Nagarjuna’s no-thesis view revisited: the significance of classical Indian debate culture on verse 29 of the Vigrahavyāvartanī

The aim of this essay is to clarify Nāgārjuna’s use of the term pratijñā (thesis) in verse 29 of the Vigrahavyāvartanī (VV) as situated in its contemporaneous thriving debate culture. In contrast to the standard formulation, which interprets the term pratijñā as a reference to the thesis of ?ūnyatā (emptiness) proffered by Nāgārjuna in the Mūlamadhyamakakārikā, an examination of the debate culture in, and leading up to, second-century CE India shows that the term pratijñā refers to the first of five steps within the Nyaya five-membered syllogism as it functions within a vita??ā form of debate. Through an examination of the context in which this verse was written, the association made between Nāgārjuna’s use of pratijñā in the VV and ?ūnyatā within other texts becomes dislodged, thereby demonstrating the inadequacy of the standard formulation and the need for a revised understanding of the intent of the VV.     

A Systematic Review of the Psychometric Properties of Trait Cognitive Self-Report Measures in Social Anxiety

Cognitive factors, including beliefs, thoughts and assumptions have been found to play an important role in the development and maintenance of Social Anxiety Disorder. Trait cognitive self-report measures of social anxiety are widely used in research and clinical settings. It is imperative that only measures with good psychometric properties are used in order to interpret assessment scores accurately, and to make valid and reliable conclusions. The present systematic review evaluated the psychometric properties of trait cognitive self-report measures of social anxiety. Relevant studies were identified via a comprehensive and systematic search of academic databases. The reported psychometric properties of included studies were analysed by applying an appraisal of adequacy tool developed by Terwee et al. (2007). Of the 3091 studies identified, 50 studies met the inclusion criteria, and they included 21 measures. Included studies demonstrated that a number of measures had some adequate psychometric properties, however, no measure fulfilled criteria for all psychometric properties according to the appraisal tool. Findings highlight the need to further establish the psychometric properties of cognitive self-report measures of social anxiety in clinical and research settings through additional empirical studies.     

Husserl on Perception: A Nonrepresentationalism That Nearly Was

There is a longstanding debate among Husserl scholars about whether Husserl thinks perception involves mental representation. The debate, I believe, has not been settled. I deny that the existentialist‐inspired charge of representationalism about perception in Husserl is precise enough to stick. Given a clearer understanding of just what mental representation amounts to, I contend that those who defend Husserl against the accusation of representationalism fare little better than Husserl's existentialist‐leaning critics. I argue that he is in fact a representationalist about perception insofar as it involves a noematic sense. Nevertheless, Husserl opens up the possibility for a representation‐free form of perceiving in certain later discussions of the matter in which he suggests that some perceptual states lack noematic sense. What they lack in noematic sense is compensated for by other means, namely, by two sorts of affect and their functional interrelation with abilities for bodily movement. The texts that entertain this possibility, though, severely limit the scope of its actual occurrence. Husserl never commits to a generally or substantially nonrepresentational view of perception. I attempt to sketch out, however, what this nonrepresentationalism about perception that Husserl nearly landed on might look like, rearranging various more or less familiar elements already present in his theory of perception to that end.     

Computational cognitive modeling of the temporal dynamics of fatigue from sleep loss

Computational models have become common tools in psychology. They provide quantitative instantiations of theories that seek to explain the functioning of the human mind. In this paper, we focus on identifying deep theoretical similarities between two very different models. Both models are concerned with how fatigue from sleep loss impacts cognitive processing. The first is based on the diffusion model and posits that fatigue decreases the drift rate of the diffusion process. The second is based on the Adaptive Control of Thought – Rational (ACT-R) cognitive architecture and posits that fatigue decreases the utility of candidate actions leading to microlapses in cognitive processing. A biomathematical model of fatigue is used to control drift rate in the first account and utility in the second. We investigated the predicted response time distributions of these two integrated computational cognitive models for performance on a psychomotor vigilance test under conditions of total sleep deprivation, simulated shift work, and sustained sleep restriction. The models generated equivalent predictions of response time distributions with excellent goodness-of-fit to the human data. More importantly, although the accounts involve different modeling approaches and levels of abstraction, they represent the effects of fatigue in a functionally equivalent way: in both, fatigue decreases the signal-to-noise ratio in decision processes and decreases response inhibition. This convergence suggests that sleep loss impairs psychomotor vigilance performance through degradation of the quality of cognitive processing, which provides a foundation for systematic investigation of the effects of sleep loss on other aspects of cognition. Our findings illustrate the value of treating different modeling formalisms as vehicles for discovery.     

Multimedia Field Test Thinking About Exposures? There’s an App for That!

Anxiety Coach is a smartphone application (“app”) for iOS devices that is billed as a self-help program for anxiety in youth and adults. The app is currently available in the iTunes store for a one-time fee of $4.99. Anxiety Coach is organized around three related content areas: (a) self-monitoring of anxiety symptoms, (b) learning about anxiety and its treatment, and (c) guiding users through the development of a fear hierarchy and completion of exposure tasks. Although the app includes psychoeducation about anxiety as well as information regarding specific skills individuals can use to cope with anxiety (e.g., cognitive restructuring), the primary focus of the app is on exposure tasks. As such, the app includes a large library of potential exposure tasks that are relevant to treating common fears and worries, making Anxiety Coach useful to clients and clinicians alike. Additionally, Anxiety Coach prompts users to provide fear ratings while they are carrying out an exposure task and displays a message instructing users to stop the exposure once fear ratings drop by half. These features work together to create an app that has the potential to greatly increase the reach of exposure-based cognitive behavioral therapy for anxiety.     

Achieving Population-Level Change Through a System-Contextual Approach to Supporting Competent Parenting

The quality of parenting children receive affects a diverse range of child and youth outcomes. Addressing the quality of parenting on a broad scale is a critical part of producing a more nurturing society. To achieve a meaningful population-level reduction in the prevalence rates of child maltreatment and social and emotional problems that are directly or indirectly influenced by parenting practices requires the adoption of a broad ecological perspective in supporting families to raise children. We make the case for adopting a multilevel, whole of population approach to enhance competent parenting and describe the essential tasks that must be accomplished for the approach to be successful and its effects measurable. We describe how a theoretically integrated system of parenting support based on social learning and cognitive behavioral principles can be further strengthened when the broader community supports parental participation. Implications for policy and practice are discussed.     

Spatial knowledge during skilled action sequencing: Hierarchical versus nonhierarchical representations

Typists can type 4 to 5 keystrokes per second at around 95% accuracy, yet they appear to have poor declarative knowledge of key locations. Logan and Crump (2011, Psychology of Learning and Motivation, Vol. 54, pp. 1–27) accounted for this paradox by proposing that typing is hierarchically organized into two loops, with an outer loop that transforms sentences into words and passes each word, one at a time, to an inner loop that transforms each word into its constituent keystrokes; however, the nature of the inner loop’s spatial knowledge is not well understood. Key locations may be learned through the experiences of locating and traversing between keys. In daily life, people tend to type structured language, and, as a consequence, certain keys and key-to-key transitions are experienced more frequently than others. Here, we asked whether or not this knowledge is structured hierarchically. For example, knowledge of key locations may be nested within representations of words, or the inner loop may rely on knowledge that is independent from higher level structures. To test this, we had people type English, English-like, and random strings during normal, partially occluded, and occluded typing. In both partially occluded and occluded typing, error rates were higher while typing random strings compared to English and English-like strings, whereas there was no difference in error rates between English and English-like strings. This suggests that typists’ spatial knowledge of the keyboard is not driven by hierarchical word-level representations, but instead is likely driven by a collection of individual processes, such as knowledge of the sequential structure of language acquired by typing more frequently occurring letters.     

Evidence for an emotion-cognition interaction in the statistical prediction of suicide attempts

Suicidal behavior is a prevalent problem among adolescents and young adults. Although most theoretical models of suicide suggest that this behavior results from the interaction of different risk factors, most prior studies have tested only bivariate associations between individual risk factors and suicidal behaviors. The current study was designed to address this limitation by testing the effect of an emotion–cognition interaction on suicide attempts among youth. Specifically, we hypothesized that the interaction of emotion reactivity and problem-solving skills would statistically predict the probability of a recent suicide attempt among 87 adolescents and young adults. Results revealed a significant interaction, such that emotion reactivity was strongly associated with the probability of a suicide attempt among those with poor problem-solving skills, moderately associated among those with average problem-solving skills, and not significantly associated among those with good problem-solving skills. The next generation of studies on suicidal behavior should continue to examine how risk factors interact to predict this dangerous outcome.     

The impact of cognitive behavioral therapy on post event processing among those with social anxiety disorder

Individuals with social anxiety are prone to engage in post event processing (PEP), a post mortem review of a social interaction that focuses on negative elements. The extent that PEP is impacted by cognitive behavioral therapy (CBT) and the relation between PEP and change during treatment has yet to be evaluated in a controlled study. The current study used multilevel modeling to determine if PEP decreased as a result of treatment and if PEP limits treatment response for two types of cognitive behavioral treatments, a group-based cognitive behavioral intervention and individually based virtual reality exposure. These hypotheses were evaluated using 91 participants diagnosed with social anxiety disorder. The findings suggested that PEP decreased as a result of treatment, and that social anxiety symptoms for individuals reporting greater levels of PEP improved at a slower rate than those with lower levels of PEP. Further research is needed to understand why PEP attenuates response to treatment.     

Short-term memory stages in sign vs. speech: the source of the serial span discrepancy

Speakers generally outperform signers when asked to recall a list of unrelated verbal items. This phenomenon is well established, but its source has remained unclear. In this study, we evaluate the relative contribution of the three main processing stages of short-term memory – perception, encoding, and recall – in this effect. The present study factorially manipulates whether American Sign Language (ASL) or English is used for perception, memory encoding, and recall in hearing ASL-English bilinguals. Results indicate that using ASL during both perception and encoding contributes to the serial span discrepancy. Interestingly, performing recall in ASL slightly increased span, ruling out the view that signing is in general a poor choice for short-term memory. These results suggest that despite the general equivalence of sign and speech in other memory domains, speech-based representations are better suited for the specific task of perception and memory encoding of a series of unrelated verbal items in serial order through the phonological loop. This work suggests that interpretation of performance on serial recall tasks in English may not translate straightforwardly to serial tasks in sign language.