The relationship between confidence and self-concept — Towards a model of response confidence

According to Stankov [Stankov, L. (2000). Complexity, metacognition and fluid intelligence. Intelligence, 28, 121–143.] response confidence in cognitive tests reflects a trait on the boundary of personality and abilities. However, several studies failed in relating confidence scores to other known traits, including self-concept. A model of response confidence is proposed which predicts that confidence judgements do reflect self-concept, but only to the extent that they do not reflect a calibration process based on task-inherent cues. In the current study, 101 students completed various tests of cognitive abilities and skills as well as scales of the SDQ III measuring general academic and problem-solving self-concept. As expected, self-concept predicts a significant proportion of variance in the confidence factor that is over and above the influence of test scores.     

A counterchange mechanism for the perception of motion

A computational model for the perception of counterchange-specified motion is examined in detail and compared with various versions of the Reichardt motion detection model [Reichardt, W. (1961). Autocorrelation, a principle for the evaluation of sensory information by the central nervous system. In W. A. Rosenblith (Ed.), Sensory communication (pp. 303-317). New York: Wiley]. The counterchange model is composed of a pair of temporally biphasic subunits at two retinal locations, one detecting decreases and the other increases in input activation. Motion is signaled when both subunits are simultaneously excited, as determined by the multiplicative combination of their transient responses. In contrast with the Reichardt detector, which effectively tracks motion energy and accounts solely for results obtained with standard apparent motion stimuli (a surface is visible at one location, then at another), the counterchange model also accounts for the generalized apparent motion perceived between pairs of simultaneously visible surfaces. This indicates that standard apparent motion can be perceived via the same non-sequential, non-motion-energy mechanism as generalized apparent motion. There is no need for either an explicit delay mechanism to account for optimal motion perception at non-zero inter-stimulus intervals, or for inhibitory interaction between subunits to account for the absence of motion in the detector’s null direction (Barlow, H. B., & Levick, W. R., 1965). Both are emergent properties that result from the inhibitory states of the counterchange detector’s biphasic subunits. In addition to apparent motion, the counterchange principle potentially accounts for the perception of motion for drifting gratings, the short range motion perceived for random-dot cinematograms, and the motion perceived for continuously moving objects.     

A Dynamic Neural Field Model of Visual Working Memory and Change Detection

ABSTRACT— Efficient visually guided behavior depends on the ability to form, retain, and compare visual representations for objects that may be separated in space and time. This ability relies on a short-term form of memory known as visual working memory. Although a considerable body of research has begun to shed light on the neurocognitive systems subserving this form of memory, few theories have addressed these processes in an integrated, neurally plausible framework. We describe a layered neural architecture that implements encoding and maintenance, and links these processes to a plausible comparison process. In addition, the model makes the novel prediction that change detection will be enhanced when metrically similar features are remembered. Results from experiments probing memory for color and for orientation were consistent with this novel prediction. These findings place strong constraints on models addressing the nature of visual working memory and its underlying mechanisms.     

Happiness Revisited: Ontological Well-Being as a Theory-Based Construct of Subjective Well-Being

The current model of subjective well-being (SWB) has been operationalized as the unity of affective and cognitive dimensions concerning the evaluation of one’s life, called emotional well-being and life satisfaction, respectively. There has been no theoretical framework, however, by which the unity is explained. The present paper offers a new construct of subjective well-being in an attempt to show that the cognitive and affective dimensions of SWB can be unified using the concept of goal. The concept of goal refers to the life as a project when the concern is the evaluation of life as a whole. The evaluation of the whole life, moreover, should take a whole-time perspective into account if it is supposed to be ‘whole’. Ontological well-being (OWB) construct is structured in a theoretical framework by which the cognitive and affective components of the current conceptualization of SWB are reframed and interpreted in a whole time perspective. By taking as base the historical and philosophical resources of the affective and cognitive dimensions of subjective well-being, this new construct defines subjective well-being as one’s evaluation of life in both past and future time perspectives in addition to the present.     

Some animal specific fears are more specific than others: Evidence from attention and emotion measures

Using a visual search methodology we investigated the effect of feared animal stimuli on attention. Our results confirmed the important role of emotion on attention. All participants detected fear-relevant stimuli (snakes and spiders) faster than neutral (mushrooms) ones against a background of fruits. In addition, spider fearful participants were sensitized specifically to detect their feared stimulus (spiders), compared to their fear-relevant but non-feared (snakes) and neutral stimuli. However, for participants fearful of snakes there was no significant difference in detection latencies between the feared (snakes) and the fear-relevant but non-feared animal stimuli (spiders). The results from the attention task were mirrored in the emotional ratings, which showed that spider fear was highly specific, whereas snake fear was associated with a more generalized enhanced evaluation of all negative stimuli.     

Predicate Change

Journal of Philosophical Logic - Like belief revision, conceptual change has rational aspects. The paper discusses this for predicate change. We determine the meaning of predicates by a set of...     

The dark side of bodybuilding: the role of bodybuilding activities in compensation of frustrated basic psychological needs

The main purpose of the current study was to investigate the explanatory mechanism of the drive for muscularity on the relations between frustrated basic needs and diverse indicators of muscle dysmorphia. To achieve this purpose, in the first place, as a pilot study needed to pursue the hypotheses of the main study, Basic Psychological Needs Satisfaction and Frustration Scale was adapted to Turkish and its psychometric properties were examined. In the main study, data were collected from 245 men with a mean age of 22.73 (SD = 3.86), who were engaged in regular bodybuilding activities. After the adaptation of Muscle Appearance Satisfaction Scale, the indirect predictive effects of frustrated basic needs on muscle dysmorphia symptoms through the drive for muscularity were examined via two structural equation models. Also, the moderating role of the drive for muscularity in the associations between each of the frustrated needs and muscle dysmorphia symptoms was tested via another structural equation model. Results revealed that (1) both the composite score of frustrated basic needs and frustrated relatedness are indirect predictors of all muscle dysmorphia symptoms through drive for muscularity and (2) drive for muscularity has a moderating role only in the relation between frustrated relatedness and muscle dissatisfaction (i.e., an indicator of muscle dysmorphia). These findings did not only support the assumptions of Self Determination Theory (SDT) indicating the link between frustrated needs and ill-being situations but also provided preliminary evidence for a new direction of SDT studies.