Self-initiated Behavior Research Articles

Predicting Self-Initiated Preventive Behavior Against Epidemics with an Agent-Based Relative Agreement Model

Human self-initiated behavior against epidemics is recognized to have significant impacts on disease spread. A few epistemic models have incorporated self-initiated behavior, and most of them are based on a classic population-based approach, which assumes a homogeneous population and a perfect mixing pattern, thus failing to capture heterogeneity among individuals, such as their responsive behavior to diseases. This article proposes an agent-based model that combines epidemic simulation with a relative agreement model for individual self-initiated behavior. This model explicitly represents discrete individuals, their contact structure, and most importantly, their progressive decision making processes, thus characterizing individualized response to disease risks. The model simulation and sensitivity analysis show the existence of critical points (threshold values) in the model parameter space to control influenza epidemic including minimum values for the initially positive population size, the communication rate, and the attitude uncertainty. These threshold effects shed insights on preventive strategy design to deal with the current circumstances that new vaccines are often insufficient to combat emerging communicable diseases.

Caring Behaviors Among Student Nurses Interacting in Scenario-Based High Fidelity Human Patient Simulation

Important questions remain around the increased use of simulation in nursing education and the development of caring competencies. An observational study of 105 nursing students was conducted to explore the caring behaviors demonstrated during simulations and to examine the affordances and limitations of the simulation milieu to support development of caring competencies. The McDaniel (1990) instrument was adapted for scoring caring behaviors. A majority of participants exhibited passive caring behaviors. Self-initiated and transpersonal caring behaviors occurred in low frequency. Caring is important to patient health, satisfaction, and quality healthcare. Recommendations to support development of caring behaviors in simulation are offered.

Proactivity at work: Novel perspectives on effectiveness and social context

Proactivity refers to self-initiated behavior aimed at bringing about change in order to create a different future. Research to date has shown that a proactive approach to work generally has positi...

Autobiographically recalled emotional states impact forward gait initiation as a function of motivational direction.

The impact of self-generated affective states on self-initiated motor behavior remains unspecified. The purpose of the current study was to determine how self-generated emotional states impact forward gait initiation. Participants recalled past emotional experiences (anger, fear, happy, sad, and neutral), "relived" those emotional memories before gait initiation (GI), and then walked ∼4 m across the laboratory floor. Kinetic and kinematic data revealed GI characteristics consistent with a motivational direction hypothesis. Specifically, participants produced greater posterior-lateral displacement and velocity of their center of pressure (COP) during the initial phase of GI after self-generation of happy and anger emotional states relative to sad ones. During the second phase of GI, greater medial displacement of COP was found during the happy condition compared with sad, greater velocity was occasioned during happy and angry trials compared with sad, and greater velocity was exhibited after happy compared with fear memories. Finally, greater anterior velocity was produced by participants during the final phase of GI for happy and angry memories compared with sad ones. Steady state kinetic and kinematic data when recalling happy and angry memories (longer, faster, and more forceful stepping behavior) followed the anticipatory postural adjustments noted during GI. Together the results from GI and steady state gait provide robust evidence that self-generated emotional states impact forward gait behavior based on motivational direction. Endogenous manipulations of emotional states hold promise for clinical and performance interventions aimed at improving self-initiated movement.

L’apathie dans la schizophrénie : une revue clinique et critique de la question

Today the concept of apathy is subject to many questions. This psychological state is present and predominant in different disorders such as neurodegenerative and psychiatric diseases or neurological acquired disorders. Apathy is a part of the clinical vocabulary, however, we can note that in the literature there remains confusion in its definition, and we can find an amalgam with other clinical symptoms. The aim of this review is to provide a clarification of the concept of apathy in clinical practice in schizophrenia as well as to highlight the gaps that exist. Apathy belongs to the negative symptoms of schizophrenia. For its understanding, it is necessary to define apathy as a multidimensional syndrome (cognitive, emotional, and behavioral) manifesting as a quantitative reduction of voluntary behaviors directed toward one or several goals. However, at present, we are witnessing a reductionist and simplistic conception of the syndrome of apathy and this especially in the Anglo-Saxon literature. Several authors reduce apathy to its behavioral component, so in other words, to avolition/amotivation. Avolition refers to a loss of self-initiated and spontaneous behaviors. In this definition only observable behavior is taken into account and not the underlying mechanisms (cognitive and emotional). In order to understand the syndrome of apathy, it is necessary to have a holistic and multidimensional outlook. Some authors have proposed diagnostic criteria for apathy by taking into account the different dimensions of apathy. Moreover not only is apathy confused with avolition, but it is also still difficult to distinguish it from depression. Apathy and depression share common clinical signs (i.e. loss of interest), but they also have distinct clinical signs (lack of motivation for apathy, and suicidal ideation for depression). Authors have shown that the presence of one symptom (apathy or depression) does not predict the presence of the other. An apathetic patient does not have to be necessarily in a depressive state and vice versa. However, to our knowledge, there is no data capable of distinguishing depression from apathy in schizophrenia, and knowing what is the part of one and the other when the patient has both symptoms. In addition, we can see that the confusion that persists between those two symptoms also stems from assessment tools. Indeed, some assessment tools such as the Montgomery and Asberg Depression Rating Scale (MARDS) have an apathy subscale. Therefore, this scale does not only evaluate depression. Regarding the assessment of apathy in schizophrenia, there are specific and nonspecific tools. Nonspecific tools define apathy differently. For this reason, authors have proposed to measure apathy by using analytic factors of negative symptoms. In this case, apathy is going to be assessed by the factor "motivation/pleasure" including anhedonia, asociality and avolition. This factor will provide the possibility of a better assessment of apathy. Concerning specific scales (like AES), there are gaps such as a lack of standardization in the execution and the quotation. Furthermore, no scale takes into account the factors causing apathy. Knowing the reasons for apathy is necessary because this syndrome is frequent in schizophrenia, and it is found in the different phases of this disease (prodromal, first episode psychosis, and chronic). In addition, apathy has significant functional consequences on the patient's quality of life, as well as on his or her global functioning. Indeed, apathy impacts on his or her social and professional life. Patients with schizophrenia have a loss of autonomy, less employment and social withdrawal. Consequently, interest in its drug or treatment it is obvious. However, drug and non-drug treatments are not specific to apathy and therefore little effective on this syndrome. Implications to stimulate future research are presented.

Post-Stroke Apathy: An Exploratory Longitudinal Study

Introduction: Post-stroke apathy is a disturbance of motivation evidenced by low initiative, difficulties in starting, sustaining or finishing any goal-directed activity, low self-activation or self-initiated behavior and emotional indifference. Apathy is a common behavioral disturbance in stroke survivors. We aimed to analyze the relationship between post-stroke apathy at 1 year after stroke and (1) apathy in acute phase; (2) demographic, pre-stroke predisposing conditions (previous mild cognitive impairment, alcohol abuse, mood/anxiety disorder) and clinical features (stroke type and location, neurological symptoms); (3) post-stroke depression and post-stroke cognitive impairment, and (4) post-stroke functional outcome, quality of life and the perception of health. Methods: Consecutive stroke (infarct/intracerebral hemorrhage) patients without aphasia or consciousness disturbances were included in the acute phase of stroke and assessed at 1 year after stroke. We assessed apathy with the clinically rated version of the Apathy Evaluation Scale. We also assessed post-stroke depression (Montgomery Asberg Depression Rating Scale) and post-stroke cognitive impairment (attention, mental flexibility, verbal, motor and graphomotor initiative, and non-verbal and verbal abstract reasoning, and Mini-Mental State Examination), functional outcome (Barthel Index), quality of life and perception of health (EuroQol). Data were analyzed using bivariate associations (χ² and t test) and stepwise multivariate analysis. Results: We included 76 stroke patients [32.9% women, mean age 62.9 years (SD = 10.9) and a mean of 6.9 (SD = 4.3) years of education]. Apathy was present in 17 patients in the acute phase and in 18 (23.7%) patients at 1 year after stroke. At 1 year after stroke, 41% of the acute apathetic patients remained apathetic. Sixty-one percent of new cases of post-stroke apathy were detected. Post-stroke apathy was associated only with previous cognitive impairment, apathy in acute stroke, post-stroke cognitive impairment, verbal abstract reasoning and with worse Barthel Index scale scores. In the multivariate logistic regression model, verbal abstract reasoning (odds ratio, OR = 7.03) and apathy in acute stroke (OR = 3.8) were identified as independent factors for post-stroke apathy at 1 year. Apathetic patients did not report worse quality of life or health. Conclusion: Apathy in acute stroke phase was a reliable indicator of post-stroke apathy. Apathy should be assessed in both phases. Verbal abstract reasoning impairment was also an independent factor for post-stroke apathy impairing patients' ability to reason about goal-directed activity. Even though apathetic patients had worse post-stroke functional outcome, they did not report losing quality of life or having worse health.

Health Coaching: Holistically Empowering Change

It's no secret that the rate and magnitude of stress in daily life, both at work and at home, are drastically affecting the health and well-being of people in our communities and around the world. People are desperate to find ways to improve their lives and feel happier, healthier, and more vibrant. Likewise, industry is clamoring to find resources to improve the health and well-being of their staff and their teams.1,2 With the aging population and rapidly growing demands of modern life, this need is expanding exponentially. Billions of dollars are spent annually on complementary and integrative care resources. Many people seek to combine allopathic medical care with proactive self-initiated choices and behaviors to prevent or manage illness and to increase their overall health and well-being.

Thinking and Acting in Anticipation: A Review of Research on Proactive Behavior

Being proactive involves self-initiated, future-focused, and change-orientated behaviors. Such proactivity has been recognized as a positive way of behaving that can lead to the increased performance and effectiveness of individuals and organizations, especially when employees operate in contexts of unpredictable and changing demands. Because of its well-documented benefits, the antecedents and mechanisms of proactive behavior have been widely examined in an effort to identify how to promote such behavior in organizations. In this article, the authors first review various ways of conceptualizing proactivity, which includes an individual differences perspective, a behavior perspective, and a process perspective. A behavior perspective is mainly adopted in this article as this perspective is dominant in literature. Next, three mechanisms representing “can do”, “reason to” and “energized to” processes that can trigger proactive behavior are introduced. A review on antecedents of proactive behavior, including dispositional factors, situational factors and their interactions, is followed. The authors also summarize consequences that proactive behavior can bring, including job attitudes and performance. In addition to providing reviews, as the second part, the authors introduce their recent research that considers expanded dispositional predictors of proactive behavior (i.e., need for cognition, attachment style) as well as how these predictors interact with the situation. To conclude, the authors summarize what is well established in the literature, as well as what warrants further inquiry.

De Job Demands-Resources benadering van job crafting

The Job Demands-Resources approach of job crafting The Job Demands-Resources approach of job crafting The aim of this article is to provide an overview of research on job crafting and of our vision on self-initiated behavior of employees to change aspects of their work environment. In particular, we discuss job crafting theory and indicate how job crafting can be contextualized within the Job Demands-Resources (JD-R) theory. Based on the embedding of job crafting in the JD-R model, a job crafting scale was developed and validated. We discuss the results of the study that examined the psychometric properties of the job crafting scale and summarize four studies that applied the JD-R conceptualization of job crafting. Based on this overview, we provide recommendations for future research on job crafting and for practice.

The way one thinks affects the way one drinks: Subjective evaluations of alcohol consequences predict subsequent change in drinking behavior.

Heavy alcohol use and related consequences are common during the college years and are associated with deleterious outcomes for both the students themselves and the college community. Some college students make self-initiated changes to their drinking to avoid such outcomes, but little is known about how such adjustments occur, or characteristics that are associated with making these adjustments. Based on Social Learning Theory (SLT), one cognitive factor that may predict within-person changes in drinking is the subjective evaluations of alcohol consequences (i.e., the extent to which consequences are perceived as negative, aversive, or severe). The aim of the present study was to investigate whether subjective evaluations of recently experienced consequences influence within-person changes in drinking behavior. In 10 weekly, web-based surveys, regularly drinking college students (N = 96, 50 female) reported on their previous week alcohol use and experience of 24 alcohol-related consequences, as well as their subjective evaluations of those consequences. Results demonstrated that evaluations across the consequences varied, and that in addition to differing from one another, students' evaluations of consequences differed at the within-person level over time. Most important, hierarchical linear model tests revealed that students drank less and experienced fewer consequences following weeks in which they rated their consequences as more negative (relative to their own typical subjective evaluations), suggesting that viewing one's recent consequences as aversive prompts self-initiated behavior change. Findings of the present study have potential to inform interventions for college drinking, particularly those that target how individuals think about their behavior and its consequences.

When and For Whom Can Supervisors Enhance Subordinates' Proactivity?

Supervisors have been found to play an important role in shaping subordinates' proactive behavior, or self-initiated, future-focused and change-oriented behavior that aims to bring about positive c...

Anterior Prefrontal Cortex Contributes to Action Selection through Tracking of Recent Reward Trends

The functions of prefrontal cortex remain enigmatic, especially for its anterior sectors, putatively ranging from planning to self-initiated behavior, social cognition, task switching, and memory. A predominant current theory regarding the most anterior sector, the frontopolar cortex (FPC), is that it is involved in exploring alternative courses of action, but the detailed causal mechanisms remain unknown. Here we investigated this issue using the lesion method, together with a novel model-based analysis. Eight patients with anterior prefrontal brain lesions including the FPC performed a four-armed bandit task known from neuroimaging studies to activate the FPC. Model-based analyses of learning demonstrated a selective deficit in the ability to extrapolate the most recent trend, despite an intact general ability to learn from past rewards. Whereas both brain-damaged and healthy controls used comparisons between the two most recent choice outcomes to infer trends that influenced their decision about the next choice, the group with anterior prefrontal lesions showed a complete absence of this component and instead based their choice entirely on the cumulative reward history. Given that the FPC is thought to be the most evolutionarily recent expansion of primate prefrontal cortex, we suggest that its function may reflect uniquely human adaptations to select and update models of reward contingency in dynamic environments.

Behavioral validation of avolition in schizophrenia

BackgroundSince Kraepelin, avolition, a core symptom of schizophrenia, has been defined as a decrease in spontaneous, self-initiated and purposeful behaviors observed in daily life activities. However, the concurrent validity of commonly-used avolition measures has not been studied, and direct observation may offer a more objective way to measure avolition. MethodA direct observation measure of spontaneous and self-initiated behaviors that can be observed in an inpatient setting was defined with the use of time sampling method. This direct observation measure was used with fifty inpatients with schizophrenia. Additionally, patients were asked to rate their current interest in and their level of engagement in 10 active behaviors during the preceding 7days. Clinicians rated the patients' engagement in the same activities for the preceding 7days as well. ResultsThe direct observation measure showed very good psychometric properties. Three clinical negative symptom scales showed moderate to high correlation with the direct measure. Concerning the retrospective ratings, patients' self-assessments were poorly correlated with clinicians' ratings, but showed high correlation with their subjective interests. ConclusionsClinical rating scales of negative symptoms show moderate to good concurrent validity as measures of avolition in schizophrenia. However, patients' self-reports do not appear to provide valid indices of avolition. Our results favor clinical negative symptoms scales that use observers' reports only, over patients' self-reports. The direct observation of patients' behavior offers a precise and objective measure of avolition that may be useful in drug challenges and clinical trials.

Internally Generated Preactivation of Single Neurons in Human Medial Frontal Cortex Predicts Volition

Understanding how self-initiated behavior is encoded by neuronal circuits in the human brain remains elusive. We recorded the activity of 1019 neurons while twelve subjects performed self-initiated finger movement. We report progressive neuronal recruitment over ∼1500 ms before subjects report making the decision to move. We observed progressive increase or decrease in neuronal firing rate, particularly in the supplementary motor area (SMA), as the reported time of decision was approached. A population of 256 SMA neurons is sufficient to predict in single trials the impending decision to move with accuracy greater than 80% already 700 ms prior to subjects' awareness. Furthermore, we predict, with a precision of a few hundred ms, the actual time point of this voluntary decision to move. We implement a computational model whereby volition emerges once a change in internally generated firing rate of neuronal assemblies crosses a threshold.

Heritability of children's prosocial behavior and differential susceptibility to parenting by variation in the dopamine receptor D4 gene

Theoretical considerations and new empirical evidence suggest that children's development cannot simply be explained by either genes or environment but that their interaction is important to understanding child behavior. In particular, a genetic polymorphism, the exon III repeat region of the dopamine receptor D4, has been the focus of interest regarding differential susceptibility to parental influence. To study environmental and genetic influences on children's prosocial behavior, 168 twin pairs (mean age = 44 months) participated in an experiment that assessed prosocial behavior via three measures: compliant prosocial behavior elicited in response to social requests, self-initiated prosocial behavior enacted voluntarily, and mothers' rating of children's behavior. Genetic effects accounted for 34% to 53% of the variance in prosocial behavior. The rest of the variance was accounted for by nonshared environment and error. Parenting measures of maternal positivity, negativity, and unexplained punishment did not correlate significantly with children's prosocial behavior. However, when parenting was stratified by presence or absence of the child's dopamine receptor D4 7-repeat allele in an overlapping sample of 167 children to model differential susceptibility to parental influence, a richer picture emerged. Positive parenting related meaningfully to mother-rated prosocial behavior, and unexplained punishment related positively to self-initiated prosocial behavior, but only among children carrying the 7-repeat allele. The findings demonstrate that a molecular genetic strategy, based on genotyping of common polymorphisms and combined with a classic twin approach, provides a richer description of how genes and environment interact to shape children's behavior, and allows for the identification of differential sensitivity to parental influence.

Children's low affective perspective-taking ability is associated with low self-initiated pro-sociality.

Children's affective perspective-taking (APT) may provide a basis for efficient social interaction. The APT abilities of 83 children from 46 same-sex sibling pairs (ages 36 to 72 months, M = 52.8; SD = 12.6) were assessed through their reactions to affectively loaded story situations, and children whose APT ability (but not general cognitive abilities) was low relative to other children of their age were designated as Low-APT children. These children were not less pro-social when specific social cues or requests for pro-social behavior were given by experimenters. However, low APT may hinder children's ability to infer the need for pro-social action from relatively subtle social cues. Although 46.9% of nonlow APT children behaved pro-socially in at least two of three opportunities they were given to perform a self-initiated pro-social behavior, none of the children who were low on APT did.

Review of self-initiated behaviors of free-ranging cetaceans directed towards human swimmers and waders during open water encounters

Open water encounters of swimming and wading humans with wild cetaceans have increased worldwide. Behaviors being self-initiated by cetaceans during encounters and addressed towards humans still have received little study and their structure and function mostly remain unclear. This study reviews the scientific literature describing such behaviors. Unhabituated, habituated, lone and sociable and food-provisioned cetaceans from 10 odontocete and one mysticeti species were reported to show altogether 53 different behaviors which were affi liative (33 behaviors), aggressive/threatening (18) and sexual (2) in nature. Behaviors are listed in an ethogram. Due to varying research designs, observational biases cannot be excluded and comparability of results is sometimes hindered. Aggressive/threatening behaviors were reported mainly for food-provisioned and lone and sociable dolphins and these might be responses to inappropriate human behaviors. Sexual behaviors were only described for lone and sociable dolphins. Keywords: human–dolphin interactions; ethogram; swim-with-dolphin programs; whale watching

017 Apathy is associated with altered cortical activation in pre-frontal regions during self-initiated actions

AimsApathy is a neurocognitive syndrome of reduced goal-directed behaviour, which is an important cause of disability in neurodegenerative disorders. We aimed to test the hypothesis that apathy in two disorders...

Integrative Symptom-Focused Dynamic Psychotherapy

The advent of the relational perspective in psychoanalytic theory has opened up exciting new prospects for integrative psychotherapy. My own integrative model draws on self psychology and attachment theory for ideas about development and treatment, but also posits the need for active techniques at times to help with troubling symptoms. In addition to using interventions from behavioral and cognitive behavioral traditions, my treatment approach has been evolving to include a variety of mindfulness based strategies. In this article I focus on interventions I use most often to help patients with two major domains: self regulation (which includes affect management and perspective on the self), and self-initiated behavior change. Case examples illustrating the interplay of symptom-focused work and more dynamic exploration are provided.

Readiness Discharge for Spontaneous Initiation of Walking in Crayfish

Animals initiate behavior not only reflexively but also spontaneously in the absence of external stimuli. In vertebrates, electrophysiological data on the neuronal activity associated with the self-initiated voluntary behavior have accumulated extensively. In invertebrates, however, little is known about the neuronal basis of the spontaneous initiation of behavior. We investigated the spike activity of brain neurons at the time of spontaneous initiation of walking in the crayfish Procambarus clarkii and found neuronal signals indicative of readiness or preparatory activities in the vertebrate brain that precede the onset of voluntary actions. Those readiness discharge neurons became active >1 s before the initiation of walking regardless of stepping direction. They remained inactive at the onset of mechanical stimulus-evoked walking in which other descending units were recruited. These results suggest that the parallel descending mechanisms from the brain separately subserve the spontaneous and stimulus-evoked walking. Electrical stimulation of these different classes of neurons caused different types of walking. In addition, we found other descending units that represented different aspects of walking, including those units that showed a sustained activity increase throughout the walking bout depending on its stepping direction, as well as one veto unit for canceling out the output effect of the readiness discharge and three termination units for stopping the walking behavior. These findings suggest that the descending activities are modularized in parallel for spontaneous initiation, continuation, and termination of walking, constituting a sequentially hierarchical control.