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Psychiatry Res ; 261: 357-360, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29353761


This study examined the change of Theory of Mind (ToM) performances in patients with first-episode schizophrenia over an 18-month period since illness onset. A computerised behavioural task was utilised to assess the affective and cognitive facets of visual-based ToM. Patients' ToM performances were standardised using the norms of gender-stratified, age- and IQ-matched controls. The results showed that schizophrenia patients exhibited poorer second-order affective and cognitive ToM at baseline, but their ToM ability improved after 18 months of follow-up. Our findings do not support a longitudinal dissociation of affective from cognitive ToM in schizophrenia.

Psicologia do Esquizofrênico , Teoria da Mente , Adolescente , Adulto , Afeto , Feminino , Seguimentos , Humanos , Masculino , Testes Neuropsicológicos , Adulto Jovem
Schizophr Bull ; 44(1): 137-146, 2018 01 13.
Artigo em Inglês | MEDLINE | ID: mdl-28531307


The ability to follow spoken instructions is important to everyday functioning but has seldom been studied in patients with schizophrenia (SZ). Recent evidence suggests that action-based processing may facilitate the ability to follow instructions, which relies largely on working memory. In this study, we tested the hypothesis that SZ patients may also benefit from action-based advantages in following instructions. Forty-eight clinically stable SZ patients and 48 demographic- and IQ-matched controls completed a following spoken instruction span task involving varied encoding and recall conditions. While SZ patients were impaired in the overall performance of following spoken instructions, this deficit could be attributed to working memory impairment. More importantly, SZ patients showed action-based advantages both at the encoding and retrieval stage to the same extent as healthy controls. Specifically, both healthy controls and SZ patients showed improved memory performance when they additionally performed the actions, or watched the experimenter carrying out the actions compared with simply listening to spoken instructions during the encoding stage. During the retrieval stage, memory was improved when they recalled the instructions by physical enactment compared with oral repetition. The present study provides the first empirical evidence for the impairment in the ability to follow instructions in SZ. We have shown that involving action-based processing in the encoding and retrieval stage facilitated memory of instructions, indicating that the enactment advantage in working memory also applies to SZ patients. These findings provide useful insights for clinical interventions and cognitive remediation for SZ patients.

Disfunção Cognitiva/fisiopatologia , Memória de Curto Prazo/fisiologia , Rememoração Mental/fisiologia , Desempenho Psicomotor/fisiologia , Esquizofrenia/fisiopatologia , Percepção da Fala/fisiologia , Adulto , Disfunção Cognitiva/etiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Esquizofrenia/complicações
Neuropsychology ; 30(6): 673-84, 2016 09.
Artigo em Inglês | MEDLINE | ID: mdl-26986747


OBJECTIVE: Individuals with schizophrenia have been found to exhibit emotion-behavior decoupling, particularly with respect to anticipated, rather than experienced events. However, previous research has focused on how emotion valence translates into motivated behavior, ignoring the fact that emotion arousal should also modulate emotion-behavior coupling. Few studies have examined emotion-behavior coupling in prepsychotic conditions. This investigation aimed to examine the nature and extent of emotion valence- and arousal-behavior coupling across the schizophrenia spectrum. METHOD: We examine how emotional valence and arousal couple with behavior in 3 groups of individuals (25 individuals with chronic schizophrenia; 27 individuals early in the disease course, and 31 individuals reporting negative schizotypal symptoms). Participants completed a task using slides to elicit emotion and evoke motivated behavior. We compared participants with their respective matched control groups to determine differences in the correspondence between self-reported emotion valence/arousal and motivated behavior. RESULTS: Both groups with schizophrenia reported similar affective experiences as their controls, whereas individuals reporting negative schizotypal symptoms showed "in-the-moment" anhedonia but not emotion-behavior decoupling. In addition, the schizophrenia groups' affective experiences corresponded less well to their behavior relative to controls. CONCLUSIONS: Our findings suggest emotion-behavior decoupling along both valence and arousal dimensions in schizophrenia but not in participants with high levels of schizotypal symptoms. Findings appear to support the idea that emotion-behavior decoupling differs in nature and extent across the schizophrenia spectrum. Interventions to recouple emotion and behavior may be particularly helpful in allowing people with schizophrenia to gain functional independence. (PsycINFO Database Record

Anedonia/fisiologia , Emoções/fisiologia , Motivação/fisiologia , Esquizofrenia/fisiopatologia , Transtorno da Personalidade Esquizotípica/fisiopatologia , Adulto , Antecipação Psicológica/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prazer/fisiologia
Psychiatry Res ; 228(1): 166-9, 2015 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-25920805


Little is known about subjective pleasure experience in recent-onset schizophrenia, and its relationship with neurocognitive functions. Twenty-seven recent-onset schizophrenia people and 26 controls completed the TEPS and neuropsychological tests. The results showed that schizophrenia people self-reported less anticipatory pleasure than controls. Semantic verbal fluency was apparently correlated with anticipatory pleasure.

Anedonia/fisiologia , Prazer/fisiologia , Esquizofrenia/fisiopatologia , Psicologia do Esquizofrênico , Adolescente , Adulto , Feminino , Humanos , Masculino , Adulto Jovem