相信智力不变是否也认为个性难改?——个人属性内隐观的普遍性

动机理论的认知心理学派认为 ,学生对智力、个性等个人属性 ,是否先天固有不可改变的主观想法 ,将直接影响他们的学习和行为表现。其影响的范围 ,将取决于这类主观想法是否具有普遍性。比如 ,有些学生认为智力是父母遗传的 ,很难改变 ,这些学生会否同样认为个性、道德等 ,也是父母遗传 ,亦难改变 ?该研究希望了解是否有一主导思想 ,影响学生对智力、个性等不同个人属性 ,是否先天不变的整体看法。被试为中国长春市高中一年级的学生 ,总计 5 5 5人。研究采用问卷调查 ,通过比较多个结构方程模型 ,结果较倾向支持学生对个性、智力等五项个人属性有共通一致的内隐观     

The attentional cost of amplitude and directional requirements when pointing to targets

The aim of this study was to investigate the comparative cost of accuracy constraints in direction or amplitude for movement regulation. The attentional cost is operationally defined as the amount of disturbance created in a secondary task by the simultaneous execution of a pointing task in direction or amplitude. The cost is expressed in terms of modifications in response to a secondary task, consisting of a foot-pedal release in response to an auditory stimulus (probe). The probe was introduced during the programming portion or the first, middle, or last portion of the pointing movement. The independent variables were the requirements of the task: direction or amplitude, and the moments of occurrence of the probe. Subjects were submitted to eight experimental conditions: (1) simple foot reaction time to a buzzer; (2) single directional task; (3) single amplitude task; (4) dual directional task (i.e. directional task with probe); (5) dual amplitude task (i.e. amplitude task with probe); (6) retest of foot simple reaction time; (7) retest of single directional task; and (8) retest of single amplitude task. Regulation in direction was more attention-demanding than regulation in distance in terms of programming. During pointing in amplitude, probe RT increased monotonically from start to end of movement execution, whereas directional pointing did not lead to any significant probe RT changes. These results emphasize the specific attentional loads for directional and amplitude pointing tasks, hence the involvement of different central nervous system mechanisms for the programming and regulation of the directional and amplitude parameters of pointing movements.