Although Autism Spectrum Disorders (ASD) are often characterized by deficits in social domains, increasing evidence suggests that individuals with ASD have perceptual biases associated with a shift from reliance on global to local visual cues. This dissertation provides evidence for a two-factor structure to the systemizing trait of autism, as measured by the Systemizing Quotient-Revised (SQ-R), which differentially predicts this perceptual shift in the general population. Specifically, an Analytical Tendencies factor within the SQ-R was found to predict attenuated susceptibility to the global contextual cues that drive the rod-and-frame illusion (RFI), while an Insistence on Sameness factor was associated with heightened sensitivity to the local cues that drive the RFI. Furthermore, in a clinical sample of individuals with ASD, both Analytical Tendencies and Insistence on Sameness factors were found to be hyper-expressed, suggesting that perceptual biases in ASD populations can be explained, in part, by heightened systemizing tendencies. In addition, the Analytical Tendencies factor was also found to predict enhanced performance on the Embedded Figures Task, a visual search task commonly used to assess perceptual abilities in ASD. Furthermore, enhanced performance on this task was associated with reduced susceptibility to the global contextual effects of the RFI, suggesting that superior search performance in individuals with ASD may be due, in part, to attenuated interference from the contextual gestalt of the search array. Importantly, the relationship between heightened systemizing tendencies and attenuated use of global contextual cues was found to reflect a disinclination among high systemizers to use such cues and not a general impairment in processing such cues. Specifically, when contextual cues that benefit performance are available, high systemizers can use these cues to the same extent as low systemizers. Together, these findings implicate a two-factor structure to the SQ-R that is differentially predictive of distinct types of visual processing associated with ASD.

Cybersecurity is an issue of great concern today; data breaches are becoming more frequent and are causing huge economic losses in almost all the industry sectors. The majority of them are caused by malicious or criminal attacks perpetrated by individuals also known as “hackers”. Although the mainstream portrait of hackers nowadays brings to mind the idea of cybercriminals, not all hackers are malicious ones. The word hacker in its original sense only describes a computer enthusiast and a skilled programmer who was eager to learn how computers work. The key to distinguish a good or a bad hacker lies only in the specific intent and the permission to hack. Recently many companies are indeed hiring hackers to test their systems and protect them from the malicious attacks. The strength of good hackers is that they possess the same skills as malicious ones but they use them to enhance security. At the present stage, the process of hiring candidates for internet security positions for the majority of organizations, and business corporations relies mainly on interviews, while few of them advertise some sort of hacking challenges to be solved by potential applicants in order to evaluate upfront their skills and abilities. Moreover, an in-depth review of the literature has revealed that, so far, no systematic investigation has been carried out on the cognitive skills that characterise ethical hackers, experts who are professionally trained to protect systems’ security. The present PhD thesis offers a contribution that starts filling this gap in the literature with an exploratory investigation on the cognitive skills related with hacking expertise on a behavioural level. Findings show that hackers possess stronger systemizing traits as compared to the general population, and suggest a role of the ability to systemize on hacking performance. Moreover, performance on hacking-related tasks is shown to be related with mental rotation abilities and a field independent cognitive style. These findings have both theoretical and practical applications that are extensively discussed; together with possible future directions.

Autismo é um transtorno do neurodesenvolvimento caracterizado por uma díade de sintomas que inclui anormalidades na comunicação, interação social e padrões restritos de comportamentos e interesses, numa idade precoce. Na ausência de um marcador biológico para o transtorno do espectro autista, são exploradas definições cognitivo-comportamentais que expliquem esse quadro. Um modelo cognitivo recente sugere a teoria da empatia-sistematização que explica as dificuldades sociais e de comunicação no autismo em virtude de um atraso e deficit na empatia e explica as aptidões em virtude de uma habilidade intacta ou superior em sistematização. O teste de física intuitiva é um instrumento utilizado para avaliar sistematização. O objetivo deste trabalho é analisar evidências de validade do teste em crianças brasileiras e verificar o desempenho de autistas de alto funcionamento neste teste e na bateria de provas de raciocínio. A análise da consistência interna do teste de física intuitiva revelou um coeficiente considerado insatisfatório. Entre os 330 participantes de escolas, observou-se diferença das pontuações estatisticamente significativa entre gêneros, com desempenho superior em meninos, assim como um incremento na pontuação conforme idade, série escolar e tipo de escola. Os participantes da escola particular apresentaram melhor desempenho. Já entre o grupo clínico (composto por 28 participantes com diagnóstico de autismo de alto funcionamento) e o grupo controle (composto por 28 estudantes de escola particular), observou-se melhor desempenho deste último no teste de física intuitiva, assim como na prova de raciocínio mecânico da Bateria de Provas de Raciocínio. As propriedades psicométricas do teste indicam baixo índice de precisão. O desempenho entre os participantes de escolas modificou-se de acordo com o desenvolvimento, resultado que pode refletir não apenas o desenvolvimento cognitivo da criança, mas também sua experiência diária e aprendizado escolar. Por outro lado, os pacientes com autismo de alto funcionamento não obtiveram melhor desempenho no teste, em relação ao grupo controle / Autism is a neurodevelopmental disorder characterized by symptoms that includes deficits in social interaction, communication and narrow interests and repetitive stereotyped behavior, in an early age. In the absence of a biological marker of the autism spectrum disorders cognitive-behavioral definitions are necessary for these conditions. A recent cognitive model suggests the empathizing-systemizing theory that explains the social and communication difficulties in autism spectrum disorders by reference to delays and deficits in empathy, whilst explaining the areas of strength by reference to intact or even superior skill in systemizing. The intuitive physics test is an instrument developed to assess systemizing. The aim of this study is to analyze the evidences of validity of this test in Brazilian children and to measure the performance of high functioning autists in this test and the Battery of Reasoning Tests. The analysis of the internal consistency of the intuitive physics test disclosed an unsatisfactory coefficient. Among the 330 schoolchildren there was observed statistically significant difference between the scores of the two genders, with superior performance in boys, as well as an increment in scores in accordance with age, grade in school and type of school. The best performance occurred in the children of private school. Between the clinical group (composed of 28 high functioning autism individuals) and the control group (composed of 28 from private schoolchildren), the latter showed the best performance in the intuitive physics test as well as in the mechanical reasoning test. The psychometric properties of the test showed a low consistency index. The performance among school participants changed according to the development, which may reflect not only cognitive development but also their everyday experience and school education. Otherwise, the high functioning autists didn´t have better performance in the intuitive physics test when compared with the control group

Autismo é um transtorno do neurodesenvolvimento caracterizado por uma díade de sintomas que inclui anormalidades na comunicação, interação social e padrões restritos de comportamentos e interesses, numa idade precoce. Na ausência de um marcador biológico para o transtorno do espectro autista, são exploradas definições cognitivo-comportamentais que expliquem esse quadro. Um modelo cognitivo recente sugere a teoria da empatia-sistematização que explica as dificuldades sociais e de comunicação no autismo em virtude de um atraso e deficit na empatia e explica as aptidões em virtude de uma habilidade intacta ou superior em sistematização. O teste de física intuitiva é um instrumento utilizado para avaliar sistematização. O objetivo deste trabalho é analisar evidências de validade do teste em crianças brasileiras e verificar o desempenho de autistas de alto funcionamento neste teste e na bateria de provas de raciocínio. A análise da consistência interna do teste de física intuitiva revelou um coeficiente considerado insatisfatório. Entre os 330 participantes de escolas, observou-se diferença das pontuações estatisticamente significativa entre gêneros, com desempenho superior em meninos, assim como um incremento na pontuação conforme idade, série escolar e tipo de escola. Os participantes da escola particular apresentaram melhor desempenho. Já entre o grupo clínico (composto por 28 participantes com diagnóstico de autismo de alto funcionamento) e o grupo controle (composto por 28 estudantes de escola particular), observou-se melhor desempenho deste último no teste de física intuitiva, assim como na prova de raciocínio mecânico da Bateria de Provas de Raciocínio. As propriedades psicométricas do teste indicam baixo índice de precisão. O desempenho entre os participantes de escolas modificou-se de acordo com o desenvolvimento, resultado que pode refletir não apenas o desenvolvimento cognitivo da criança, mas também sua experiência diária e aprendizado escolar. Por outro lado, os pacientes com autismo de alto funcionamento não obtiveram melhor desempenho no teste, em relação ao grupo controle / Autism is a neurodevelopmental disorder characterized by symptoms that includes deficits in social interaction, communication and narrow interests and repetitive stereotyped behavior, in an early age. In the absence of a biological marker of the autism spectrum disorders cognitive-behavioral definitions are necessary for these conditions. A recent cognitive model suggests the empathizing-systemizing theory that explains the social and communication difficulties in autism spectrum disorders by reference to delays and deficits in empathy, whilst explaining the areas of strength by reference to intact or even superior skill in systemizing. The intuitive physics test is an instrument developed to assess systemizing. The aim of this study is to analyze the evidences of validity of this test in Brazilian children and to measure the performance of high functioning autists in this test and the Battery of Reasoning Tests. The analysis of the internal consistency of the intuitive physics test disclosed an unsatisfactory coefficient. Among the 330 schoolchildren there was observed statistically significant difference between the scores of the two genders, with superior performance in boys, as well as an increment in scores in accordance with age, grade in school and type of school. The best performance occurred in the children of private school. Between the clinical group (composed of 28 high functioning autism individuals) and the control group (composed of 28 from private schoolchildren), the latter showed the best performance in the intuitive physics test as well as in the mechanical reasoning test. The psychometric properties of the test showed a low consistency index. The performance among school participants changed according to the development, which may reflect not only cognitive development but also their everyday experience and school education. Otherwise, the high functioning autists didn´t have better performance in the intuitive physics test when compared with the control group

<p>Savant syndrome is a rare condition in which some people have extraordinary talents despite some serious mental or physical disability. It is a syndrome with remarkable features, standing in stark contrast to a person’s overall character. The term savant, or idiot savant, describes a person who, in spite of low intelligence, has a skill in some specific narrow area. Savants can have a specific talent in, for instance, music, art, calendar calculation or foreign language but whatever the specific talent is, it is always connected to extraordinary memory. Savant syndrome seems to be also connected to autism or autistic characteristics. In this paper I aim to give a clear description of the savant syndrome and explain its connection to autism. Further, I present how specific theories try to describe the causes of savant syndrome, and connect the theories to results of empirical research in order to give an overall view of the syndrome’s appearance. I will also compare the theories and evaluate their strengths and weaknesses with respect to the discoveries and progress that has been made within the area of savant syndrome research.</p>

Savant syndrome is a rare condition in which some people have extraordinary talents despite some serious mental or physical disability. It is a syndrome with remarkable features, standing in stark contrast to a person’s overall character. The term savant, or idiot savant, describes a person who, in spite of low intelligence, has a skill in some specific narrow area. Savants can have a specific talent in, for instance, music, art, calendar calculation or foreign language but whatever the specific talent is, it is always connected to extraordinary memory. Savant syndrome seems to be also connected to autism or autistic characteristics. In this paper I aim to give a clear description of the savant syndrome and explain its connection to autism. Further, I present how specific theories try to describe the causes of savant syndrome, and connect the theories to results of empirical research in order to give an overall view of the syndrome’s appearance. I will also compare the theories and evaluate their strengths and weaknesses with respect to the discoveries and progress that has been made within the area of savant syndrome research.

Indiana University-Purdue University Indianapolis (IUPUI) / The empathizing-systemizing (E-S) theory states that individuals with autism spectrum conditions (ASC) can be identified by a deficit in empathy (social skills, communication skills, and theory of mind) and a propensity for systemizing (islets of ability, obsessions with systems, and repetitive behavior). This theory has been tested in various contexts, but never with adolescents between the ages of 12 and 16. The EQ-A (Empathizing Quotient for Adolescents) and the SQ-A (Systemizing Quotient for Adolescents) were administered to 47 adolescents between the ages of 12 and 16 who had been diagnosed with ASC and 97 adolescents with no reported physical or mental disorders to discover differences in empathizing and systemizing. To test the specific elements and predictions of the E-S theory, the EQ-A was divided into a set of three subscales derived by conceptually mapping items to factors corresponding to the concepts theoretically underlying the scale. The SQ-A was divided into subscales using factor analysis. It was found that all four subscales resulting from the factor analysis on the SQ-A were associated with obsessions with systems. A weak positive correlation was found between the SQ-A and the EQ-A. Although the EQ-A was able to differentiate significantly between individuals with an ASC and those without, the SQ-A was not. In addition, although the EQ-A and EQ-A subscales scores correlated with similar subscales scores of the GARS-2 (a well-validated existing autism screening test), the SQ-A and its subscales did not. Implications for the E-S Theory are discussed.