Seeing Through Technology

In examining representations of cities, disease, and human biology, this paper reflects on what technologies reveal of the conditions to which they’re turned.

Playing an action video game reduces gender differences in spatial cognition

We demonstrate a previously unknown gender difference in the distribution of spatial attention, a basic capacity that supports higher-level spatial cognition. More remarkably, we found that playing an action video game can virtually eliminate this gender difference in spatial attention and simultaneously decrease the gender disparity in mental rotation ability, a higher-level process in spatial cognition. After only 10 hr of training with an action video game, subjects realized substantial gains in both spatial attention and mental rotation, with women benefiting more than men. Control subjects who played a non-action game showed no improvement. Given that superior spatial skills are important in the mathematical and engineering sciences, these findings have practical implications for attracting men and women to these fields.     

马克思与罗尔斯论资本主义及市场的正义

马克思和罗尔斯似乎有着十分不同的正义观。马克思主张,正义概念的功能,在意识形态上表现为以主导生产模式所要求的操行,作为具有普遍约束性的律令。罗尔斯则主张,正义是社会制度的第一美德,它的法则可能被所有这样的人所认可:他们公正、合理地商讨的问题,是如何公平划分彼此之间在社会合作中的负担和利益。尽管体现在马克思和罗尔斯立场之间的种种重要不同仍然存在,但笔者认为,这两种正义观上显然不同的立场,是能够调和的。尽管受到黑格尔和康德的不同影响,马克思和罗尔斯的观点还是能显示出一致之处。在提出明确的正义政治概念时,罗尔斯认为,可以接受的正义原则,必须是在社会体制中能够实行的。这导致他的“康德式构成主义”,向黑格尔的观点靠近,在这一点上,马克思奠定了他对普遍的、社会先验的正义原则的拒斥。笔者认为,马克思和罗尔斯两人所追问的,都可以被看作是何种社会制度能够实现作为公平的正义原则。不过,其间仍有两点重要不同。首先,马克思憧憬的,似乎是一种超越休谟和罗尔斯所谓“正义环境”的社会,而对罗尔斯(2001,P177)来说,超越正义环境的社会则是乌托邦。其次,马克思认为,作为社会基础的市场关系应该被超越,因为这些市场关系天然地包含着生产者与生产的社会过程以及社会劳动产品的异化。虽然在超越正义环境的社会里,市场的消亡也许可能,罗尔斯却宣称,在要求必须公正解决竞争的任何社会里,市场消亡均不可能。笔者认为,如果将马克思对市场的拒绝,看作是从根本上拒绝“商品拜物教”,那么马克思和罗尔斯的立场就能调和。笔者的结论是,除了马克思关于未来无阶级社会概念中含有理想成分外,在资本主义及市场的正义观上,马克思和罗尔斯的立场相当接近。     

On-line control of pointing is modified by unseen visual shapes

Shapes that are rendered invisible through backward masking are still able to influence motor responses: this is called masked priming. Yet it is unknown whether this influence is on the control of ongoing action, or whether it merely influences the initiation of an already-programmed action. We modified a masked priming procedure (Schmidt, 2002) such that the critical prime-mask sequence was displayed during the execution of an already-initiated goal-directed pointing movement. Psychophysical tests of prime visibility indicated that the identity of the prime shapes were not accessible to participants for conscious report. Yet detailed kinematic analysis of the finger in motion revealed that masked primes had an influence on the pointing trajectories within 277ms of their appearance, 56ms earlier than the trajectory deviations observed in response to the visible masks. These results indicate that subliminal shapes can indeed influence the control of ongoing motor activity.     

Volition and the idle cortex: beta oscillatory activity preceding planned and spontaneous movement

Prior to the initiation of spontaneous movement, evoked potentials can be seen to precede awareness of the impending movement by several hundreds of milliseconds, meaning that this recorded neural activity is the result of unconscious processing. This study investigates the neural representations of impending movement with and without awareness. Specifically, the relationship between awareness and 'idling' cortical oscillations in the beta range (18-24Hz) was assessed. It was found that, in situations where there was awareness of the impending movement, pre-movement evoked potentials were associated with a decrease in beta range oscillations. In contrast, when awareness of the impending movement was not present, the onset of the pre-movement potential was associated with tonic levels of beta range oscillations. A model is considered where by distributed neural activity remains outside of conscious awareness through the persistence of tonic slow wave cortical oscillations.     

Application of a stress and coping model to antenatal depressive symptomatology

This study examined the utility of a stress/coping model of antenatal depressive symptomatology. The direct and moderating effects of appraisal, coping resources and coping strategies on depression were explored. A total of 242 primiparous women completed questionnaires during the third trimester of pregnancy. Predictors included life events, coping resources (social support, quality of women's earlier relationships with parents), appraisal (threat, self-efficacy) and coping strategies (wishful thinking, positive reappraisal, problem solving, emotional approach). Results of regression analyses indicated that higher depression was related to higher stressful life events, threat appraisal and wishful thinking coping, and lower positive reappraisal coping. The expected stress exacerbation effects of wishful thinking on depression were supported. There was no support for the expected stress buffering effects of coping resources and coping strategies on depression. Findings provide preliminary support for the use of a stress/coping model to guide future research into psychosocial predictors of antenatal depression.     

The nature of benefit finding in multiple sclerosis (MS)

This study examined the nature of benefit finding in MS and the adequacy of the Benefit Finding Scale (BFS; Mohr et al., 1999) as a comprehensive measure of perceived benefits in MS. A total of 502 people with MS completed questionnaires at Time 1 and 3 months later, Time 2 (n=404). Data on demographics and illness were collected at Time 1 and qualitative data on benefit finding was obtained at Time 2. Content analyses revealed seven benefit finding themes (personal growth, strengthening of relationships, appreciation of life, new opportunities, health gains, change in life priorities/goals and spiritual growth). Two of the themes were represented by several items on the BFS (personal, relationship growth), three were not reflected by items on the BFS (health, new opportunities, life priorities) and two were represented by one item each (spiritual, life appreciation).     

Dealing constructively with negatively evaluated emotional situations: the key to understanding the different reactions of teachers with high and low levels of emotional intelligence

Recent work on the distinctive features of emotions appraised as either negative or positive has links to the investigation of differences in levels of emotional intelligence. In a study with experienced teachers as participants, it was found that emotional reactions to positive or negative situations was moderated by level of emotional intelligence. The reactions to positively charged emotional situations involving students and peers were similar for teachers with high and low levels of emotional intelligence, although the low level group showed somewhat lower likelihood of making an “emotionally intelligent” response compared to the high level group. A much sharper contrast in response likelihood was found for negatively charged emotional situations involving students and peers. Teachers with high levels of emotional intelligence responded quite differently to those with low levels of emotional intelligence. The results indicate the prospect of clarifying a neglected area of exploration of differences in the likely behaviour of teachers differing in levels of emotional intelligence.