Gianni Brighetti

Prevalence of pathological gambling in patients with Parkinson's disease.

Pathological gambling (PG) is a psychiatric disorder characterized by loss of control of gambling, which has repercussions on family, personal, and professional life. Several recent studies have reported the relationship between PG and the treatment of Parkinsons disease (PD), but no prevalence study has yet been conducted to investigate this correlation. The purpose of this study was to evaluate the prevalence of PG in Italian patients with PD on dopamine replacement therapy. The prevalence of PG in a PD sample (n = 98) and in an age‐ and sex‐matched control group (n = 392) was obtained. The prevalence of PG results significantly higher (P = 0.00001) in PD patients than in control subjects (6.1% vs. 0.25%). Our results emphasize that PG in patients with idiopathic PD on dopamine replacement therapy is an emergent comorbidity, but probably at present the condition is not properly diagnosed because it is mostly unknown.

''Far from the heart far from the eye'': Evidence from the Capgras delusion

Introduction. Capgras syndrome is characterised by the belief that a significant other has been replaced by an identical-looking impostor. These patients have no difficulties with visual recognition but fail to show a skin conductance response (SCR) to the objects of the delusion. A case of Capgras delusion (YY), specifically characterised by the absence of brain lesions, constituted a good opportunity to test the relationship between SCR hyporesponsiveness and eye movement patterns to familiar and unfamiliar faces. Methods. Visual scan path and SCR were recorded for YY and 8 controls during the presentation of family members’ photographs matched with unfamiliar faces of the same sex, age, and physical likeness. Eye movement patterns were explored by selecting three specific areas of interest (AOI) involving the eyes, the mouth, and the face regions. Results. In contrast with controls, YY showed a reduction in number and sum of fixation durations to the eyes (p<.01) and no differential SCRs (p>.05) to familiar vs. nonfamiliar faces. SCR and fixation duration to family members’ eyes were significantly correlated (r=.77) in both YY and controls. Conclusions. Eye region exploration seems to be related to the autonomic reactivity elicited by the affective valence of familiar faces.

Postural control after a night without sleep.

The present study analysed the efficiency of postural control after 12 h of nocturnal forced wakefulness using Rombergs test comprising 1 min of recording with eyes-open and 1 min of recording with eyes-closed, with a 1 min break between the two sessions. Our aim was to see if the decreased postural control efficiency after a sleepless night was unspecific (in both eyes-closed and eyes-open conditions) or selective (in only one of the conditions). A total of 55 students spent a whole night awake at our laboratory and were tested at 22:00 and 08:00 h. In general, the results showed that postural sway increased, performing the recording from eyes-open to eyes-closed condition. The statokinesigram length (SL or efficiency of the postural system) increased after the sleepless night, while in eyes-open condition, the length in function of surface (LFS or accuracy of postural control) and Rombergs index (or contribution of vision to maintain posture) significantly decreased. This could indicate that after a night without sleep, there is a slower elaboration of visual inputs in the postural control process. On the basis of these results, the effects of sleep deprivation on cognitive performance were considered from a neuropsychological point of view.

Amygdala responses to masked and low spatial frequency fearful faces: a preliminary fMRI study in panic disorder

Previous studies have demonstrated amygdala activation in response to fearful faces even if presented below the threshold of conscious visual perception. It has also been proposed that subcortical regions are selectively sensitive to low spatial frequency (LSF) information. However, chronic hyperarousal may reduce amygdala activation in panic disorder (PD). Our aim was to establish whether the amygdala is engaged by masked and LSF fearful faces in PD as compared to healthy subjects. Neutral faces were used as the mask stimulus. Thirteen PD patients (seven females, six males; mean age=29.1 (S.D: 5.9)) and 15 healthy volunteers (seven females, eight males; mean age=27.9 (S.D. 4.5)) underwent two passive viewing tasks during a 3T functional magnetic resonance imaging (fMRI) as follows: 1) presentation of faces with fearful versus neutral expressions (17ms) using a backward masking procedure and 2) presentation of the same faces whose spatial frequency contents had been manipulated by low-pass filtering. Level of awareness was confirmed by a forced choice fear-detection task. Whereas controls showed bilateral activation to fearful masked faces versus neutral faces, patients failed to show activation within the amygdala. LSF stimuli did not elicit amygdala response in either group, contrary to the view that LSF information plays a crucial role in the processing of facial expressions in the amygdala. Findings suggest maladaptive amygdala responses to potentially threatening visual stimuli in PD patients.

Worry as an adaptive avoidance strategy in healthy controls but not in pathological worriers

The cognitive avoidance model of worry assumes that worry has the adaptive function to keep under control the physiological arousal associated with anxiety. This study aimed to test this model by the use of a fear induction paradigm in both pathological and healthy individuals. Thirty-one pathological worriers and 36 healthy controls accepted to be exposed to a fear induction paradigm (white noise) during three experimental conditions: worry, distraction, and reappraisal. Skin conductance (SCR) and heart rate variability (HRV) were measured as indices of sympathetic and parasympathetic nervous system functioning. Worriers showed increased sympathetic and decreased parasympathetic activation during the worry condition compared to non-worriers. There were no differences between groups for the distraction and reappraisal conditions. SCRs to the white noises during worry were higher in worriers versus controls throughout the entire worry period. Intolerance of uncertainty - but not metacognitive beliefs about worry - was a significant moderator of the relationship between worry and LF/HF-HRV in pathological worriers. Results support the cognitive avoidance model in healthy controls, suggesting that worry is no longer a functional attitude when it becomes the default/automatic and pathological response.

Risk tolerance in financial decision making

Introduction C.Lucarelli The Role of Risk in the Investment Decision Process: Traditional vs Behavioural Finance C.Mazzoli & N.Marinelli Household Behaviour and Debt Demand D.Vandone The Traditional Approach to Risk Tolerance C.Mazzoli & N.Marinelli Risk of Over-indebtedness and Behavioural Factors L.Anderloni & D.Vandone Decision Making: Psychological Perspective C.Ottaviani, V.Nucifora, R.Borlimi & G.Brighetti The Layout of the Empirical Analysis C.Lucarelli, C.Ottaviani & D.Vandone The Indicators of Risk C.Lucarelli & G.Palomba Results on the Investment Side C.Lucarelli The Determinants of Household Debt Holding: An Empirical Analysis D.Vandone & C.Ottaviani The Implications for Market Participants and Regulators G.Brighetti, C.Lucarelli & D.Vandone

Gender differences in attitudes towards risk and ambiguity: when psycho–physiological measurements contradict sex–based stereotypes

This paper investigates gender differences in behaviour under uncertainty, as this personal condition influences entrepreneurship. We explore risk taking attitude and ambiguity aversion used in economic decisions on a sample of 645 individuals. We collect objective measurements of risk/ambiguity aversion from a psycho-physiological task, and we gather self-assessments of individual risk tolerance from a verbatim questionnaire. Our findings show no statistical gender difference when risk/ambiguity attitudes originate from the psycho-physiological task. Conversely, self-evaluated risk tolerance indicates that women define themselves as risk averse, whereas men define themselves as risk lovers. These differences are statistically significant and persist in a multivariate framework, excluding an indirect effect due to education, self-esteem, wealth, impulsivity, and other controls. This supports the concept that self-assessed risk attitude originates from an overall (wrong) social construct. Women evaluate themselves coherently with this sex-based stereotype and end up reinforcing the social idea of their inferior attitude to assume risks.

Errors in Individual Risk Tolerance

This paper focuses on risk tolerance which clearly influences financial decision making. We explore the emotional side of a risk taking behaviour, comparing alternative measures of financial risk tolerance resulting from the consilience of various disciplines. We wonder whether we financially act as we are or as we are supposed to be. Thus we measure first, an unbiased risk tolerance (UR), which is obtained from the psycho physiological reactions of individuals taking risk in laboratory experimental settings; second, a biased risk tolerance (BR) obtained through a psychometrically validated questionnaire. Finally we compare these indicators with risks assumed in the real-life. Our findings confirm that people tend to behave coherently to their self-representation and almost in stark contrast to what they feel. Nevertheless, experiments conducted on more than 440 individuals, with a large presence of trader and asset managers allow us to prove evidence of an ‘unconscious sleeping factor’ which is remarkable when the unbiased risk is much higher than the risk assumed in real life but, at the same time, higher than the self-evaluation. Our findings induce us to propose a model of mental functioning that places rationality and emotion side by side to a third factor: the counterfactual thinking and the wandering mind. The sleeping factor is totally absent in traders and asset managers.

Associations between caregiving worries and psychophysical well-being. An investigation on home-cared cancer patients family caregivers

PurposeCaregiving to a family member with cancer might have health implications. However, limited research has investigated the psychophysical health of home-cared cancer patients family caregivers. In a previous study, we have found that a prolonged worry in daily life is a crucial variable compared to caregivers’ psychophysical symptomatology. This investigation was designed to further examine the well-being of family caregivers, explore the domains of worry, and assess to what extent “content-dependent” worry could be associated with the caregivers’ healthMethodsThe sample consisted of 100 family caregivers of oncological patients assisted at home. Participants completed a battery of self-report questionnaires (Penn State Worry Questionnaire, Worry Domain Questionnaire, Hospital Anxiety and Depression Scale, Family Strain Questionnaire Short Form, and Psychophysiological Questionnaire of the Battery CBA 2.0).ResultsThe level of worry was medium-high among participants, and caregivers worry more about their occupation and future. Depression, anxiety, and somatic symptomatology levels resulted mild, while strain level resulted high. Statistical analyses confirm the conclusions of the previous study, revealing a significant positive correlation between worry levels and caregivers’ psychophysical health. Innovatively, it has been highlighted that who has higher scores of content-dependent worry shows also higher levels of strain, somatic symptoms, anxiety, and depressionConclusionsNot only trait-worry (“content-free” measure) but also content-dependent worry is associated with strain and negative health outcomes. People may worry about different targets, and it might be useful to further investigate what are the specific worriers of family caregivers in order to promote their physical and emotional well-being.

Do emotions affect insurance demand

Purpose - – The purpose of this paper is to explore how psychological variables are related to real-life insurance consumption. Specifically, the authors focus on whether emotions and psychological traits can improve the predictability of insurance demand, taking traditional socioeconomic variables under control. Design/methodology/approach - – The approach used was in-person survey, based on a traditional questionnaire, the Barratt Impulsiveness Scale and a psycho-physiological task (Iowa Gambling Task (IGT)). Findings - – A selective role of emotions and psychological traits has been proven to exist when comparing different insurance policies. Life and casualty insurance are affected by emotional arousal to losses; indemnity insurance by fear of the unknown, whereas health insurance by impulsivity. Research limitations/implications - – The findings indicate that individual insurance consumption may be amplified by not cognitive components. Future research should concentrate on testing the effect of further psychological traits related to pure risk coverage. Practical implications - – The results may be of interest for insurers in order to know what drives insurance demand with respect to different kinds of pure risks. Social implications - – For policymakers, it is important to understand how psychological factors affect consumer behavior in order to incorporate such perspective into modern insurance policy measures. An analysis of such factors may also increase the self-consciousness of insurance consumers and enrich consumer self-protection. Originality/value - – The authors propose an interdisciplinary approach to analyze insurance demand and test different kinds of insurance coverage, suggesting not homogenous hedging behaviors in relation to specific ambiguous events.