures of DPD was predicted by measures of perfectionism after controlling for depression and Dysthymia symptoms. A similar pattern of findings was observed in the primary care sample. This relationship with perfectionism did not occur when Dysthymia or depressive symptoms were predicted. Nevertheless, much of…
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Motivations for self-injury in an adolescent inpatient population: development of a self-report measure.
Objective: The aim of this study was to develop and pilot an instrument for the assessment of self-injury in adolescent inpatients.
Methods: The Self-Injury Motivation Scale was modified for use in adolescents. Thirty-eight consenting adolescent inpatients with a history of self-injury completed the Self-Injury Motivation Scale-Adolescent version (SIMS-A) and the Self-Injury Interview (SII) to collect information about a range of factors associated with self-injury, other clinical variables and demographic details.
Results: The SIMS-A was acceptable to this adolescent sample and motivations for self-injury were similar to those of adults using the original SIMS scale. Adolescents were, however, more likely to use self-injury for communicating to/influencing others compared to adults. The participants most frequently reported self-injury by hitting, cutting and burning. The clinical diagn…
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Manipulation and force as sexual coercion tactics: conceptual and empirical differences.
This study examines the relationship between perpetrator characteristics, situational characteristics, and type of sexual coercion tactics used to obtain sexual contact (including sexual intercourse) with an unwilling partner. Men who used manipulation or force were compared to each other and to men who engaged in only consensual sex. Participants were college men drawn from the first wave of a 5-year longitudinal study. Stepwise discriminant function analyses, univariate analyses of variance (ANOVA), and chi(2) analyses tested group differences. As predicted, men who used force reported more childhood sexual abuse, witnessed more domestic violence, were more accepting of male violence, and were less likely to endorse love as a motive for sex than men in both the manipulation and consent groups. Men in the force group were also more likely to have had a casual relationship with the woman…
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Effect of religion on suicide attempts in outpatients with schizophrenia or schizo-affective disorders compared with inpatients with non-psychotic disorders.
Little is known of the relations between psychosis, religion and suicide. One hundred and fifteen outpatients with schizophrenia or schizo-affective disorder and 30 inpatients without psychotic symptoms were studied using a semi-structured interview assessing religiousness/spirituality. Their past suicide attempts were examined. Additionally, they were asked about the role (protective or incentive) of religion in their decision to commit suicide. Forty-three percent of the patients with psychosis had previously attempted suicide. Religiousness was not associated with the rate of patients who attempted suicide. Twenty-five percent of all subjects acknowledged a protective role of religion, mostly through ethical condemnation of suicide and religious coping. One out of ten patients reported an incentive role of religion, not only due to negatively connotated issues but also to the hope for…
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More than nation and knowledge: cultural micro-diversity and organ donation in Switzerland.
Objective: While recent studies of organ donation have recognized cultural factors, most analyses in developed countries have focused on awareness as the critical constraint. The present paper examines this assumption and assesses the number of potential organ donors as well as their knowledge and attitudes regarding organ donation.
Methods: We conducted a telephone survey of 1509 adults using a stratified random sample of the main three language groups (German, French, and Italian) in Switzerland with oversampling of the Italian language group to compensate for its relatively small size. Because our analyses are performed separately on each language group, the oversampling does not distort our findings.
Results: The three language groups display substantial differences with respect to patterns of knowledge, motives, and concerns underlying their willingness to donate organs--differences…
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Dynamic shifts in corticostriatal expression patterns of the immediate early genes Homer 1a and Zif268 during early and late phases of instrumental training.
Adaptive motor actions require prior knowledge of instrumental contingencies. With practice, these actions can become highly automatic in nature. However, the molecular and anatomical substrates mediating these related forms of learning are not understood. In the present study, we used in situ hybridization to measure the mRNA levels of two immediate early genes (IEGs) in an instrumental paradigm where rats learned to lever-press for food. We report that after three training sessions, Homer 1a and Zif268 (an effector and regulatory IEG, respectively) were significantly induced within an extensive corticostriatal network relative to untrained controls. With extended training (23 sessions), however, a shift in the expression patterns of the two genes was evident. Expression of Homer 1a (official symbol Homer1) decreased significantly in frontal and cingulate cortices, whereas striatal expr…
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Comparison of urban and rural general surgeons: motivations for practice location, practice patterns, and education requirements.
Background: The purpose of this study is to determine the differences between rural and urban surgeons with regard to practice patterns, factors in choosing a practice location, and educational needs.
Study design: A list of surgeons obtained from the American Medical Association was examined using the Office of Management and Budget definition of rural. Seventeen hundred rural surgeons were mailed surveys; 421 responded. One hundred fourteen urban surgeons were contacted by telephone. Questions were designed to measure job and community satisfaction, factors influencing their decision to practice in their current location, spectrum and volume of cases, and their perceived educational needs.
Results: Age distribution did not differ markedly between urban and rural surgeons. Motivation to practice in their current location varied considerably between urban and rural surgeons. Both groups …
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21st century neurobehavioral theories of decision making in addiction: Review and evaluation.
This review critically examines neurobehavioral theoretical developments in decision making in addiction in the 21st century. We specifically compare each theory reviewed to seven benchmarks of theoretical robustness, based on their ability to address: why some commodities are addictive; developmental trends in addiction; addiction-related anhedonia; self-defeating patterns of behavior in addiction; why addiction co-occurs with other unhealthy behaviors; and, finally, means for the repair of addiction. We have included only self-contained theories or hypotheses which have been developed or extended in the 21st century to address decision making in addiction. We thus review seven distinct theories of decision making in addiction: learning theories, incentive-sensitization theory, dopamine imbalance and systems models, opponent process theory, strength models of self-control failure, the c…
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Pizzagalli DA (2014)reviewMEDLINE-indexed journal, not yet read by usAnnual review of clinical psychology826 citations Depression, stress, and anhedonia: toward a synthesis and integrated model.
Depression is a significant public health problem, but its etiology and pathophysiology remain poorly understood. Such incomplete understanding likely arises from the fact that depression encompasses a heterogeneous set of disorders. To overcome these limitations, renewed interest in intermediate phenotypes (endophenotypes) has resurfaced, and anhedonia has emerged as one of the most promising endophenotypes of depression. Here, a heuristic model is presented postulating that anhedonia arises from dysfunctional interactions between stress and brain reward systems. To this end, we review and integrate three bodies of independent literature investigating the role of (a) anhedonia, (b) dopamine, and (c) stress in depression. In a fourth section, we summarize animal data indicating that stress negatively affects mesocorticolimbic dopaminergic pathways critically implicated in incentive motiv…
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Anhedonia revisited: is there a role for dopamine-targeting drugs for depression?
It is 16 years since we reviewed anhedonia in depression. Since then, there have been important developments in the study of anhedonia, mainly using the new techniques that neuroimaging made available, which provide very interesting new insights. It is becoming increasingly apparent that anhedonia, with psychomotor retardation, defines a dimension in depressive disorder that seems to be distinct from a dimension encompassing mood plus somatic symptoms. These dimensions can coexist, but may also be present separately. The first appears associated with disturbances (under-functioning) in dopamine function; the other appears to be related to a similar under-functioning in the serotonin system. Furthermore, anhedonia itself increasingly appears to be a composite symptom, consisting of at least two dimensions (i.e. a motivational/appetitive and a consummatory one). Depression appears to be ch…
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Fractionating Blunted Reward Processing Characteristic of Anhedonia by Over-Activating Primate Subgenual Anterior Cingulate Cortex.
Anhedonia is a core symptom of depression, but the underlying neurobiological mechanisms are unknown. Correlative neuroimaging studies implicate dysfunction within ventromedial prefrontal cortex, but the causal roles of specific subregions remain unidentified. We addressed these issues by combining intracerebral microinfusions with cardiovascular and behavioral monitoring in marmoset monkeys to show that over-activation of primate subgenual anterior cingulate cortex (sgACC, area 25) blunts appetitive anticipatory, but not consummatory, arousal, whereas manipulations of adjacent perigenual ACC (pgACC, area 32) have no effect. sgACC/25 over-activation also reduces the willingness to work for reward. 18F-FDG PET imaging reveals over-activation induced metabolic changes in circuits involved in reward processing and interoception. Ketamine treatment ameliorates the blunted anticipatory arousa…
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Psychological processing in chronic pain: a neural systems approach.
Our understanding of chronic pain involves complex brain circuits that include sensory, emotional, cognitive and interoceptive processing. The feed-forward interactions between physical (e.g., trauma) and emotional pain and the consequences of altered psychological status on the expression of pain have made the evaluation and treatment of chronic pain a challenge in the clinic. By understanding the neural circuits involved in psychological processes, a mechanistic approach to the implementation of psychology-based treatments may be better understood. In this review we evaluate some of the principle processes that may be altered as a consequence of chronic pain in the context of localized and integrated neural networks. These changes are ongoing, vary in their magnitude, and their hierarchical manifestations, and may be temporally and sequentially altered by treatments, and all contribute…
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Reward-related eating, self-regulation, and weight change in pregnancy and postpartum: the Pregnancy Eating Attributes Study (PEAS).
Background/objectives: Reward-related eating is hypothesized to underlie risk for weight gain in obesogenic environments, but its role is unknown during pregnancy and postpartum when weight change is normative, but excess weight gain and weight retention are common. This study examined associations of self-reported reward-related eating, self-regulation, and the home food environment with excessive gestational weight gain (GWG) and postpartum weight change.
Subjects/methods: Participants in the Pregnancy Eating Attributes Study observational cohort were enrolled at ≤12 weeks pregnancy and followed through 1-year postpartum (458 recruited; 367 retained through delivery). Participants completed four measures of reward-related eating-Modified Yale Food Addiction Scale, Power of Food Scale, Multiple Choice Procedure, and a Reinforcing Value of Food Questionnaire; two measures of self-regulat…
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The accelerator, the brake, and the terrain: associations of reward-related eating, self-regulation, and the home food environment with diet quality during pregnancy and postpartum in the pregnancy eating attributes study (PEAS) cohort.
Background: Neurobehavioral factors, including reward-related eating and self-regulation, in conjunction with the food environment, may influence dietary behaviors. However, these constructs have not been examined in pregnancy and postpartum, a time of changing appetite and eating behaviors, and when dietary intake has implications for maternal and child health. This study examined associations of reward-related eating, self-regulation, and the home food environment with pregnancy and postpartum diet quality.
Methods: Participants in the Pregnancy Eating Attributes Study observational cohort were enrolled at ≤12 weeks gestation and followed through one-year postpartum. Pregnancy and postpartum Healthy Eating Index-2015 (HEI-total), and adequacy and moderation scores, respectively, were calculated by pooling 24-h diet recalls administered each trimester and during 2, 6, and 12 months post…
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Compulsivity in obsessive-compulsive disorder and addictions.
Compulsive behaviors are driven by repetitive urges and typically involve the experience of limited voluntary control over these urges, a diminished ability to delay or inhibit these behaviors, and a tendency to perform repetitive acts in a habitual or stereotyped manner. Compulsivity is not only a central characteristic of obsessive-compulsive disorder (OCD) but is also crucial to addiction. Based on this analogy, OCD has been proposed to be part of the concept of behavioral addiction along with other non-drug-related disorders that share compulsivity, such as pathological gambling, skin-picking, trichotillomania and compulsive eating. In this review, we investigate the neurobiological overlap between compulsivity in substance-use disorders, OCD and behavioral addictions as a validation for the construct of compulsivity that could be adopted in the Research Domain Criteria (RDoC). The r…
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Behavioral economic decision making and alcohol-related sexual risk behavior.
The discipline of behavioral economics integrates principles from psychology and economics to systematically characterize decision-making preferences. Two forms of behavioral economic decision making are of relevance to HIV risk behavior: delay discounting, reflecting preferences for immediate small rewards relative to larger delayed rewards (i.e., immediate gratification), and probability discounting, reflecting preferences for larger probabilistic rewards relative to smaller guaranteed rewards (i.e., risk sensitivity). This study examined questionnaire-based indices of both types of discounting in relation to sexual risk taking in an emergency department sample of hazardous drinkers who engage in risky sexual behavior. More impulsive delay discounting was significantly associated with increased sexual risk-taking during a drinking episode, but not general sexual risk-taking. Probabilit…
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Delay of gratification by orangutans (Pongo pygmaeus) in the accumulation task.
There is considerable evidence indicating that chimpanzees can delay gratification for extended time intervals, particularly in the accumulation task in which food items accumulate within a participant's reach until the participant begins to consume them. However, there is limited evidence that other ape species might also exhibit this capacity, despite there being a number of similar studies indicating that nonape species (e.g., monkeys and birds) can delay gratification, but not for nearly as long as chimpanzees. To help define the taxonomic distribution of delay of gratification behavior in the order Primates, we tested 6 orangutans in the current experiments and compared their performance with comparable data from a previous study with capuchin monkeys. We varied delay length and visibility of the items that were still available for accumulation to determine the impact of these facto…
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Predictive validity of delay discounting behavior in adolescence: a longitudinal twin study.
A standard assumption in the delay discounting literature is that individuals who exhibit steeper discounting of hypothetical rewards also experience greater difficulty deferring gratification to real-world rewards. There is ample cross-sectional evidence that delay discounting paradigms reflect a variety of maladaptive psychosocial outcomes, including substance use pathology. We sought to determine whether a computerized assessment of hypothetical delay discounting (HDD) taps into behavioral impulsivity in a community sample of adolescent twins (N = 675). Using a longitudinal design, we hypothesized that greater HDD at age 14-15 predicts real-world impulsive choices and risk for substance use disorders in late adolescence. We also examined the genetic and environmental structure of HDD performance. Individual differences in HDD behavior showed moderate heritability, and were prospective…
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Reduced salience and default mode network activity in women with anorexia nervosa.
Background: The neurobiology of anorexia nervosa is poorly understood. Neuronal networks contributing to action selection, self-regulation and interoception could contribute to pathologic eating and body perception in people with anorexia nervosa. We tested the hypothesis that the salience network (SN) and default mode network (DMN) would show decreased intrinsic activity in women with anorexia nervosa and those who had recovered from the disease compared to controls. The basal ganglia (BGN) and sensorimotor networks (SMN) were also investigated.
Methods: Between January 2008 and January 2012, women with restricting-type anorexia nervosa, women who recovered from the disease and healthy control women completed functional magnetic resonance imaging during a conditioned stimulus task. Network activity was studied using independent component analysis.
Results: We studied 20 women with anore…
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Blockade of hypocretin receptor-1 preferentially prevents cocaine seeking: comparison with natural reward seeking.
Hypothalamic orexin/hypocretin (Orx/Hcrt) peptides participate in the regulation of a wide range of physiological processes and are recruited by drugs of abuse. To advance our understanding of the potential of the Orx/Hcrt receptor-1 (Hcrt-r1) as a treatment target for cocaine addiction, the effect of SB334867 [N-(2-methyl-6-benzoxazolyl)-N'-1,5-n-aphthyridin-4-yl urea], a specific Hcrt-r1 antagonist, on reinstatement elicited by cocaine-associated stimuli versus stimuli associated with a highly palatable conventional reinforcer [sweetened condensed milk (SCM)] was tested. Two separate groups of male Wistar rats were trained to associate a discriminative stimulus (S⁺) with the response-contingent availability of cocaine (0.25 mg/0.1 ml/infusion) or SCM [2/1 (v/v)] and subjected to reinstatement tests following extinction of cocaine-reinforced or SCM-reinforced behavior, during which the …
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