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See detailDepression is a heterogeneous condition: A cluster-analysis approach
Wagener, Aurélie ULg; Baeyens, Céline; Van der Linden, Martial ULg et al

Poster (2017, March 24)

The heterogeneity of depression (i.e., symptomatology profiles, treatment responsiveness) is more and more evidenced. From a clinical perspective, having a clearer overview of the symptoms’ heterogeneity ... [more ▼]

The heterogeneity of depression (i.e., symptomatology profiles, treatment responsiveness) is more and more evidenced. From a clinical perspective, having a clearer overview of the symptoms’ heterogeneity of depression will help (1) to deeper understand its underlined psychological processes and (2) to tailor clinical treatments (i.e., psychological interventions and/or antidepressant medications). In order to so, an effort to determine subtypes of depression has been developed through a cluster-analysis approach. Andreasen et al. (1980) identified three clusters of depressed patients based on the Schedule for Affective Disorders and Schizophrenia; Schacht et al. (2014) evidenced five clusters based on the Hamilton Depression Rating Scale (i.e., lack of insight, sleep/sexual/somatic, typical MDD, gastrointestinal/weight loss, mild MDD); Hybels et al. (2012) found three clusters of depressive patients based on the Center for Epidemiologic Studies-Depression Scale in community seniors; and Guidi et al. (2011) found two clusters of depressives in medically ill patients based on the Structured Clinical Interview for DSM-IV (i.e., depressed somatizers, irritable/anxious depression). The current study aims at replicating and extending these previous findings in adults presenting depressive symptoms through a cluster-analysis approach. Unlike previous studies, the highlighting of the clusters will be based on the most frequently used assessment of depression, the Beck Depression Inventory-Second Edition (BDI-II). Further, the definition of the clusters will be based on the presence of the depressive symptoms rather than on their severity because symptoms’ severity on the BDI-II can be misrepresentative of the phenomenology of depressive symptoms’ clusters. A sample of 619 adults from community and mental healthcare centers has been recruited. Inclusion criteria were as follows: being a French-speaking adult aged between 18 and 60 years and presenting at least five symptoms on the BDI-II, irrespective of their severity. Data grouping was achieved through a combination of hierarchical (Ward’s method with squared Euclidian distance measurement) and nonhierarchical procedures (K-means cluster analysis), as recommended by recent theoretical trends. A six-cluster solution was evidenced: heavy sleepers (high levels of tiredness, loss of energy and increase of sleep), cognitive depressives (high levels of pessimism, past failures, guilty feelings, self-dislike and worthlessness), affective-somatic depressives (high levels of affective symptoms - loss of interest and pleasure - and somatic symptoms - increase of appetite and sleep, irritability), mild depressives (mild levels of all symptoms), sleepless depressives (high levels of decrease of sleep and tiredness), typical depressives (high levels of all symptoms). Results evidenced the heterogeneity of depressive symptoms, as six different clusters of depressive adults have been found. Two of the clusters identified in the current study are similar to two clusters identified by Schacht et al. (2014) (sleepless depressives are similar to the cluster “sleep/sexual/somatic” because their profile are highly characterized by symptoms related to insomnia and tiredness; mild depressives are similar to the cluster “mild MDD/symptoms” because their profile are characterized by low to average levels on all symptoms). The take-home message of this study is that depression is a heterogeneous condition. Consequently, it is necessary to consider this heterogeneity in order to tailor the psychological intervention. [less ▲]

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See detailReduced specificity and enhanced subjective experience of future thinking in ageing: The influence of avoidance and emotion-regulation strategies
Jumentier, Sabrina; Barsics, Catherine ULg; Van der Linden, Martial ULg

in Memory (2017)

Future thinking in older adults is characterised by a lack of specificity of imagined events and by an equal or even higher subjective experience, compared to younger adults. We considered whether this ... [more ▼]

Future thinking in older adults is characterised by a lack of specificity of imagined events and by an equal or even higher subjective experience, compared to younger adults. We considered whether this lack of specificity stemmed partly from the avoidance of a somewhat disturbing future and then examined the extent to which certain types of emotion-regulation strategies, namely positive reappraisal and positive refocusing, contributed to the subjective experience of future thinking. Middle-aged and older adults completed an adapted version of the AMT, in which temporal distance and cue word valence were manipulated, thus resulting in future conditions assumed to represent varying degrees of discomfort. Results indicate that distant future and negative cues restricted both the specificity and the subjective experience of future thinking. In addition, the use of avoidance strategies predicted the nature of future thoughts in the context of a supposed uncomfortable future (i.e., a distant future induced by negative cues), although it followed quite different age-related patterns. Together with the findings that positive reappraisal and positive refocusing (to a lesser extent) contributed to the subjective experience of future thinking, this study indicates that how individuals imagine their personal future also relies on affect- and emotion-regulation strategies. [less ▲]

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See detailA French version of the Balanced Time Perspective Scale: Factor structure and relation to cognitive reappraisal.
Barsics, Catherine ULg; Rebetez, Marie; Rochat, Lucien et al

in Canadian Journal of Behavioural Science = Revue Canadienne des Sciences du Comportement (2017), 49(1), 51-57

A frequent and equal tendency to think positively about one’s past and future has been conceptualised as a balanced time perspective (TP). Such a dispositional temporal orientation has been associated ... [more ▼]

A frequent and equal tendency to think positively about one’s past and future has been conceptualised as a balanced time perspective (TP). Such a dispositional temporal orientation has been associated with higher life satisfaction and happiness. The aim of the present study was to develop and to validate a French version of the Balanced Time Perspective Scale (BTPS; Webster, 2011), which has been specifically designed to assess the combined use of positive future and past mental representations as resources for the self. Data were collected from an online survey in a sample of 622 French-speaking individuals from the general population. Results indicated that the French version of the BTPS replicated the 2-factor structure of the original questionnaire, and showed excellent internal consistency. External validity was supported by specific rela- tionships with measures of TP and positive affect. In addition, a high propensity to project oneself positively both in the future and the past was associated with greater use of cognitive reappraisal. [less ▲]

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See detailLa Perspective Temporelle Equilibrée: Validation d’un questionnaire et relation avec la régulation émotionnelle.
Barsics, Catherine ULg; Rebetez, Marie My Lien; Rochat, Lucien et al

Poster (2016, November 26)

La Perspective Temporelle Equilibrée fait référence à une disposition individuelle caractérisée par le fait de se projeter mentalement dans le futur et dans le passé de manière positive et fréquente ... [more ▼]

La Perspective Temporelle Equilibrée fait référence à une disposition individuelle caractérisée par le fait de se projeter mentalement dans le futur et dans le passé de manière positive et fréquente. L’objectif de notre étude était de valider la version française d’une échelle, initialement conçue en anglais, évaluant cette orientation temporelle : la “Balanced Time Perspective Scale” (Webster, 2011). Une étude en ligne a permis de recueillir les données de 622 participants francophones issus de la population générale. Les résultats indiquent que la version française réplique la structure en deux facteurs du questionnaire original et plaident en faveur d’une bonne validité de construit. De surcroît, les résultats montrent qu’une tendance importante à se projeter mentalement dans le futur et dans le passé de manière positive et fréquente est associée à la réévaluation cognitive, une stratégie de régulation émotionnelle. En somme, ce questionnaire permet d’évaluer la perspective temporelle, qui est ici envisagée en tant qu’importante ressource pour le self, et ce, en étroite relation avec les capacités de régulation émotionnelle. [less ▲]

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See detailL'activation comportementale est-elle pertinente pour tous les adultes dépressifs ? Une analyse en clusters
Wagener, Aurélie ULg; Baeyens, Céline; Van der Linden, Martial ULg et al

Poster (2016, November 26)

INTRODUCTION : L’hétérogénéité de la dépression est de plus en plus mise en évidence en termes de profils de symptômes, de réponse au traitement, etc. Les théories comportementales de la dépression ... [more ▼]

INTRODUCTION : L’hétérogénéité de la dépression est de plus en plus mise en évidence en termes de profils de symptômes, de réponse au traitement, etc. Les théories comportementales de la dépression soulignent l’importance de l’inactivité ainsi que des faibles niveaux de plaisir et de fréquence d’activités plaisantes dans le maintien de la dépression. Cette étude poursuit deux objectifs : (1) investiguer l’hétérogénéité de la depression via une analyse en clusters, (2) investiguer les valeurs prédictives de l’inactivité ainsi que des faibles niveaux de plaisir et de fréquence d’activités plaisantes sur la dépression en fonction du cluster d’appartenance. METHODE : Des adultes tout venant et/ou consultant des centres de santé mentale ont été recrutés (âge entre 18 et 60 ans). Ils ont complété l’Inventaire de Dépression de Beck – Seconde Edition, l’Echelle d’Activation Comportementale pour la Dépression – Version courte, et l’Inventaire des événements plaisants. RESULTATS : Une solution en six clusters a été mise en évidence : “gros dormeurs/heavy sleepers”, “dépressifs cognitifs/cognitive depressives”, “dépressifs affectifs-somatiques/affective-somatic depressives”, “dépressifs légers/mild depressives”, “dépressifs dormant peu/sleepless depressives”, “dépressifs typiques/typical depressives”. Des relations significatives entre inactivité, fréquence d’activités plaisantes et dépression ont seulement été observées chez les “dépressifs cognitifs/cognitive depressives”, les “dépressifs légers/mild depressives” et les “dépressifs typiques/typical depressives”. DISCUSSION : Les résultats confirment l’hétérogénéité de la dépression puisque six clusters ont été mis en évidence. Par ailleurs, l’activation comportementale ne semble pertinente que pour trois de ces clusters dans lesquels les postulats du modèle comportemental de la dépression sont confirmés (“dépressifs cognitifs/cognitive depressives”, “dépressifs légers/mild depressives”, “dépressifs typiques/typical depressives”). [less ▲]

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See detailEmotional future-oriented thoughts: Characteristics and perceived functions
Barsics, Catherine ULg; Rebetez, Marie; D'Argembeau, Arnaud ULg et al

Conference (2016, July 19)

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See detailVers une approche multidimensionnelle de la procrastination.
Rebetez, Marie; Rochat, Lucien; Barsics, Catherine ULg et al

Poster (2016, June 10)

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See detailProcrastination as a self-regulation failure: The role of inhibition, negative affect, and gender.
Rebetez, Marie; Rochat, Lucien; Barsics, Catherine ULg et al

in Personality and Individual Differences (2016), 101

Procrastination is a widespread phenomenon described as the quintessence of self-regulatory failure. The aim of the present study was to explore the role of inhibition capacities (prepotent response ... [more ▼]

Procrastination is a widespread phenomenon described as the quintessence of self-regulatory failure. The aim of the present study was to explore the role of inhibition capacities (prepotent response inhibition and resistance to proactive interference), negative affect, and gender in this self-regulatory failure. One hundred thirteen partici- pants completed two tasks assessing prepotent response inhibition and resistance to proactive interference, as well as questionnaires measuring procrastination and trait negative affect. Three profiles of inhibitors were iden- tified through cluster analysis: the first had good capacities in both prepotent response inhibition and resistance to proactive interference, the second had good capacities in resisting proactive interference but lower capacities in inhibiting prepotent response, and the third had good capacities in inhibiting prepotent response but lower capacities in resisting proactive interference. Procrastination was higher in this last cluster, but only under par- ticular conditions (relatively higher level of negative affect) and in some participants (women). These results shed new light on the role of inhibition-related functions, negative affect, and gender in procrastination. [less ▲]

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See detailWorking Memory Assessment: Construct Validity of the Brown-Peterson Test
Geurten, Marie ULg; Vincent, Eric ULg; Van der Linden, Martial ULg et al

in Canadian Journal of Behavioural Science = Revue Canadienne des Sciences du Comportement (2016), 48(4), 328-336

The classical Brown-Peterson task is generally supposed to assess working memory capacities. To date, however, the construct validity of the task remains mostly unexamined. In this context, the aim of the ... [more ▼]

The classical Brown-Peterson task is generally supposed to assess working memory capacities. To date, however, the construct validity of the task remains mostly unexamined. In this context, the aim of the present study was to demonstrate the convergent and the divergent validity as well as the clinical and the developmental sensitivity of a computerized version of the Brown-Peterson test. A group of 726 French-speaking participants aged from 18 to 86 years and 47 patients who had sustained a traumatic brain injury (TBI) were administered the Brown-Peterson task and various other cognitive tasks assessing executive functioning, verbal and visual memory, or processing speed. The correlation analyses revealed the good convergent of the task, which was shown to be able to distinguish between participants with TBI and control participants. We found an effect of age and education level on the different scores recorded for the Brown-Peterson test. Normative data taking into account the influence of the latter variables were thus provided. On the whole, these findings seem to confirm the validity of the Brown-Peterson task as a tool to assess working memory abilities. [less ▲]

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See detailMaladaptive emotion regulation strategies and stress sensitivity mediate the relation between adverse life events and attenuated positive psychotic symptoms
Laloyaux, Julien ULg; Dessart, Gregory; Van der Linden, Martial ULg et al

in Cognitive Neuropsychiatry (2016), 21(2), 116-129

Introduction. There is now solid evidence for a relation between adverse life events (ALE) and psychotic symptoms in patients with psychosis and in the general population. A recent study has shown that ... [more ▼]

Introduction. There is now solid evidence for a relation between adverse life events (ALE) and psychotic symptoms in patients with psychosis and in the general population. A recent study has shown that this relation may be partially mediated by stress sensitivity, suggesting the influence of other factors. The aim of this study was to assess the mediation effect of emotion regulation strategies and stress sensitivity in the relation between ALE and attenuated positive psychotic symptoms (APPS) in the general population. Methods. Hundred and twelve healthy volunteers were evaluated with measures of APPS, emotion regulation strategies, ALE and stress sensitivity. Results. Results demonstrated that the relation between ALE, hallucination and delusion proneness was completely mediated by maladaptive emotion regulation strategies, but not by stress sensitivity. However, in addition to maladaptive emotion regulation strategies, stress sensitivity demonstrated a mediation effect between ALE and attenuated positive psychotic positive symptoms when positive psychotic symptoms were grouped together. Conclusions. There are probably several possible trajectories leading to the formation of positive psychotic symptoms and the results of the present study reveal that one such trajectory may involve the maladaptive regulation of negative emotions alongside a certain general vulnerability after experiencing ALE. [less ▲]

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See detailProjecting the self into the future in individuals with schizophrenia: a preliminary cross-sectional study.
Raffard, Stephane; Bortolon, Catherine; D'Argembeau, Arnaud ULg et al

in Memory (2016), 24(6), 826-837

The ability to project oneself into the future contributes to development and maintenance of a coherent sense of identity. If recent research has revealed that schizophrenia is associated with ... [more ▼]

The ability to project oneself into the future contributes to development and maintenance of a coherent sense of identity. If recent research has revealed that schizophrenia is associated with difficulties envisioning the future, little is known about patients' future self-representations. In this study, 27 participants with schizophrenia and 26 healthy controls were asked to simulate mental representations of plausible and highly significant future events (self-defining future projections, SDFPs) that they anticipate to happen in their personal future. Main results showed that schizophrenia patients had difficulties in reflecting on the broader meaning and implications of imagined future events. In addition, and contrary to our hypothesis, a large majority of SDFPs in schizophrenia patients were positive events, including achievements, relationship, and leisure contents. Interestingly, patients and controls did not differ on the perceived probability that these events will occur in the future. Our results suggest that schizophrenia patients have an exaggerated positive perception of their future selves. Together, these findings lend support to the idea that past and future self-defining representations have both similar and distinct characteristics in schizophrenia. [less ▲]

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See detailProcrastination, consideration of future consequences, and episodic future thinking
Rebetez, Marie My Lien; Barsics, Catherine ULg; Rochat, Lucien et al

in Consciousness & Cognition (2016), 42

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See detailExploring the Parsing of Dynamic Action in Checking Proneness
Belayachi, Sanaa ULg; Van der Linden, Martial ULg

in Behaviour Change (2015), 32(2), 93-103

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See detailInternal encoding style and schizotypy: towards a conceptually-driven account of positive symptoms
Belayachi, Sanaa ULg; Laloyaux, Julien ULg; Laroi, Frank ULg et al

in Journal of Personality Disorders (2015), 29(3), 303-315

Perception results from a combination of actual data and interpretative schemata based on pre-existing knowledge. Thus, ensuing subjective experience depends on the dynamic interplay between data-driven ... [more ▼]

Perception results from a combination of actual data and interpretative schemata based on pre-existing knowledge. Thus, ensuing subjective experience depends on the dynamic interplay between data-driven and conceptually-driven processing. A chronic imbalance between these two sources of stimulus encoding is likely to be maladaptive and could underlie cognitive and behavioral disturbances similar to that observed in schizotypy, especially if the balance is tipped too far towards conceptually-driven processing (i.e., Internal encoding style). This study aimed to examine the relationships between encoding style and various dimensions of schizotypy, by using a questionnaire that evaluates the extent to which pre-existing schemata (versus cues from the outside world) affect encoding processes. Consistent with previous findings, our results revealed that both Cognitive-Perceptual and Disorganization dimensions were related to an internal mode of encoding, suggesting that individuals with these features may be characterized by a disposition to biases at early stages of encoding. [less ▲]

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See detailHeterogeneity of multitasking abilities in schizophrenia.
Laloyaux, Julien ULg; Van der Linden, Martial ULg; Laroi, Frank ULg

Conference (2015, May 28)

Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia, and in particular for those activities requiring multitasking capacities. Multitasking refers to ... [more ▼]

Difficulties in everyday life activities are core features of persons diagnosed with schizophrenia, and in particular for those activities requiring multitasking capacities. Multitasking refers to activities (e.g. preparing a meal) where the person has to: (a) carry out and alternate between different tasks that vary in terms of priority, difficulty and duration; (b) define the tasks’ targets; (c) and face unexpected problems during the realization of these tasks. Moreover, schizophrenia is characterized by a great heterogeneity in regard to their everyday life difficulties and cognitive functioning. At present, patients’ multitasking capacities have not been adequately examined in the literature due to an absence of suitable assessment strategies. We thus recently developed a computerized real-life activity task designed to take into account the complex and multitasking nature of certain everyday life activities where participants are required to prepare a room for a meeting (i.e. the Computerized Meeting Preparation Task, CMPT). The aim of this study was to examine the multitasking abilities in persons diagnosed with schizophrenia and in particular the existence of subgroups of patients in regard to their performances on cognitive measures and on the CMPT. Sixty-two patients diagnosed with schizophrenia and 39 paired healthy controls completed the CMPT and a cognitive battery. The results reveal that the CMPT possesses good sensitivity and suggest three underlying constructs of multitasking (Memory, Planning and Intent), which were found to be underpinned by several cognitive functions and multitasking aspects. Moreover, cluster analyses revealed subgroups of patients differing in terms of their cognitive and CMPT performances. Taken together, these results show the need for a cognitive model of multitasking abilities in persons diagnosed with schiozphrenia. Taken together, this cognitive model and the CMPT, could be a good basis for cognitive interventions of multitasking abilities in schizophrenia. Finally, the results underline the heterogeneity of schizophrenia. [less ▲]

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