Picture and pattern perception in the sighted and the blind: the advantage of the late blind

Two experiments are reported on the contribution of visual experience to tactile perception. In the first experiment, sighted, congenitally blind, and late blind individuals made tactual matches to tangible embossed shapes. In the second experiment, the same subjects attempted tactile identification of raised-line drawings. The three groups did not differ in the accuracy of shape matching, but both groups of blind subjects were much faster than the sighted. Late blind observers were far better than the sighted or congenitally blind at tactile picture identification. Four of the twelve pictures were correctly identified by most of the late blind subjects. The sighted and congenitally blind performed at comparable levels in picture naming. There was no evidence that visual experience alone aided the sighted in the tactile task under investigation, since they performed no better than did the early blind. The superiority of the late blind suggests that visual exposure to drawings and the rules of pictorial representation may help tactile picture identification when combined with a history of tactual experience.     

Assessing the local identifiability of probabilistic knowledge structures

Given a collection Q of problems, in knowledge space theory Doignon & Falmagne, (International Journal of Man–Machine Studies 23:175–196, 1985) the knowledge state of a student is the collection K ? Q of all problems that this student is capable of solving. A knowledge structure is a pair (Q, ), where is a collection of knowledge states that contains at least the empty set and Q. A probabilistic knowledge structure (PKS) is a knowledge structure (Q, , π), where π is a probability distribution on the knowledge states. The PKS that has received the most attention is the basic local independence model BLIM; Falmagne & Doignon, (British Journal of Mathematical and Statistical Psychology 41:1–23, 1988a, Journal of Mathematical Psychology 32:232–258, 1988b). To the best of our knowledge, systematic investigations in the literature concerning the identifiability of the BLIM are totally missing. Based on the theoretical work of Bamber and van Santen (Journal of Mathematical Psychology 29:443–473, 1985), the present article is aimed to present a method and a corresponding computerized procedure for assessing the local identifiability of the BLIM, which is applicable to any finite knowledge structure of moderate size.     

Data-driven sequence learning or search: What are the prerequisites for the generation of explicit sequence knowledge?

In incidental sequence learning situations, there is often a number of participants who can report the task-inherent sequential regularity after training. Two kinds of mechanisms for the generation of this explicit knowledge have been proposed in the literature. First, a sequence representation may become explicit when its strength reaches a certain level (Cleeremans, 2006), and secondly, explicit knowledge may emerge as the result of a search process that is triggered by unexpected events that occur during task processing and require an explanation (the unexpected-event hypothesis; Haider & Frensch, 2009). Our study aimed at systematically exploring the contribution of both mechanisms to the generation of explicit sequence knowledge in an incidental learning situation. We varied the amount of specific sequence training and inserted unexpected events into a 6-choice serial reaction time task. Results support the unexpected-event view, as the generation of explicit sequence knowledge could not be predicted by the representation strength acquired through implicit sequence learning. Rather sequence detection turned out to be more likely when participants were shifted to the fixed repeating sequence after training than when practicing one and the same fixed sequence without interruption. The behavioral effects of representation strength appear to be related to the effectiveness of unexpected changes in performance as triggers of a controlled search.     

Approach-avoidance goals and relationship problems,communication of stress,and dyadic coping in couples

Partners in romantic relationships differ in the extent to which they are oriented towards positive outcomes (e.g., intimacy) or away from negative outcomes (e.g., conflict). The present study examines these approach-avoidance relationship goals in relation to self-reported relationship problems, stress communication, and dyadic coping. Hypotheses were tested on a dyadic level (Actor-Partner Interdependence Model) using data from 368 couples. As expected, people endorsing approach goals reported fewer relationship problems, more effective stress communication, and better dyadic coping. People endorsing avoidance goals reported more relationship problems and poorer dyadic coping. Further, approach-oriented people tended to perceive their partner as being more communicative and more supportive, whereas avoidance-oriented people tended to perceive their partner as more communicative but less supportive. Reports by partners agreed with the self-reports of approach- and avoidance-oriented spouses concerning stress communication and dyadic coping. These findings highlight motivational factors in general, and orientation towards approach-avoidance goals in particular, as key features in understanding relationship maintenance.     

The Role of Art in Emotional-Moral Reflection on Risky and Controversial Technologies: the Case of BNCI

In this article, we explore the role that art can play in ethical reflection on risky and controversial technologies. New technologies often give rise to societal controversies about their potential risks and benefits. Over the last decades, social scientists, psychologists, and philosophers have criticized quantitative approaches to risk on the grounds that they oversimplify its societal and ethical implications. There is broad consensus amongst these scholars that stakeholders and their values and concerns should be included in decision-making about technological risks. It has also been argued that the emotional responses of people can shed important light on the ethical aspects of risk and uncertainty. However, people’s emotions can be narrowly focused and biased. This article therefore assesses the role that technology-inspired artworks can play in overcoming such biases, by challenging our imagination and providing us with different perspectives on possible technological developments and their implications for society. Philosophers have not yet studied such artworks, so this constitutes an entirely new field of research for scholars of risk and moral theory. In particular, we focus on the case of BNCI (Brain/Neural Computer Interface) technologies and related artworks. These technologies and artworks touch on questions of what it means to be human, thereby raising profound ethical and philosophical challenges. We discuss the experiences of artists, scientists, and engineers who are directly involved with BNCI technologies, and who were interviewed during a Hackathon at Amsterdam’s Waag Society in June 2016. Their views are analyzed in light of philosophical and aesthetic theories, which allows us to consider relevant ethical and conceptual issues as well as topics for further investigation.     

The detection of a tone added to a narrow band of noise: The energy model revisited

In an effort to determine whether cues related to changes in energy contribute to the detection of a tone added to a narrow band of noise, we examined the effect of level variation on detection thresholds. In the first experiment, the level of each waveform was randomly varied on each presentation. Level variation had only marginal effects on performance. In addition, detection thresholds were obtained using bands of noise with equal energy across intervals. Neither increasing nor decreasing the variance of the noise-alone and tone-plus-noise energy difference distributions altered the detectability of a tone added to noise. Thus, the changes in energy that are concomitant with the addition of the tone are not the sole cue for the detection of the tone. In a second experiment, three psychometric functions were measured. One function was determined using no level variation, one was measured in the presence of level variation, and one was measured in the context of level variation, but for trials without level variation. The context of level variation slightly reduced detectability. In a third experiment, we compared detectability in three conditions: no level variation, across-trial level variation, and across-interval level variation. The thresholds obtained in the absence of level variation were superior to those measured in the presence of level variation, regardless of the manner in which the level variation was incorporated.     

Party Pooper or Life of the Party: Dampening and Enhancing of Positive Affect in a Peer Context

Dampening and enhancing responses to positive affect have been linked to depressive symptoms. The main aim of the present study was to examine such responses in an interpersonal peer context and to examine their relation with depressive symptoms. A community sample of 665 seventh-graders (52.0% girls, Mage = 12.7 years) took part in the study. Using a newly developed questionnaire, the Co-Dampening and Co-Enhancing Questionnaire (CoDEQ), a two-factor model distinguishing co-dampening and co-enhancing was validated. Relations with general depressive symptoms, anhedonic symptoms, and friendship quality were investigated. The direction of relations was examined over a 1-year interval using cross-lagged analyses. Cross-sectional results revealed that higher levels of co-dampening and lower levels of co-enhancing were associated with more depressive and anhedonic symptoms, while controlling for co-rumination levels. For anhedonic symptoms, this pattern also held over and above intrapersonal dampening and enhancing. Friendship quality was related to higher concurrent levels of co-enhancing and lower levels of co-dampening. The longitudinal results pointed towards a scar model, in that both depressive and anhedonic symptoms predicted relative increases in co-dampening over time; however, this did not hold in a model in which dampening and enhancing were included as control variables.