Browsing by Author "Campos, Carlos"
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- Exploring the associations between early maladaptive schemas and impulsive and compulsive buying tendenciesPublication . Rocha, Susana; Fernández, Xosé Manuel; Castro, Yolanda Rodríguez; Ferreira, Simão; da Conceição Teixeira, Liliana; Campos, Carlos; Rocha, Nuno BarbosaThe main purpose of this preliminary study was to investigate a potential relationship between early maladaptive schemas (EMSs) and impulsive and compulsive buying tendencies in a sample of young adults (college students). This research adds to the cognitive perspective of consumer behavior that the cognitive schemas putatively associated with early experiences may have a strong impact on impulsive and compulsive buying. Data was obtained from 365 participants in a cross-sectional study design. Participants completed an online survey with the following instruments: Young Schema Questionnaire; Impulsive Buying Tendency Measurement Scale; Richmond Compulsive Buying Scale; and Hospital Anxiety and Depression Scale. Using multiple linear hierarchical regressions, we confirmed that the domain of over vigilance and inhibition schemas was positively associated with impulsive and compulsive buying tendencies, while an opposite association was found for the domain of impaired limits. Being a female was also a predictor of impulsive buying and compulsive buying. The results were discussed in terms of the coping mechanisms to deal with negative emotions, as a way to obtain rewards, or as a way to escape painful self-awareness. Other mechanisms related to the internalization of perfectionist expectations and the propensity to shame were also explored. Copyright © 2023 Rocha, Fernández, Castro, Ferreira, Teixeira, Campos and Rocha.
- Fotopolimerização de hidrogéis de ácido hialurónicoPublication . Duarte, Stacy; Pereira, Rúben; Campos, Carlos; Vaz, Daniela C.; Paulo Flores et al.O ácido hialurónico (HA) é um polissacarídeo amplamente presente no organismo humano e constitui um material com potencial para ser incorporado em hidrogéis direcionados para aplicações biomédicas. No entanto, as fracas propriedades mecânicas, rápida degradação e libertação in vivo do HA não reticulado solúvel limita muitas aplicações clínicas diretas. Deste modo, com vista melhorar as suas caraterísticas materiais procedemos à modificação química do HA com anidrido metacrílico (MA), com formação de ácido hialurónico metacrilado (MeHA), com propriedades fotopolimerizáveis, combinado ainda na presença e ausência de agente gelificante extra, tal como o polissacarídeo natural iota-carragenina. O HA utilizado foi caracterizado através de espectroscopia de ressonância magnética nuclear (RMN) e de dicroísmo circular (CD). Os hidrogéis produzidos foram analisados via testes de absorção de água e de degradação em meio aquoso, bem como através de análise mecânica dinâmica (DMA) à compressão. O estudo conduzido permitiu verificar que, enquanto os biofilmes de HA se mostraram quebradiços e com fracas propriedades mecânicas, o MeHA não só foi capaz de formar hidrogéis, por fotopolimerização, como a adição do iota-carragenina à formulação, possibilitou a formação de IPNs (Interpenetrating Polymer Networks) e de semi-IPNs com melhores propriedades físicas e mecânicas.
- Repeated Clinical Assessment Using Sensory Modality Assessment and Rehabilitation Technique for Diagnosis in Prolonged Disorders of ConsciousnessPublication . da Conceição Teixeira, Liliana; Blacker, Danielle; Campos, Carlos; Garrett, Carolina; Duport, Sophie; Rocha, NunoThe recommended way to assess consciousness in prolonged disorders of consciousness is to observe the patient’s responses to sensory stimulation. Multiple assessment sessions have to be completed in order to reach a correct diagnosis. There is, however, a lack of data on how many sessions are sufficient for validity and reliability. The aim of this study was to identify the number of Sensory Modality Assessment and Rehabilitation Technique (SMART) assessment sessions needed to reach a reliable diagnosis. A secondary objective was to identify which sensory stimulation modalities are more useful to reach a diagnosis.