On the {↔, ∼} -reduct of the intuitionistic consequence operation

The intuitionistic consequence operation restricted to the language with (equivalence) and (negation) as the only connectives is axiomatized by means of a finite set of sequential rules of inference.To the memory of Professor Roman Suszko     

Individual values and well-being: The moderating role of personality traits

This study examined the role of values, traits and their interactions for the experience of eudaimonic and hedonic well-being. First wave studies on value and well-being relationships yielded inconsistent results suggesting that these relationships are moderated by other factors, possibly by personality traits. We asked a representative sample of adult Poles (N = 1161) to report on their personality traits (according to five-factor theory), values (conceptualised by Schwartz) and well-being (hedonic and eudaimonic). Results showed, that higher Extraversion, Emotional stability, Intellect, Agreeableness and Conscientiousness were related to higher well-being, confirming and expanding claims from personality theory of subjective well-being: stable predispositions are related not only to subjective, but also to eudaimonic well-being. Values expressing Openness to change, Self-transcendence and Conservation were also positively correlated with well-being, while the role of Self-enhancement was unclear. This confirmed that growth needs expressed in Openness to change and Self-transcendence values promote well-being, but also that values expressing deficiency needs can be positively related to well-being, possibly in specific circumstances. Finally, the two levels of personality (traits and values) proved to have a joint relationship to well-being: higher Conscientiousness and Agreeableness enhanced positive relationships of Openness to change and Self-transcendence with some aspects of well-being.     

Mirrors without warnings

Synthese - Veritism, the position that truth is necessary for epistemic acceptability, seems to be in tension with the observation that much of our best science is not, strictly speaking, true when...     

The Role of Emotional Content and Perceptual Saliency During the Programming of Saccades Toward Faces

Previous studies have shown that the human visual system can detect a face and elicit a saccadic eye movement toward it very efficiently compared to other categories of visual stimuli. In the first experiment, we tested the influence of facial expressions on fast face detection using a saccadic choice task. Face-vehicle pairs were simultaneously presented and participants were asked to saccade toward the target (the face or the vehicle). We observed that saccades toward faces were initiated faster, and more often in the correct direction, than saccades toward vehicles, regardless of the facial expressions (happy, fearful, or neutral). We also observed that saccade endpoints on face images were lower when the face was happy and higher when it was neutral. In the second experiment, we explicitly tested the detection of facial expressions. We used a saccadic choice task with emotional-neutral pairs of faces and participants were asked to saccade toward the emotional (happy or fearful) or the neutral face. Participants were faster when they were asked to saccade toward the emotional face. They also made fewer errors, especially when the emotional face was happy. Using computational modeling, we showed that this happy face advantage can, at least partly, be explained by perceptual factors. Also, saccade endpoints were lower when the target was happy than when it was fearful. Overall, we suggest that there is no automatic prioritization of emotional faces, at least for saccades with short latencies, but that salient local face features can automatically attract attention.