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1.
Brain Sci ; 13(6)2023 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-37371406

RESUMO

The human attention system, similar to other networks in the brain, is of a complex nature. At any moment, our attention can shift between external and internal stimuli. In this study, we aimed to assess three EEG-based measures of attention (Power Spectral Density, Connectivity, and Spectral Entropy) in decision-making situations involving goal-directed and stimulus-driven attention using a Virtual Reality supermarket. We collected the EEG data of 29 participants in 2 shopping phases, planned and unplanned purchases. The three mentioned features were extracted and a statistical analysis was conducted. We evaluated the discriminatory power of these features using an SVM classifier. The results showed a significant (p-value < 0.001) increase in theta power over frontal, central, and temporal lobes for the planned purchase phase. There was also a significant decrease in alpha power over frontal and parietal lobes in the unplanned purchase phase. A significant increase in the frontoparietal connectivity during the planned purchase was observed. Additionally, an increase in spectral entropy was observed in the frontoparietal region for the unplanned purchase phase. The classification results showed that spectral entropy has the highest discriminatory power. This study can provide further insights into the attentional behaviors of consumers and how their type of attentional control can affect their decision-making processes.

2.
Front Neurosci ; 17: 1062980, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36875641

RESUMO

Introduction: Consumer decision-making processes involve a complex interrelation between perception, emotion, and cognition. Despite a vast and diverse literature, little effort has been invested in investigating the neural mechanism behind such processes. Methods: In the present work, our interest was to investigate whether asymmetrical activation of the frontal lobe of the brain could help to characterize consumer's choices. To obtain stronger experimental control, we devised an experiment in a virtual reality retail store, while simultaneously recording participant brain responses using electroencephalogram (EEG). During the virtual store test, participants completed two tasks; first, to choose items from a predefined shopping list, a phase we termed as "planned purchase". Second, subjects were instructed that they could also choose products that were not on the list, which we labeled as "unplanned purchase." We assumed that the planned purchases were associated with a stronger cognitive engagement, and the second task was more reliant on immediate emotional responses. Results: By analyzing the EEG data based on frontal asymmetry measures, we find that frontal asymmetry in the gamma band reflected the distinction between planned and unplanned decisions, where unplanned purchases were accompanied by stronger asymmetry deflections (relative frontal left activity was higher). In addition, frontal asymmetry in the alpha, beta, and gamma ranges illustrate clear differences between choices and no-choices periods during the shopping tasks. Discussion: These results are discussed in light of the distinction between planned and unplanned purchase in consumer situations, how this is reflected in the relative cognitive and emotional brain responses, and more generally how this can influence research in the emerging area of virtual and augmented shopping.

3.
Australas Psychiatry ; 30(3): 352-356, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-34854342

RESUMO

OBJECTIVES: Research has shown that mindfulness in athletes is associated with positive outcomes. We therefore assessed the effect of mindfulness training on increasing mental toughness (MT) and psychological well-being (PWB). METHODS: This was a parallel-group, pre-and post-test, randomised controlled pilot trial. Forty-five female athletes from Iranian universities in Tehran were randomly assigned into experimental (n = 23) and control groups (n = 22). Forty-two completed the trial. The mindfulness training group received the Mindfulness-Acceptance-Commitment programme for 7 weeks. All subjects completed the Mindfulness Inventory for Sport (MIS), Sports Mental Toughness Questionnaire and PWB Scale. Data were analysed using mixed analysis of variance. RESULTS: Mindfulness training increased mindfulness in the experimental group (p < 0.01). In turn, increased mindfulness led to increased MT and PWB at 2-month follow-up (p < 0.05). CONCLUSIONS: Given that mindfulness training may increase the MT and PWB of athletes, these techniques should be considered for inclusion in sports coaching.


Assuntos
Atenção Plena , Esportes , Atletas/psicologia , Feminino , Humanos , Irã (Geográfico) , Atenção Plena/métodos , Projetos Piloto , Inquéritos e Questionários
4.
Sci Rep ; 11(1): 20752, 2021 10 21.
Artigo em Inglês | MEDLINE | ID: mdl-34675342

RESUMO

Mate preference in short-term relationships and long-term ones may depend on many physical, psychological, and socio-cultural factors. In this study, 178 students (81 females) in sports and 153 engineering students (64 females) answered the systemizing quotient (SQ) and empathizing quotient (EQ) questionnaires and had their digit ratio measured. They rated their preferred mate on 12 black-line drawing body figures varying in body mass index (BMI) and waist to hip ratio (WHR) for short-term and long-term relationships. Men relative to women preferred lower WHR and BMI for mate selection for both short-term and long-term relationships. BMI and WHR preference in men is independent of each other, but has a negative correlation in women. For men, digit ratio was inversely associated with BMI (p = 0.039, B = - 0.154) preference in a short-term relationship, and EQ was inversely associated with WHR preference in a long-term relationship (p = 0.045, B = - 0.164). Furthermore, men and women in sports, compared to engineering students, preferred higher (p = 0.009, B = 0.201) and lower BMI (p = 0.034, B = - 0.182) for short-term relationships, respectively. Women were more consistent in their preferences for short-term and long-term relationships relative to men. Both biological factors and social/experiential factors contribute to mate preferences in men while in women, mostly social/experiential factors contribute to them.


Assuntos
Parceiros Sexuais , Adulto , Índice de Massa Corporal , Razão Digital , Feminino , Humanos , Irã (Geográfico) , Masculino , Casamento , Relação Cintura-Quadril , Adulto Jovem
5.
Artigo em Inglês | MEDLINE | ID: mdl-35010391

RESUMO

BACKGROUND: Mindfulness-based interventions are well-established in the field of psychotherapy, and such interventions have also gained increased attention in the field of sport psychology, either to cope with psychological pressure or to improve an athlete's performance. The goal of the present study was to examine whether a Mindfulness-Acceptance-Commitment (MAC) program could increase self-compassion and grit among elite female athletes compared to an active control condition. To this end, we performed a randomized trial among female adult athletes. METHODS: Forty female adult athletes (Mage = 22.22, SD = 2.40) were randomly assigned either to the Mindfulness-Acceptance-Commitment group (n = 20; 7 group sessions, 60 min each) or the active control group (n = 20; 7 group sessions, 60 min each). At baseline, seven weeks later at the end of the study and again four weeks later at follow-up, participants completed a series of self-rating questionnaires on mindfulness, self-compassion and grit. RESULTS: Dimensions of mindfulness, self-compassion and grit improved over time, but more so in the Mindfulness-Acceptance-Commitment condition compared to the active control condition. Improvements remained stable from the study end to follow-up. CONCLUSIONS: While the active control condition improved dimensions of mindfulness, self-compassion and grit among female adult athletes, improvements were much stronger in the Mindfulness-Acceptance-Commitment condition. Importantly, improvements in the Mindfulness-Acceptance-Commitment condition remained stable over a time lapse of four weeks at follow-up after study completion, suggesting that the Mindfulness-Acceptance-Commitment intervention appeared to improve cognitive-emotional learning processes.


Assuntos
Atenção Plena , Adulto , Atletas , Atenção , Empatia , Feminino , Humanos , Autocompaixão , Inquéritos e Questionários , Adulto Jovem
6.
Iran J Psychiatry ; 13(4): 254-263, 2018 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-30627199

RESUMO

Objective: We aimed to examine the validity and reliability of the empathy quotient (EQ) and systemizing quotient (SQ) in a Farsi-speaking population. Method : This study explores the factor structure and psychometric properties of the Farsi translations of the 22-item version of EQ and the 25-item version of SQ among 542 young university students. Results: Applying a cross-validation approach, a 14-item two-factor model and a 15-item four-factor model for the Farsi translations of the short versions of EQ and SQ, respectively, were extracted from the exploratory dataset using exploratory factor analysis (EFA). Confirmatory factor analysis (CFA) on the validation dataset confirmed the factor structures identified by EFA. In addition, acceptable internal consistency and test-retest reliability were demonstrated for the Farsi translations of the 14-item two-factor EQ model and the 15-item four-factor SQ model. Conclusion: The results suggested further evidence in favor of the multi-factorial constructs of the EQ and SQ and validity and reliability of the scales.

7.
J Complement Integr Med ; 14(1)2017 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-28199216

RESUMO

Background Although a certain level of competitive anxiety may increase performance, many athletes with anxiety experience uncontrolled negative feelings and cognition that in turn can have overwhelming effects on their performance. Methods We aimed to assess the effect of acupuncture on competitive anxiety of the adolescent football players prior to the competition using psychological and physiological markers. A total of 30 athletes were randomly and equally allocated to either acupuncture or sham control group. Results The results of t-test on posttest scores showed that acupuncture had a significant effect on cognitive anxiety (p=0.001) and somatic anxiety (p<0.001) but not self-confidence (p>0.05). Furthermore, the results showed that acupuncture significantly decreased the skin conductance in acupuncture group compared to sham group (p=0.006) (p<0.001). Conclusions In conclusion, the results suggested that acupuncture has the capacity to decrease cognitive and somatic anxiety prior to competition in adolescent athletes while this was accompanied by significant physiological changes.


Assuntos
Terapia por Acupuntura , Ansiedade/prevenção & controle , Atletas/psicologia , Desempenho Atlético/psicologia , Adolescente , Cognição , Comportamento Competitivo , Humanos , Masculino , Projetos Piloto , Autoeficácia
8.
Arch Iran Med ; 19(10): 704-711, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27743435

RESUMO

BACKGROUND: Given the importance of regular physical activity, it is crucial to evaluate the factors favoring participation in physical activity. We aimed to report the psychometric analysis of the Farsi version of the Physical Activity and Leisure Motivation Scale (PALMS). METHODS: The Farsi version of PALMS was completed by 406 healthy adult individuals to test its factor structure and concurrent validity and reliability. RESULTS: Conducting the exploratory factor analysis revealed nine factors that accounted for 64.6% of the variances. The PALMS reliability was supported with a high internal consistency of 0.91 and a high test-retest reliability of 0.97 (95% CI: 0.97-0.98). The association between the PALMS and its previous version Recreational Exercise Motivation Measure scores was strongly significant (r= 0.86, P < 0.001). CONCLUSION: We have shown that the Farsi version of the PALMS appears to be a valuable instrument to measure motivation for physical activity and leisure.


Assuntos
Exercício Físico , Idioma , Atividades de Lazer , Motivação , Psicometria/normas , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Análise Fatorial , Feminino , Voluntários Saudáveis , Humanos , Irã (Geográfico) , Masculino , Pessoa de Meia-Idade , Reprodutibilidade dos Testes , Inquéritos e Questionários , Tradução , Adulto Jovem
9.
Scientifica (Cairo) ; 2016: 4016952, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27127679

RESUMO

In a randomized controlled trial we examined the effect of acupuncture on anxiety of the adolescent football players prior to the competition using psychological and physiological markers. A total of 45 athletes were equally allocated to either acupuncture group, sham group, or wait-list control group. Thereafter, all participants were asked to complete an anxiety questionnaire before and after the intervention. Their heart rate and skin conductance were also examined before and after the intervention. The results of ANOVA on posttest scores showed that acupuncture had a significant effect on cognitive anxiety (p = 0.001) and somatic anxiety (p < 0.001) but not on self-confidence (p > 0.05). Furthermore, the results showed that acupuncture significantly decreased the skin conductance in acupuncture group compared to sham group (p = 0.006) and wait-list control group (p < 0.001). In conclusion, the results suggested that acupuncture has the capacity to decrease cognitive anxiety and somatic anxiety prior to competition in adolescent athletes, while this was accompanied by significant physiological changes. This trial is registered with IRCT138904074264N1 (IRCT is a Primary Registry in the WHO Registry Network).

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