Thesis (Ed.D.)--Teachers College, Columbia University, 1985. / Typescript; issued also on microfilm. Sponsor: J. R. Higgins. Dissertation Committee: A. M. Gentile. Includes bibliographical references: (leaves 48-52).

Thesis (Ed.D.)--Teachers College, Columbia University, 1970. / Typescript; issued also on microfilm. Sponsor: Paul E. Eiserer. Dissertation Committee: Anne Selley McKillop. Includes bibliographical references.

Thesis (M.A.)--The University of North Carolina at Greensboro, 2008. / Directed by George Michel; submitted to the Dept. of Psychology. Title from PDF t.p. (viewed Aug. 10, 2009). Includes bibliographical references (p. 66-77).

Thesis (M.A.)--The University of North Carolina at Greensboro, 2010. / Directed by George Michel; submitted to the Dept. of Psychology. Title from PDF t.p. (viewed Jul. 7, 2010). Includes bibliographical references (p. 76-86).

Thesis (Ph.D.) - University of Queensland, 2006. / Includes bibliography.

Orientador: Ana Maria Pellegrini / Banca: Sérgio Tosi Rodrigues / Banca: Cynthia Yukiko Hiraga / Resumo: A coordenação bimanual é um comportamento manifestado diariamente pelas pessoas na execução de tarefas do dia-a-dia. Controlar as duas mãos para varrer a casa, soltar pipa, costurar ou tocar piano são situações rotineiras que podem ser melhoradas e desempenhadas com precisão como resultado da prática. As tarefas unimanuais e as tarefas bimanuais que devem ser lideradas por uma das mãos, geralmente, são executadas apenas com a mão preferida, a mão direita para o maior número de pessoas. As ferramentas utilizadas nas tarefas do dia-a-dia são fabricadas para a mão direita e como conseqüência a diferença no desempenho é menor entre as mãos de pessoas com preferência manual esquerda. Manter um ritmo qualquer ou acertar alvos são tarefas que requeiram integridade de estruturas orgânicas, como por exemplo, os membros superiores e os sistemas visual e auditivo. O direcionamento da atenção visual pode ser muito importante na captura da informação para tocar alvos no plano horizontal, principalmente se as características espaciais e temporais das tarefas das duas mãos são diferentes. Contudo, as duas mãos estão separadas fisicamente e no desempenho em uma tarefa que requeira deslocamentos diferentes para as duas mãos o executante deve identificar a informação de uma das mãos para a execução precisa. O objetivo deste estudo foi verificar o efeito do direcionamento da atenção visual a uma das mãos no desempenho de uma tarefa bimanual com diferentes níveis de complexidade, em função da preferência manual. Pessoas com preferência manual direita e esquerda executaram uma tarefa de coordenação bimanual com deslocamentos dos membros superiores para o toque em um ou mais alvos que estavam igualmente distantes no plano horizontal e em intervalos temporais iguais ou diferentes. O direcionamento da atenção visual foi manipulado... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Bimanual coordination is a behavior showed by people during the performance of many daily tasks. Actions that require the control of the hands as to sweep the room, to free pipe, to sew or to play piano are very common actions that can be improved and performed with accuracy as a result of practice. The unimanual tasks and the bimanual tasks that must be led by one of the hands, in general, are performed by the preferred hand, the right hand for a large number of individuals. Tools used in daily tasks are tailored for right hand and as a consequence the difference in performance between hands is smaller for those left-handed. To keep moving in a rhythm or to reach targets are tasks that require a full functioning of organic structures as the upper limbs or visual and auditory systems. The direction of visual attention can be very important in capturing relevant information for touching targets in the horizontal plane mainly if the characteristics of tasks of the two hands are different. However, the hands are physically apart and in the performance of a task that requires different displacements for the two hands the performer must pick up information from one of the hands for performance accuracy. The objective of the present study was to verify the effect of directing visual attention to one of the hands in the performance of bimanual tasks with different levels of complexity as a function of hand preference. Right- and left-handers performed a bimanual coordination task with displacement of the upper arms to reach one or more targets that were equally distant in the horizontal plane and in equal or different temporal intervals. The direction of visual attention was manipulated in three experimental conditions, in a condition directed to the right hand, in another to the left hand and in a third condition of free choice of the performer. The variables selected... (Complete abstract click electronic access below) / Mestre

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Thesis (M.A.(Research Psychology)) --University of Limpopo, 2016. / Refer to document

Whether the hand you write with has any impact or says anything about you has been debated for hundreds of years. The most cited in the media today is an association between left-handedness and creativity. However, handedness has also been associated with intelligence, with a small advantage for those being right-handed, according to a systematic review. The present study compared intelligence, measured by the Wiener Matrizen Test, across groups who self-reported writing always with the right, always with the left, or sometimes with the left and sometimes with the right hand (ambidextrous), in a sample of 8,399 Swedish adults. The right-handed group had higher intelligence than both left-handed and ambidextrous groups, with an effect size for the right-left difference of 0.18 for males and 0.08 for females. Although of little consequence for any individual, such effects may have practical consequences at the group level, and should therefore be taken into account when comparing groups across demographic categories. Left-handedness is, for example, 23% more common among males than among females. / Huruvida den hand du skriver med har någon betydelse eller säger något om dig har debatterats i hundratals år. Mest citerat i media idag är en association mellan vänsterhänthet och kreativitet. Hänthet har också associerats med intelligens, med en liten fördel för högerhänta, enligt en systematisk litteraturgenomgång. Föreliggande studie jämförde intelligens, mätt med Wiener Matrizen Test, över grupper som själv-rapporterat att alltid skriva med höger, alltid med vänster, eller ibland med höger och ibland med vänster hand (ambidexter), i ett sampel med 8.399 vuxna svenskar. Gruppen med högerhänta hade högre intelligens än både vänsterhänta och ambidextra, med en effektstorlek för skillnaden mellan höger och vänster på 0,18 för mänoch 0,08 för kvinnor. Även om sådana effekter har liten betydelse för individen kan de ha praktiska konsekvenser på gruppnivå, och bör därför beaktas när man jämför grupper med olika demografiska kategorier. Vänsterhänthet är till exempel 23% vanligare bland män än bland kvinnor.

This study investigated the associations between (1) handedness (demonstrated preference of one hand for the performance of most unimanual tasks) and neuroanatomical asymmetry (measurable differences in width between the cerebral hemispheres) and (2) familial history of handedness (the presence of a left-handed sibling or parent of a right-handed subject) as an intervening factor in the relation between handedness and neuroanatomical asymmetry. Width measurements of the brain were derived from computerized tomographic ( CT) films and grouped in to categories by hand preference (measured by the Edinburgh Handedness Inventory) and family history. The measurements of right (n=68), right with left-· handed relatives (n=24), and left-handed (n=16) groups were then compared by width and other transformations of the brain measurements. Subjects were adults of both sexes who had been referred for neurologic examination and were diagnosed as free of major distorting brain pathology. Hemispheric widths were compared by group, as ratios (left÷right) and as differences (left-right). Analysis of variance revealed significant differences between right-hemisphere widths at three percentages of brain length in the posterior occipital and temporal-parietal portion of the right hemisphere. The two right-handed groups had significantly smaller right-hemisphere measurements than the left group at 80% (p=.03), 75% (p= .012), and 60% (p= .029) of brain length. There were no significant left-hemisphere differences between the groups. In terms of ratios of sides and differences between sides in the same brain region, the left - handed group was different from the right-handed group at the p Handedness appears to be moderately associated with neuroanatomical asymmetry. The differences in sizes of brain structures and their relation to functionally lateralized abilities may shed light on the processes by which each hemisphere becomes specialized to perform specific tasks and other aspects of individual differences.