L’objectif principal de la présente thèse est d’étudier la nature multifactorielle des difficultés attentionnelles que présentent les personnes ayant subi un traumatisme craniocérébral léger (TCCL). Plus spécifiquement, nous avons voulu cerner l’impact des symptômes de douleur, ainsi que de facteurs émotifs et de personnalité, sur le fonctionnement attentionnel de personnes ayant eu un TCCL. Afin d’atteindre cet objectif, cette thèse présente trois articles. Dans le premier article, l’impact cognitif/neuropsychologique de la douleur chronique (DC) et de ses variables psychologiques concomitantes a été examiné par le biais d’une recension des écrits. Le deuxième article présente une étude expérimentale portant sur les relations entre des variables liées à la douleur et à l’affectivité, et le fonctionnement attentionnel de personnes ayant subi un TCCL étant à différents stades de récupération, comparativement à un groupe témoin normal. Enfin, un troisième article décrit une étude expérimentale qui a été menée afin d’explorer les associations entre certains facteurs de personnalité (neuroticisme, extraversion) et l’efficacité attentionnelle chez des participants normaux, ainsi que chez des personnes ayant subi un TCCL. Les résultats des articles présentés dans cette thèse démontrent que le TCCL en soi peut nuire au fonctionnement attentionnel, puisque des déficits de l’attention peuvent être observés sur des tâches neuropsychologiques qui mesurent les temps de réaction avec précision. Des variables concomitantes au TCCL peuvent aussi avoir un impact négatif sur l’attention sélective; la présence de symptômes de douleur nuit à la performance sur des tâches d’attention et certains traits de personnalité sont associés à l’efficacité attentionnelle ou aux symptômes post-commotionnels. Cette thèse montre donc que divers facteurs peuvent contribuer aux difficultés d’attention des personnes ayant subi un TCCL. Le neuropsychologue devrait utiliser des tâches sensibles aux atteintes, parfois plus subtiles, que présentent les personnes ayant eu un TCCL lorsqu’il tente de comprendre les difficultés attentionnelles de cette clientèle. De plus, les variables associées à la douleur et certains traits de personnalité devraient être systématiquement évalués lors de l’examen neuropsychologique post-TCCL. / The main goal of this thesis is to study the multifactorial nature of attentional difficulties presented by individuals having sustained a mild traumatic brain injury. Specifically, we sought to determine how pain symptoms, emotional factors, and personality variables impact attentional functioning following mild traumatic brain injury. To achieve this, the present thesis describes the findings of three articles. In the first article we reviewed studies that had investigated the cognitive/neuropsychological impact of pain symptoms, and of psychological variables related to chronic pain. The second article presents the findings of an experimental study in which we explored the relationships between symptoms of pain, emotional factors, and attentional functioning in individuals with mild traumatic brain injury in different phases of recovery. A third article describes the results of another experimental study exploring the associations between personality variables, and attentional efficacy in both normal individuals and in those having sustained a mild traumatic brain injury. Findings of the studies described in this thesis demonstrate that mild traumatic brain injury can decrease attentional efficacy, as attentional deficits can be observed on certain neuropsychological tasks that precisely measure reaction times. Variables concomitant to mild traumatic brain injury can also negatively impact attention; the presence of pain symptoms is associated with decreased performance on attention tasks, and certain personality traits are associated with attentional efficacy or with post-concussion symptoms. This thesis thus demonstrates that various factors contribute to the attentional difficulties presented by persons with mild traumatic brain injury. The neuropsychologist should opt to use cognitive tasks sensitive to mild brain injury when exploring the attentional complaints of these individuals. As well, a thorough evaluation of variables related to pain, and of personality traits should be systematically conducted in the context of a post-MTBI neuropsychological examination.

L’objectif principal de la présente thèse est d’étudier la nature multifactorielle des difficultés attentionnelles que présentent les personnes ayant subi un traumatisme craniocérébral léger (TCCL). Plus spécifiquement, nous avons voulu cerner l’impact des symptômes de douleur, ainsi que de facteurs émotifs et de personnalité, sur le fonctionnement attentionnel de personnes ayant eu un TCCL. Afin d’atteindre cet objectif, cette thèse présente trois articles. Dans le premier article, l’impact cognitif/neuropsychologique de la douleur chronique (DC) et de ses variables psychologiques concomitantes a été examiné par le biais d’une recension des écrits. Le deuxième article présente une étude expérimentale portant sur les relations entre des variables liées à la douleur et à l’affectivité, et le fonctionnement attentionnel de personnes ayant subi un TCCL étant à différents stades de récupération, comparativement à un groupe témoin normal. Enfin, un troisième article décrit une étude expérimentale qui a été menée afin d’explorer les associations entre certains facteurs de personnalité (neuroticisme, extraversion) et l’efficacité attentionnelle chez des participants normaux, ainsi que chez des personnes ayant subi un TCCL. Les résultats des articles présentés dans cette thèse démontrent que le TCCL en soi peut nuire au fonctionnement attentionnel, puisque des déficits de l’attention peuvent être observés sur des tâches neuropsychologiques qui mesurent les temps de réaction avec précision. Des variables concomitantes au TCCL peuvent aussi avoir un impact négatif sur l’attention sélective; la présence de symptômes de douleur nuit à la performance sur des tâches d’attention et certains traits de personnalité sont associés à l’efficacité attentionnelle ou aux symptômes post-commotionnels. Cette thèse montre donc que divers facteurs peuvent contribuer aux difficultés d’attention des personnes ayant subi un TCCL. Le neuropsychologue devrait utiliser des tâches sensibles aux atteintes, parfois plus subtiles, que présentent les personnes ayant eu un TCCL lorsqu’il tente de comprendre les difficultés attentionnelles de cette clientèle. De plus, les variables associées à la douleur et certains traits de personnalité devraient être systématiquement évalués lors de l’examen neuropsychologique post-TCCL. / The main goal of this thesis is to study the multifactorial nature of attentional difficulties presented by individuals having sustained a mild traumatic brain injury. Specifically, we sought to determine how pain symptoms, emotional factors, and personality variables impact attentional functioning following mild traumatic brain injury. To achieve this, the present thesis describes the findings of three articles. In the first article we reviewed studies that had investigated the cognitive/neuropsychological impact of pain symptoms, and of psychological variables related to chronic pain. The second article presents the findings of an experimental study in which we explored the relationships between symptoms of pain, emotional factors, and attentional functioning in individuals with mild traumatic brain injury in different phases of recovery. A third article describes the results of another experimental study exploring the associations between personality variables, and attentional efficacy in both normal individuals and in those having sustained a mild traumatic brain injury. Findings of the studies described in this thesis demonstrate that mild traumatic brain injury can decrease attentional efficacy, as attentional deficits can be observed on certain neuropsychological tasks that precisely measure reaction times. Variables concomitant to mild traumatic brain injury can also negatively impact attention; the presence of pain symptoms is associated with decreased performance on attention tasks, and certain personality traits are associated with attentional efficacy or with post-concussion symptoms. This thesis thus demonstrates that various factors contribute to the attentional difficulties presented by persons with mild traumatic brain injury. The neuropsychologist should opt to use cognitive tasks sensitive to mild brain injury when exploring the attentional complaints of these individuals. As well, a thorough evaluation of variables related to pain, and of personality traits should be systematically conducted in the context of a post-MTBI neuropsychological examination.

Previous research has focused limited attention on how personality affects job search for university educated people in work and no studies have focused on the difference between active and passive job seekers. This survey-based study that examined university educated economists and engineers with 5-25 years of experience, showed that career ambition mediated active job search for the personality dimensions of openness, agreeableness and extraversion and also gave clear evidence that active job seekers have lower levels of job satisfaction, and higher levels of career ambition, agreeableness and extraversion, compared with passive job seekers. These findings provide a more nuanced picture of the impact of different recruitment strategies and provide a starting point for in-depth studies on passive job seekers / Tidigare forskning har riktat begränsad uppmärksamhet mot hur personlighet påverkar jobbsökande för akademiker i arbete och inga studier har fokuserat på skillnaden mellan aktivt och passivt jobbsökande. Denna enkätbaserade studie som undersökt universitetsutbildade ekonomer och ingenjörer med 5-25 års erfarenhet, visade att karriärambition medierade aktivt jobbsökande för personlighetsdimensionerna öppenhet, samstämmighet och extraversion och gav också tydliga belägg för att aktivt jobbsökande har lägre grad av arbetstillfredställelse, och högre grad av karriärambition, samstämmighet och extraversion, jämfört med passivt jobbsökande. Dessa rön ger en mera nyanserad bild av konsekvenser av olika rekryteringsstrategier och utgör en utgångspunkt för fördjupade studier beträffande passivt jobbsökande.

The purpose of this research is to investigate if there is a significant difference in literacy skills between Level-Two extroverts and introverts after three years of English instruction at the community-college level.

Recent studies have suggested a role of two polymorphisms of the dopamine D4 receptor gene (DRD4 exon III and –521C/T) in the modulation of personality traits such as ‘novelty seeking’ or ‘extraversion’, which are supposed to be modulated by individual differences in dopaminergic function. However, several replication studies have not provided positive findings. The present study was performed to further investigate whether DRD4 exon III and –521C/T are associated with individual differences in personality. One hundred and fifteen healthy German volunteers completed the NEO-Five-Factor Inventory (NEO-FFI) and were genotyped for the two DRD4 polymorphisms. We found no association between DRD4exon III and –521C/T, respectively, and estimated novelty seeking, NEO-FFI extraversion or other personality factors. Our findings are in line with several earlier studies which have failed to replicate the initial association results. Hence, our data do not provide evidence for a role of DRD4 exon III and the –521C/T polymorphism in the modulation of novelty seeking and extraversion. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.

Since the increased popularity of social media, new marketing strategies have been developed by companies and marketers in order to advertise more effectively. This has concluded in a new marketing strategy originated from celebrity endorsement, called influencer marketing, which is implied by various brands today and often used on the social media platform Instagram. Influencer marketing is a strategy where a brand invests in an individual who has a big influence over its followers, with the purpose to recommend a brand or a product. The issue however is that there are thousands of influencers, and companies have to be selective when choosing who to collaborate with. Furthermore, there are studies examining factors which have an effect on attitudes and purchase intention, but very few study purchase behaviour. The purpose of this paper is to study which factors of an influencer have an effect on consumers’ purchase behaviour. This will be done by examining commerciality, entertainment and factors included in source credibility towards purchase. There was also an interest to investigate if certain personality types of consumers were more prone to make a purchase. Because of this, extraversion and self-monitoring were also included in relation to purchase behaviour. Furthermore, two types of exposure will also be examined to see their effect on purchase. For this study a quantitative approach was applied with the use of a survey questionnaire which resulted in 524 valid answers. The results showed that commerciality, attractivity and similarity had a significant effect on purchase, whereas trustworthiness, knowledge and entertainment did not. Furthermore, personality traits are also a determinant factor as high levels of extraversion and self-monitoring show to have an impact on purchase. Lastly, purchase seems to increase if an individual spends more time on Instagram or follows more influencers, meaning exposure also had a significant effect. In conclusion, our results show clear differences in the dominating factors which have been previously researched towards purchase intention. Attractivity is the factor which has most influence over purchase, closely followed by commerciality. / Uppkomsten av sociala medier har förändrat människors sätt att söka och samla information. Detta har påverkat företags val av strategi för att nå ut till sina kunder på bästa möjliga sätt. Den strategi som kommit att bli dominerande bland företag på den sociala plattformen Instagram är influencer marketing. Denna strategi innebär att företag investerar i en individ som har stort inflytande över sina följare för att marknadsföra en viss produkt eller tjänst. Detta görs i syfte att påverka individens medvetenhet och uppfattning om företag men även dess köpintention för att potentiellt utföra ett köp. Influencer marketing innebär dock att en vanlig person utan att behöva vara känd kan ha ett stort inflytande över sina följare vilket resulterat i tusentals olika influensers. På grund av detta måste företag vara selektiva vid valet av influenser för att marknadsföringsstrategin ska vara effektiv. Tidigare studier har undersökt vilka faktorer som har en inverkan på individens attityd och köpintention men endast ett fåtal undersöker köpbeteende. Syftet med denna studie är att undersöka vilka faktorer av en influenser som påverkarkonsumenters köpbeteende. Detta kommer att göras genom att studera faktorerna kommersialitet, underhållning och de faktorer som ingår i modellen source credibility gentemot köp. Studien syftar även till att undersöka om individer med en viss personlighet är mer benägna att utföra ett köp, därav inkluderades extraversion och self-monitoring i relation till köpbeteende. Vidare undersöks effekten av två typer av exponering i förhållande till köp. För studien användes en kvantitativ insamlingsmetod som bestod av en enkät där 524 giltiga svar samlades in. Resultaten visade att faktorerna kommersialitet, attraktivitet och likhet hade en signifikant effekt på köp. Däremot visade faktorerna trovärdighet, kunskap och underhållning ingen signifikant effekt. Från resultaten framgick det även att personlighetstyp är en avgörande faktor där hög grad av extraversion och self-monitoring har inverkan på köp. Dessutom uppvisar resultaten att köp ökar om en individ spenderar mer tid på Instagram eller om hen följer fler influensers, vilket innebär att exponering har en betydande effekt. Slutligen visar våra resultat tydliga skillnader avseende de dominerande faktorer som tidigare undersökts i relation till köp. Faktorn attraktivitet har störst inflytande över köp följt av kommersialitet.

À l’extrémité Est des Caraïbes, la Barbade importe quelques 90% de ses aliments. Les menaces croissantes liées aux changements climatiques, aux maladies non-transmissibles, à la réduction des mobilités due à la pandémie de COVID-19 et aux prix éternellement en hausse ont remis en évidence la vulnérabilité de ce territoire insulaire exigu et l’importance de la souveraineté alimentaire. L’autosuffisance alimentaire est toutefois un projet ambitieux à la Barbade vu la petite taille de l'île, ses sols et sa biodiversité appauvris par trois siècles de monoculture de canne à sucre, et une pression déjà lourde sur ses ressources limitées en eau douce. En plus des contraintes environnementales de l'île, des enjeux sociaux et économiques freinent également la transition vers un système alimentaire autonome. Par exemple, le travail agricole, stigmatisé par l'histoire coloniale, l’esclavage et la mondialisation, est souvent peu attractif pour de nombreux habitants. Puis, l’économie barbadienne, toujours basée sur le tourisme, les imports et une agriculture destinée aux exports, présente des barrières structurelles importantes empêchant son indépendance vis-à-vis du marché global. Cette étude cherche à comprendre les défis socio-environnementaux qui freinent les changements positifs dans le système alimentaire de la Barbade et à stimuler la discussion dans la communauté pour identifier des pistes de solutions assurant à la fois la réalisation de la sécurité alimentaire, soit l’accès aux aliments, et de la souveraineté alimentaire, soit le droit du peuple à définir ses propres politiques agricoles et alimentaires. Cette recherche a deux buts principaux : d’abord, d’offrir une réflexion critique sur l’héritage colonial de la Barbade et ses implications en agriculture; puis, d’identifier des avenues agraires qui respectent les limites socio-environnementales de l’île, à travers l’évaluation de modèles utilisés localement et dans des environnements semblables dans le monde. L’étude de 26 entretiens semi-dirigés et de l’observation participante effectués dans les champs, marchés et cuisines de la Barbade d’août 2021 à avril 2022 met en lumière les habitudes, perceptions et ambitions des Barbadiens et Barbadiennes en termes d’alimentation, d’agriculture et de système alimentaire. En plus d’observations plus larges sur les phénomènes sociaux et politiques barbadiens, permises par une longue immersion sur l’île débutant en 2020, ces méthodes identifient les causes sous-jacentes et les processus persistants qui maintiennent le système alimentaire barbadien dans la vulnérabilité. À travers un partenariat avec des organismes agro-alimentaires locaux et la réalisation d’un film documentaire et de contenu vidéo pour les médias sociaux, ce projet célèbre les solutions au niveau local et régional et offre l’opportunités d’amener plus loin la discussion entre les différents acteurs à la Barbade, mais aussi avec d’autres communautés confrontées à des défis similaires. / It is estimated that Barbados imports nearly 90% of its food. Growing threats of climate change, non-communicable diseases, reduced mobilities due to COVID-19 and the ever-rising prices highlighted the vulnerability of the island and the importance of food sovereignty. However, aiming towards food self-sufficiency is an ambitious project in Barbados, considering the island’s small size, an already heavily used limited freshwater resource, and impoverished soils and biodiversity due to three centuries of sugar cane monoculture. In addition to those environmental constraints, social and economic issues also hinder change. For example, agricultural work, stigmatized by colonial history, slavery and globalization, is often unattractive to the locals. Furthermore, the Barbadian tourism-based economy and export-oriented agriculture present significant structural barriers to building independence from the global market. This research project seeks to build an understanding of and stimulate the discussion on the socio-environmental challenges that prevent positive changes in Barbados’ food system to overcome them, to ensure that both food security, or access to food, and food sovereignty, or the right of the people to define their own agricultural and food policies, are fulfilled. The project has two main goals. First, to bring a critical perspective on the colonial heritage of Barbados and its implications in agriculture. Second, to identify agrarian avenues that respect the socio-environmental limits by evaluating the models used locally and in similar environments around the world. A study of 26 semi-directed interviews and participant observation in the fields, markets and kitchens of Barbados from August 2021 to April 2022 provides insights into the habits, perceptions and aspirations of Barbadians in terms of food, agriculture and the food system. Together with wider observations of the Barbadian society and politics, allowed by a long-term immersion on the island starting in 2020, these methods identify some of the underlying causes and perpetuating processes at play in the unsustainable food system. Through a partnership with local agri-food organizations and the production of a documentary film and video content for social media, this research project celebrates the solutions found at the local and regional level and offers opportunities for further discussion with stakeholders in Barbados, but also in other communities facing similar challenges.

Recently, multi-source feedback has been a popular way of providing performance-related feedback to individuals in many organizations. Many who use multi-source feedback consider Rating Convergence, others seeing target individuals as they see themselves, to be a positive outcome of this process. However, the variables that account for Rating Convergence are not known. This study investigated whether the personality factor Extroversion and Behavioral Consistency, acting as a moderator variable, could account for Self-other Rating Convergence, particularly the Convergence between self and peer Ratings. The sample consisted of 235 mid-level managers from a variety of industries who were participants in individual career development workshops. Using structural equation modeling, the results indicated that a model consisting of a single Extroversion factor could account for the convergence of self-peer ratings. This finding calls into question the significance of Rating Convergence when using multi-source rating instruments that provide feedback on trait characteristics since it may be heavily influenced by a single personality factor rather than observers' comprehensive understanding of the ratee's performance.

O Câncer de Esôfago é uma das neoplasias mais agressivas do trato gastrointestinal; é considerado como a nona neoplasia mais comum no mundo, além de ter altas taxas de mortalidade. A doença pode ser desencadeada por hábitos de vida, tais como etilismo e tabagismo, e também por fatores intrínsecos ao indivíduo. De todo modo, interfere significativamente em vários setores da vida do sujeito. Uma doença como o câncer pode conter uma tentativa simbólica para compensar uma atitude unilateral do indivíduo, ao relacionar-se com o ambiente e consigo mesmo. Acredita-se que conhecer aspectos do funcionamento e da dinâmica psíquica do sujeito pode contribuir para o foco do tratamento psicológico, de forma a propiciar intervenções psicológicas precoces e a auxiliar as demais equipes assistenciais nos cuidados e no modo de interação com o paciente. Entre elementos da estrutura psíquica do sujeito, buscou-se a tipologia psicológica dos referidos pacientes; para tanto, foi utilizado o Questionário de avaliação tipológica - QUATI (Zacharias, 2003). Além disso, valemo-nos de aspectos contidos na avaliação psicológica, rotina da instituição, com a finalidade de acessarmos as particularidades de cada um dos pacientes, especialmente no que se refere à reação ao diagnóstico e ao significado atribuído à doença. O estudo pode ser considerado como transversal, exploratório e descritivo. Foram incluídos 90 pacientes, derivados de análise estatística. Foram sujeitos da pesquisa pacientes maiores de 18 anos com diagnóstico de câncer de esôfago; com ensino fundamental completo; virgens de tratamento; atendidos em primeira consulta, no ambulatório de cirurgia do aparelho digestivo, do Instituto do Câncer do Estado de São Paulo (ICESP-HCFMUSP). Encontramos esses pacientes em sala de espera da consulta médica, onde foram informados sobre o objetivo da pesquisa; e, àqueles que aceitaram participar, foi aplicado o termo de consentimento livre e esclarecido, seguido da avaliação psicológica (rotina da instituição) e aplicação do instrumento. Os resultados indicaram que a maior parte da nossa amostra tem uma atitude introvertida. O tipo psicológico mais comum foi o introvertido sensação, com função auxiliar sentimento. A partir da avaliação psicológica, constatou-se uma variedade de mecanismos defensivos para minimização da angústia. A grande parte dos pacientes valeu-se de defesas adaptativas diante do processo de adoecimento. Conclui-se que, no atendimento com esses pacientes, torna-se necessária uma postura prática e objetiva dos profissionais de saúde, em que se busque fornecer orientações com base na realidade dos pacientes, assim como ter um modo de agir empático, com o estabelecimento de vínculo significativo, mas respeitando os limites dos pacientes, sobretudo ao que se refere à forma reservada e introspectiva de interagirem com o mundo e com as pessoas que os cercam / Esophageal cancer is one of the most aggressive neoplasms of the gastrointestinal tract, and can be triggered by life habits such as alcoholism and smoking and factors intrinsic to the individual. A disease such as cancer can hold a symbolic attempt to compensate for a onesided attitude of the individual. It is believed that knowing aspects of the psychic dynamics of the person, can contribute to the focus of a psychological treatment, in order to provide early psychological interventions, as well as assisting other attending teams in the care of and interaction with the patient. Among the psychic structure elements of a subject, we looked for the psychological typology of these patients. Typological Assessment Questionnaire was used to evaluate the psychological typology. In addition, we drew on aspects from within the psychological assessment, routine of the institution, in order to access the particularities of each one of the patients, especially concerning their reaction to the diagnosis and the meaning attributed to the disease. Ninety patients were included. They were over 18 years old, having completed middle-school education, diagnosed with esophageal cancer, and interviewed during their first medical appointment at the Digestive Surgery Clinic at the Cancer Institute of the State of São Paulo (ICESP-HCFMUSP). We met these patients in the waiting room, where they were informed of the purpose of the survey. Those who agreed to participate, were given the terms of free and informed consent, followed by a psychological evaluation and the application of the instrument used. The results indicated a predominant introverted attitude. The most common psychological type was the introverted feeling, with feeling as a secondary function. From this psychological evaluation, we found a variety of defensive mechanisms to minimize the anguish. Most of the patients made use of adaptive defenses when facing the illness process. Therefore, when attending these patients, health professionals must have a practical and objective posture, seeking to guide the patients according to their reality. In addition, they should be empathetic in their manner, establishing significant bond, but respecting the patients\' limits, especially when it comes to their reserved and introspective way of interacting with the world and the people around them

O conhecimento de características das pessoas auxilia a individualizar a maneira de estruturar a prática de tarefas, o fornecimento de informação e a seleção de pessoas mais aptas a desempenhar certas funções. Há evidências de que essas características individuais, como traços de personalidade, podem afetar a aprendizagem de habilidades motoras. Investigar o efeito de diferentes estruturas de prática na aquisição de uma habilidade motora em indivíduos extrovertidos e introvertidos foi o objetivo deste trabalho. Noventa e seis universitários de ambos os sexos foram selecionados depois de responder o EPQ (Eysenck Personality Questionnaire). A tarefa envolveu o pressionamento seqüencial de teclas em duas fases: aquisição (108 tentativas, em três variações da tarefa, exceto os grupos de prática constante, que executaram apenas uma variação) e transferência (imediata e atrasada, cada uma com 12 tentativas). Os participantes foram alocados em seis grupos de prática, formados com a combinação do traço Extroversão/Introversão e a estrutura de prática (constante, blocos e aleatória). As medidas envolveram o erro global, o erro de timing relativo e o erro de timing absoluto. Os resultados indicaram que, além de ter havido aprendizagem da tarefa motora, o desempenho dos introvertidos em relação aos extrovertidos foi melhor no início da aquisição e pior na transferência. Conclui-se que, independentemente da estrutura de prática, as características individuais relativas à Extroversão/Introversão influenciam não só o desempenho, mas também a aprendizagem motora / The knowledge of personal characteristics aids to individualize the way practice is scheduled and information is provided, as well as to selecting better suitable people to carry out certain functions. There is evidence that these individual characteristics, for instance personality traits, might affect the learning of motor skills. The purpose of this study was to investigate the effect of different practice schedules on the acquisition of a motor skill in extraverts and introverts. 96 undergraduate students were selected after answering the EPQ (Eysenck Personality Questionnaire). The task involved a sequential key-press and the design comprised two phases: acquisition (108 trials, at three task variations, except the constant groups, which performed only one variation) and transfer (immediate and delayed, 12 trials each). The participants were allocated in one of six practice groups, formed by the combination of Extraversion/Introversion trait and the practice schedule (constant, blocked and random). Measurement involved global error, relative timing error and absolute timing error. The results showed that, not only did learning occur, but also the performance of introverts, in comparison with extraverts, was higher at the beginning of acquisition and lower on transfer. As a conclusion, regardless of the practice schedule, individual characteristics of Extraversion/Introversion have influence over motor performance, as well as over motor learning