A comparison of the impact of avoidance cues in hazard avoidance during evaluation of text entry

The research presented in this paper is part of an ongoing investigation into how best to support meaningful lab-based evaluations of mobile technologies. In our previous work, we developed a hazard avoidance system for use during lab evaluations [1]; in the work reported here, we further assess the impact of this system, specifically in terms of the effect of avoidance cue type on speech-based text entry tasks.

Food avoidance in children:the influence of maternal feeding practices and behaviours

The aim of this study was to examine the contribution of a broad range of maternal feeding practices in predicting parental reports of food avoidance eating behaviours in young children, after controlling for child temperament, and maternal dietary restraint which have previously been associated with feeding problems. One hundred and four mothers of children aged between 3 and 6 years completed self report measures of their child's eating behaviour and temperament, maternal dietary restraint and child feeding practices. Maternal reports of food avoidance eating behaviours were associated with an emotional child temperament, high levels of maternal feeding control, using food for behaviour regulation and low encouragement of a balanced and varied food intake. Maternal feeding practices, predominantly pressure to eat, significantly predicted food avoidance eating behaviours after controlling for child emotionality and maternal dietary restraint. The significant contribution of maternal feeding practices, which are potentially modifiable behaviours, suggests that the feeding interactions of parents and their children should be targeted for intervention and the prevention of feeding difficulties during early childhood. Future research should continue to explore how a broader range of feeding practices, particular those that may be more adaptive, might influence child eating behaviour. © 2011 Elsevier Ltd.

A comparison of the impact of avoidance cues in hazard avoidance during evaluation of text entry

The research presented in this paper is part of an ongoing investigation into how best to support meaningful lab-based evaluations of mobile technologies. In our previous work, we developed a hazard avoidance system for use during lab evaluations [1]; in the work reported here, we further assess the impact of this system, specifically in terms of the effect of avoidance cue type on speech-based text entry tasks.

The relationship of fear of intimacy, body image avoidance and body mass index

Issues of body image and ability to achieve intimacy are connected to body weight, yet remain largely unexplored and have not been evaluated by gender. The underlying purpose of this research was to determine if avoidant attitudes and perceptions of one's body may hold implications toward its use in intimate interactions, and if an above average body weight would tend to increase this avoidance. The National Health and Nutrition Examination Survey (NHANES, 1999-2002) finds that 64.5% of US adults are overweight, with 61.9% of women and 67.2% of men. The increasing prevalence of overweight and obesity in men and women shows no reverse trend, nor have prevention and treatment proven effective in the long term. The researcher gathered self-reported age, gender, height and weight data from 55 male and 58 female subjects (determined by a prospective power analysis with a desired medium effect size (r=.30) to determine body mass index (BMI), determining a mean age of 21.6 years and mean BMI of 25.6. Survey instruments consisted of two scales that are germane to the variables being examined. They were (1) Descutner and Thelen of the University of Missouri‘s (1991) Fear-of-Intimacy scale; and (2) Rosen, Srebnik, Saltzberg, and Wendt's (1991) Body Image Avoidance Questionnaire. Results indicated that as body mass index increases, fear of intimacy increases (p<0.05) and that as body mass index increases, body image avoidance increases (p<0.05). The relationship that as body image avoidance increases, fear of intimacy increases was not supported, but approached significance at (p<0.07). No differences in these relationships were determined between gender groups. For age, the only observed relationship was that of a difference between scores for age groups [18 to 22 (group 1) and ages 23 to 34 (group 2)] for the relationship of body image avoidance and fear of intimacy (p<0.02). The results suggest that the relationship of body image avoidance and fear of intimacy, as well as age, bear consideration toward the escalating prevalence of overweight and obesity. An integrative approach to body weight that addresses issues of body image and intimacy may prove effective in prevention and treatment.

The Relationship of Fear of Intimacy, Body Image Avoidance and Body Mass Index

Issues of body image and ability to achieve intimacy are connected to body weight, yet remain largely unexplored and have not been evaluated by gender. The underlying purpose of this research was to determine if avoidant attitudes and perceptions of one’s body may hold implications toward its use in intimate interactions, and if an above average body weight would tend to increase this avoidance. The National Health and Nutrition Examination Survey (NHANES, 1999-2002) finds that 64.5% of US adults are overweight, with 61.9% of women and 67.2% of men. The increasing prevalence of overweight and obesity in men and women shows no reverse trend, nor have prevention and treatment proven effective in the long term. The researcher gathered self-reported age, gender, height and weight data from 55 male and 58 female subjects (determined by a prospective power analysis with a desired medium effect size (r =.30) to determine body mass index (BMI), determining a mean age of 21.6 years and mean BMI of 25.6. Survey instruments consisted of two scales that are germane to the variables being examined. They were (1) Descutner and Thelen of the University of Missouri’s (1991) Fear-of-Intimacy scale and (2) Rosen, Srebnik, Saltzberg, and Wendt’s (1991) Body Image Avoidance Questionnaire. Results indicated that as body mass index increases, fear of intimacy increases (p<0.05) and that as body mass index increases, body image avoidance increases (p<0.05). The relationship that as body image avoidance increases, fear of intimacy increases was not supported, but approached significance at (p<0.07). No differences in these relationships were determined between gender groups. For age, the only observed relationship was that of a difference between scores for age groups [18 to 22 (group 1) and ages 23 to 34 (group 2)] for the relationship of body image avoidance and fear of intimacy (p<0.02). The results suggest that the relationship of body image avoidance and fear of intimacy, as well as age, bear consideration toward the escalating prevalence of overweight and obesity. An integrative approach to body weight that addresses issues of body image and intimacy may prove effective in prevention and treatment.

Multiple robots formation manoeuvring and collision avoidance strategy

This paper presents a multiple robots formation manoeuvring and its collision avoidance strategy. The direction priority sequential selection algorithm is employed to achieve the raw path, and a new algorithm is then proposed to calculate the turning compliant waypoints supporting the multi-robot formation manoeuvre. The collision avoidance strategy based on the formation control is presented to translate the collision avoidance problem into the stability problem of the formation. The extension-decomposition-aggregation scheme is next applied to solve the formation control problem and subsequently achieve the collision avoidance during the formation manoeuvre. Simulation study finally shows that the collision avoidance problem can be conveniently solved if the stability of the constructed formation including unidentified objects can be satisfied.

No discrimination shock avoidance with sequential presentation of stimuli but shore crabs still reduce shock exposure

Insights into the potential for pain may be obtained from examination of behavioural responses to noxious stimuli. In particular, prolonged responses coupled with long-term motivational change and avoidance learning cannot be explained by nociceptive reflex but are consistent with the idea of pain. Here, we placed shore crabs alternately in two halves of a test area divided by an opaque partition. Each area had a dark shelter and in one repeated small electric shocks were delivered in an experimental but not in a control group. Crabs showed no specific avoidance of the shock shelter either during these trials or in a subsequent test in which both were offered simultaneously; however they often emerged from the shock shelter during a trial and thus avoided further shock. More crabs emerged in later trials and took less time to emerge than in early trials. Thus, despite the lack of discrimination learning between the two shelters they used other tactics to markedly reduce the amount of shock received. We note that a previous experiment using simultaneous presentation of two shelters demonstrated rapid discrimination and avoidance learning but the paradigm of sequential presentation appears to prevent this. Nevertheless, the data show clearly that the shock is aversive and tactics, other than discrimination learning, are used to avoid it. Thus, the behaviour is only partially consistent with the idea of pain.

Sviluppo e sperimentazione di un sistema "obstacle detection & collision avoidance" per velivoli multirotori

Il lavoro di tesi svolto riguarda lo sviluppo e la sperimentazione di un primo prototipo di sistema per l’obstacle detection e collision avoidance, capace di identificare un ostacolo e inibire i comandi del pilota in modo da evitare collisioni.

Inflexibilidade Psicológica

O presente trabalho, destinou-se à validação do Avoidance and Fusion Questionnaire for Youth - AFQ- Y( Greco, Baer, & Lambert, 2008), traduzido por Questionário de Evitamento Experiencial e Fusão Cognitiva para Adolescentes. Isto porque, na prática clínica, se verifica uma escassez de instrumentos de auto-resposta que avaliam estes contructos, caracterizadores da inflexibilidade psicológica. A amostra do nosso estudo consiste em 461 adolescentes, com idades compreendidas entre os 12 e os 18 anos, a frequentar o 3º ciclo do ensino básio e ensino secundário de escolas situadas em meio rural e urbano. Para além do citado instrumento a validar, os jovens preencheram também outras medidas de sintomas psicopatológicos e de percepção do seu auto-conceito social; nomeadamente, o Inventário Depressivo para Crianças (CDI; Kovacs, 1985), a Escala Revista de Ansiedade Manifesta para Crianças (RCMAS; Reynolds & Richmond, 1978) e a Escala de Comparação Social (SCS; Allan, & Gilbert, 1995), bem como uma medida de um construto semelhante referente à aceitação e mindfulness em crianças(CAMM; Greco, Baer & Lambert, 2008). Os resultados obtidos mostram que o questionário possui uma boa consistência interna, uma adequada estabilidade temporal, assim como uma boa validade. Sugerem ainda tratar-se de uma escala unidimensional. Estes dados permitem o avanço da psicologia, no que diz respeito à prática clínica com adolescentes, nomeadamente no domínio das chamadas terapias de terceira geração em Portugal. São apresentados e discutidos os dados normativos para a população portuguesa. Não obstante às limitações apontadas, os resultados sugerem que o AFQ-Y é um questionário útil na avaliação da inflexibilidade psicológica em adolescentes. /

Homo e Heterossexuais: o papel das memórias de vergonha, das memórias precoces de calor e segurança, e qualidade de vinculação ao pai, à mãe e ao par amoroso

As experiências precoces de vergonha, na infância e adolescência, cujas memórias assumem características traumáticas, e de centralidade para a identidade, estão associadas a maior propensão para a vergonha e psicopatologia na adultez. O presente estudo visou clarificar o impacto das características traumáticas e da centralidade, das memórias de vergonha, e das memórias precoces de calor e segurança, na qualidade de vinculação aos pais e ao par amoroso, apreciando a orientação sexual. Nesse sentido, 123 sujeitos, homossexuais masculinos (N = 53) e heterossexuais masculinos e femininos (N = 70), completaram a bateria de questionários de autorresposta, para avaliar as caraterísticas traumáticas e a centralidade das memórias de vergonha, as memórias precoces de calor e segurança, a qualidade de vinculação ao pai, à mãe e ao par amoroso, recolhidos a partir de amostra de conveniência não aleatória da população geral. Os resultados mostram que os homossexuais, comparativamente com os heterossexuais, apresentam níveis mais elevados de caraterísticas traumáticas e de centralidade para a identidade, das memórias de vergonha, a par de níveis inferiores de memórias precoces positivas. As caraterísticas traumáticas e de centralidade, das memórias de vergonha, surgem associadas, com intensidade tendencialmente superior nos homossexuais, à restrição da aquisição de autonomia, conferida pelo pai, à sua desvalorização e à ansiedade de separação materna. O vínculo inseguro, aos progenitores, perpetua-se à adultez e ao par amoroso. Relativamente aos heterossexuais, apurámos que o laço emocional e a ansiedade de separação e dependência, paterna e materna, surgem associados a maior confiança e menor evitamento, respetivamente, ao par amoroso. Paralelamente, a ansiedade de separação e dependência materna surge, ainda, associada a maior dependência daquela figura. Este estudo conclui que as experiências precoces de vergonha, na infância e adolescência, podem funcionar como memórias com caraterísticas traumáticas e autobiográficas, constituir marcos de referência centrais no que concerne à identidade e história de vida, sobretudo em homossexuais, com atribuição de significado a outras experiências de vida, nomeadamente no que respeita à vinculação ao par romântico. / Early experiences of shame, in childhood and adolescence, whose memories assume traumatic characteristics, and centrality to identity, are associated with greater propensity to shame and psychopathology in adulthood. The present study aimed to clarify the impact of traumatic features and centrality to identity of shame memories, and of early memories of warmth and safety, on quality of attachment to parents and the loving couple`s bond, considering sexual orientation. Accordingly, 123 subjects, male homosexuals (N = 53) and male and female (N = 70) heterosexuals, completed the battery of self-report questionnaires, to assess trauma characteristics and centrality of shame memories, early memories of warmth and safeness, quality of attachment to the father, mother and loving couple, collected from a non-random convenience sample from general population. The results point that homosexual men, compared with heterosexuals, show higher levels of traumatic characteristics and centrality to identity of shame memories, along with lower levels of early positive memories. Traumatic characteristics and centrality of shame memories arise associated, tendentiously with higher intensity in homosexuals, to restriction of autonomy`s acquisition, conferred by the father, his devaluation and maternal separation anxiety. The unsecured bond, to parents, perpetuates into adulthood and loving couple. Regarding heterosexuals, we found that emotional bond and separation anxiety and dependency, paternal and maternal, arise associated with greater confidence, and less avoidance, respectively, to the loving couple. Further, separation anxiety and mother`s dependency also appears associated with greater dependency to that figure. This study concludes that early experiences of shame, in childhood and adolescence, might function as memories with traumatic and autobiographical characteristics, produce landmarks of central reference regarding identity and life`s history, particularly in homosexual, with attribution of meaning to other life experiences, particularly in the linking to the romantic couple.

Vinculação, Estilos Educativos Parentais e Esquemas Precoces Mal Adaptativos em Reclusos

Introdução: Sobretudo estudos internacionais focam a importância da vinculação e dos estilos educativos parentais no desenvolvimento de comportamentos delinquentes e antissociais. Em Portugal, alguns estudos focados na população reclusa, analisam, separadamente, estilos educativos parentais, personalidade e esquemas precoces mal adaptativos mas, segundo sabemos, nenhum explora, simultaneamente, a vinculação, os estilos educativos parentais e os esquemas precoces mal adaptativos nesta população. São nossos objetivos caracterizar uma amostra de reclusos quanto à vinculação em diferentes relacionamentos, estilos educativos parentais e esquemas precoces mal adaptativos (EPM) e, sobretudo, explorar associações entre estas três variáveis (e destas com variáveis sociodemográficas, familiares, clínicas e relativas à pena). Metodologia: 44 reclusos do sexo masculino (M = 37,3 anos; DP = 10,98; variação = 23-67) preencheram voluntariamente um questionário sociodemográfico e os seguintes instrumentos: EMBU – Memórias de Infância, Experiências em Relações Próximas - Questionário de Estruturas Relacionais e Questionário de Esquemas de Young (QEY). Resultados: Verificou-se, quanto às associações entre vinculação e estilos educativos parentais que: menor suporte emocional paterno associou-se a maior evitamento pai, evitamento mãe e evitamento companheira; menor suporte emocional materno associou-se a maior evitamento mãe, evitamento pai, ansiedade mãe e ansiedade pai; maior rejeição paterna associou-se a maior evitamento mãe, evitamento pai, ansiedade mãe e ansiedade pai; maior rejeição materna associou-se a maior evitamento pai e evitamento mãe. No que toca às associações entre as dimensões de vinculação e EPM, é de enfatizar a associação positivas entre os EPM do domínio distanciamento e rejeição com o evitamento mãe, ansiedade mãe e ansiedade pai, particularmente, os EPM de abandono, desconfiança/abuso e isolamento social, por consistentemente se associaram às dimensões de vinculação. No domínio autonomia e desempenho deteriorados, o fracasso e a dependência/incompetência associaram-se positivamente ao evitamento mãe, a dependência/incompetência à ansiedade pai e o fracasso ao evitamento companheira. Quanto ao domínio limites deteriorados, a grandiosidade associou-se positivamente à ansiedade pai. No domínio vigilância e inibição o pessimismo/negativismo correlacionou-se positivamente com a ansiedade mãe e pai e a autopunição com a ansiedade mãe. Quanto às associações entre dimensões de estilos educativos parentais e os EPM, o domínio distanciamento e rejeição apresentou, de novo resultados relevantes: menores níveis de suporte emocional materno associaram-se a maiores níveis de privação emocional; maiores níveis de rejeição e sobreproteção materna e paterna a maiores os níveis de abandono; maiores níveis de rejeição materna e paterna a maiores níveis de desconfiança/abuso; maiores níveis de rejeição materna e sobreproteção materna e paterna a maiores níveis de isolamento social; maiores níveis de rejeição e sobreproteção paterna a maiores níveis de defeito. Enfatiza-se, também, a associação entre níveis maiores de rejeição paterna e os EPM de grandiosidade, padrões excessivos e pessimismo. Maiores níveis de rejeição materna associaram-se a maiores níveis de pessimismo e autopunição. Discussão: Embora numa amostra pequena, este estudo explorou, pela primeira vez, numa amostra de reclusos portugueses, em simultâneo, associações entre a vinculação, os estilos educativos parentais e os esquemas precoces mal adaptativos. O domínio esquemático distanciamento e rejeição parece ser o mais influenciado pela vinculação estabelecida em diferentes relacionamentos e pelos estilos educativos parentais. / Introduction: Mainly international studies focus on the importance of attachment and parental rearing styles in the development of delinquent and antisocial behaviors. In Portugal some studies focused in the inmate population analyze, separately, parental rearing styles, personality and early maladaptive schemas but, to our knowledge, none simultaneously explores attachment, parental rearing styles and early maladaptive schemas in this population. It is our objective to characterize a sample of inmates concerning attachment in different relationships, parental rearing styles and early maladaptive schemas (EMS) and, above all, explore associations between this three variables (and also with sociodemographic, family, clinic and sentence related variables). Methodology: 44 male inmates (M = 37,3 years; SD = 10,98; variation = 23-67) voluntarily filled in a sociodemographic questionnaire and the following instruments: EMBU – Childhood Memories, Experiments in Close Relationships – Structural Relationship Form and the Young Schema Questionnaires (YSQ) Results: we verified, regarding associations between attachment and parental rearing styles that: less paternal emotional support associated with higher father avoidance (in attachment), mother avoidance and partner avoidance; less maternal emotional support associated with higher mother avoidance, father avoidance, mother anxiety and father anxiety; higher paternal rejection associated with higher mother avoidance, father avoidance, mother anxiety and father anxiety; higher mother rejection associated with father avoidance and mother avoidance. Regarding associations between attachment dimensions and EMS, we emphasize positive associations between EMS in the disconnection and rejection domain with mother avoidance, mother anxiety and father anxiety, particularly, the abandonment, distrust/abuse and social isolation EMS, as they were consistently associated with the this attachment dimension. In the impaired autonomy and performance domain, the failure and dependency/incompetence EMS are positively associated with mother avoidance, the dependence/incompetence EMS to father anxiety and failure to partner avoidance. About the impaired limits domain, grandiosity EMS positively associated with father anxiety. In the overvigilance and inhibition domain, pessimist/negativism EMS positively correlated with mother and father anxiety and self-punishment EMS with mother anxiety. About the associations between parental rearing styles and the EMS, the disconnection and rejection domain presented again relevant results: lower levels of maternal emotional support associated with higher levels of emotional deprivation; higher levels of maternal and paternal rejection and overprotection associated with higher levels of abandonment; higher levels of maternal and paternal rejection associated with higher levels of distrust/abuse; higher levels of maternal rejection and maternal and paternal overprotection associated with higher levels of social isolation; higher levels of paternal rejection and overprotection associated with higher levels of defectiveness. We also emphasize the association between higher levels of paternal rejection and the grandiosity, excessive patterns and pessimism EMS. Higher levels of maternal rejection associated with higher levels of pessimism and self-punishment EMS. Discussion: Although in a small sample, this study explored, for the first time, in sample of Portuguese inmates, simultaneously, the associations between attachment, parental rearing styles and early maladaptive schemas. The schematic domain of disconnection and rejection seems to be the most influenced by the established attachment in different relationships and by parental rearing styles.

Pre-treatment of Stegomyia aegypti mosquitoes with a sublethal dose of imidacloprid impairs behavioural avoidance induced by lemon oil and DEET

International audience

Adesão a recomendações de ingestão de água, em idosos: preditores psicossociais e efeitos da comunicação de informação com uso de âncoras de referência

Sendo os idosos um grupo de risco face a desidratação, torna-se particularmente relevante desenvolver estratégias eficazes de comunicação em saúde para o incremento da adesão a recomendações médicas para ingestão de água. Com este objetivo procurámos avaliar os efeitos da comunicação de uma recomendação, com recurso a uma referência familiar (e.g. garrafa de 1.5 Litros) na qual os idosos pudessem “ancorar” o seu julgamento e decisão de adesão à recomendação, com base numa mais eficaz compreensão de informação de quantidade. Dos 70 idosos que participaram no estudo, apenas 56 foram considerados na análise, por cumprirem os critérios de inclusão na amostra. Esta amostra incluiu idosos autónomos, não institucionalizados, responsáveis pelas suas escolhas alimentares e com indicadores de hidratação aceitáveis. Os resultados mostraram que numa condição com âncora familiar (mas não na condição sem), a adesão associada ao próprio nível de consumo existente, do idoso aumentou após a recomendação. Análises adicionais identificaram as crenças face à água e as suas várias funções, como um preditor psicossocial positivo da adesão, o mesmo não acontecendo com atitudes face à água, evitamento de informação alimentar negativa e numeracia; Abstract: Being the elderly a risk group with regard to dehydration it is necessary to develop effective health communication strategies to increase adherence to health recommendations concerning water intake. Accordingly, we aimed to assess the effects of communicating a recommendation with the addition of a familiar reference (e.g. bottle of 1.5 Liters) in which the elderly could anchor their judgment and decision making to adhere to the recommendation, based on a better comprehension of the quantified information presented. From the 70 older adults that have participated in the study, only 56 were considered in the analysis, for fulfilling the sample inclusion criteria. This sample included older adults considered to be autonomous, non-institutionalized, responsible for their good choices and with acceptable hydration levels. Results showed that in a condition with a familiar anchor (but not in a condition without) the adherence in line with the elderly own current consumption level, increased after the recommendation. Additional analysis identified beliefs concerning water and its various functions as a positive psychosocial predictor of adherence, the same not happening for attitudes towards water, avoidance of negative food information and numeracy.