Subjective discriminability of invisibility: A framework for distinguishing perceptual and attentional failures of awareness

Conscious visual perception can fail in many circumstances. However, little is known about the causes and processes leading to failures of visual awareness. In this study, we introduce a new signal detection measure termed subjective discriminability of invisibility (SDI) that allows one to distinguish between subjective blindness due to reduction of sensory signals or to lack of attentional access to sensory signals. The SDI is computed based upon subjective confidence in reporting the absence of a target (i.e., miss and correct rejection trials). Using this new measure, we found that target misses were subjectively indistinguishable from physical absence when contrast reduction, backward masking and flash suppression were used, whereas confidence was appropriately modulated when dual task, attentional blink and spatial uncertainty methods were employed. These results show that failure of visual perception can be identified as either a result of perceptual or attentional blindness depending on the circumstances under which visual awareness was impaired.     

Représentations professionnelles,satisfaction au travail et choix de carrière des personnels infirmiers : le rôle des valeurs d’autonomie

We are interested in factors which can incite nurses to abandon their profession. In this frame, job satisfaction appears as a major explanatory factor, depending on the status granted to nurses’ “own role”. Besides, several studies show the importance of values concerning job satisfaction. Then, and in reference to the concept of professional representations, we consider that nurses’ job satisfaction depends on the importance of the own role in the representation of their function, all the more that Autonomy values are essential for them. A study, realized with regis tered and student nurses, confirm this approach, so underlining the crucial role of these values for the job satisfaction of nurses.     

Is ZF a hack?: Comparing the complexity of some (formalist interpretations of) foundational systems for mathematics

This paper presents Automath encodings (which are also valid in LF/λP) of various kinds of foundations of mathematics. Then it compares these encodings according to their size, to find out which foundation is the simplest.

The systems analyzed in this way are two kinds of set theory (ZFC and NF), two systems based on Church's higher order logic (Isabelle/Pure and HOL), three kinds of type theory (the calculus of constructions, Luo's extended calculus of constructions, and Martin-Löf's predicative type theory) and one foundation based on category theory.

The conclusions of this paper are that the simplest system is type theory (the calculus of constructions), but that type theories that know about serious mathematics are not simple at all. In that case the set theories are the simplest. If one looks at the number of concepts needed to explain such a system, then higher order logic is the simplest, with twenty-five concepts. On the other side of the scale, category theory is relatively complex, as is Martin-Löf's type theory.

(The full Automath sources of the contexts described in this paper are one the web at http://www.cs.ru.nl/~freek/zfc-etc/.)     

大学生A型行为类型及其学业情绪特点

用A型行为类型量表和大学生一般学业情绪问卷对218名大学生进行了调查。结果发现：被调查大学生中A型行为者（A和A^-）约占25％。大学生的学业情绪以正性情绪为主,A型行为者的比例和学业情绪的得分在性别、年级、专业变量上无显著差异。不同行为类型者学业情绪的特点：B型者（B或B^-）的羞愧、气愤、厌烦、焦虑、自豪、希望、愉快情绪均明显低于A型者（A或A^-）;B型者（B或B^-）的羞愧、气愤情绪明显低于极端中间型者;TH得分高者负性情绪多而不能放松;CH得分高的学生既有羞愧和气愤,又有自豪和希望。     

The Role of Perceived Social Support and Stress in the Type A Cognition-Symptom Relationship

The two main objectives of this research were to determine whether Type A cognitions are related to a broader range of symptoms than has traditionally been studied and to determine possible mediating variables. Past research and theory suggest that Type A individuals not only experience but also generate stress and interpersonal conflict (i.e., in keeping with a psychosocial vulnerability model). This psychosocial vulnerability may put Type A individuals at greater risk of experiencing a wide array of physical and psychological symptoms well beyond coronary heart disease (CHD), the health outcome typically investigated. Stress, interpersonal and non-interpersonal in nature, and perceived social support, were explored as possible mediators in the Type A cognition-symptoms relationship using structural equation modelling (SEM) in a university sample. Non-interpersonal stress and interpersonal stress mediated both the Type A cognition-psychological symptoms relationship and the Type A cognition-physical symptoms relationship. However, perceived social support only mediated the Type A cognition-psychological symptoms relationship. Results indicate that Type A individuals may experience psychosocial vulnerability, particularly reporting stress, which may put them at risk for the experience of negative health outcomes. Implications for cognitive therapy are discussed.

Type A behavior and work situation: associations with burnout and work engagement

The aim of the present study was to investigate Type A behavior as well as perceived work situation, and associations with burnout and work engagement. The associations in focus were investigated through hierarchical regressions in a sample (N= 329) of Swedish Information Communication Technology consultants. The findings indicated that both work situation and Type A behavior was correlated with work engagement and burnout; however, no interactions between Type A behavior and work situation were elicited. The main conclusion was that the achievement striving aspect of Type A behavior appears as "non-toxic" and is related only to work engagement. However, the irritability/impatience aspect appears to be responsible for burnout complaints among Type A individuals, possibly through negative effects of the mood itself than through perceived stress at work.     

Decomposing coronary-prone behavior: Dimensions of type a behavior in the Videotaped Structured Interview

This study examined the factorial structure of data generated in the Videotaped Structured Interview for assessment of Type A behavior. Based on the literature, it was argued that there are at least three distinct concepts of Type A behavior, focused on competitiveness and pressured drive, speech characteristics, and hostility, respectively. These three concepts were clearly represented among the factors from factor analyses based on data from 282 subjects. Three factors represented speech and psychomotor characteristics, where the first reflected interactions between subject and interviewer (e.g., response latency, interruptions), the second tempo of speech (accelerating, dysrhythmic and rapid speech), and the third oral gestures (e.g., expiratory sighs). Hostility was reflected in two factors, one defined by emotional intensity (e.g., anger when recalling paat event) and the other hostility expressed towards the interviewer. Pressured drive dominated a content factor reflecting self-awareness of Type A behavior. Finally, there was one factor related to psychomotor tension. Through further factor and item analyses, it was possible to combine these factors into three homogeneous and moderately intercorrelated subscales of Type A behavior reflecting Hostility, Speech Characteristics, and Self-Awareness of Type A behavior. These scales showed good interrater agreement and stability over two years. The Self-Awareness Scale was highly correlated with self-report measures of Type A behavior. The Hostility Scale, on the other hand, was moderately related to measures of Type A behavior, anger and hostility, but was unrelated to anxiety. The Speech Characteristic Scale, finally, was virtually unrelated to psychometric measures.     

‘Thank God I’m not a Jungian’

This article focuses less on the content of Jung's ideas than on ways in which they act as both invitation and challenge to engage with psyche. It explores the mythic framework of Jung's approach and how this can enable individuals to live in psychological and mundane worlds in which there can be no final certainties. It elaborates three particular aspects of Jung's thinking that I have found personally valuable: his generosity of vision, his insistence that individuals engage for and with themselves rather than relying on someone else's ideas, and his ponderings on the relationship between the individual and the collective. All three aspects seem to be important elements of the work of individuation.