Knowledge and Other Norms for Assertion,Action, and Belief: A Teleological Account

Here I advance a unified account of the structure of the epistemic normativity of assertion, action, and belief. According to my Teleological Account , all of these are epistemically successful just in case they fulfill the primary aim of knowledgeability, an aim which in turn generates a host of secondary epistemic norms. The central features of the Teleological Account are these: it is compact in its reliance on a single central explanatory posit, knowledge‐centered in its insistence that knowledge sets the fundamental epistemic norm, and yet fiercely pluralistic in its acknowledgment of the legitimacy and value of a rich range of epistemic norms distinct from knowledge. Largely in virtue of this pluralist character, I argue, the Teleological Account is far superior to extant knowledge‐centered accounts.     

Cognitive enhancement by drugs in health and disease

Attempts to improve cognitive function in patients with brain disorders have become the focus of intensive research efforts. A recent emerging trend is the use of so-called cognitive enhancers by healthy individuals. Here, we consider some of the effects - positive and negative - that current drugs have in neurological conditions and healthy people. We conclude that, to date, experimental and clinical studies have demonstrated relatively modest overall effects, most probably because of substantial variability in response both across and within individuals. We discuss biological factors that might account for such variability and highlight the need to improve testing methods and to extend our understanding of how drugs modulate specific cognitive processes at the systems or network level.     

Achievement Motivation and Adjustment in Members of Indian Scientific Expedition to Antarctica

Twenty-six members are selected to be a part of Indian Scientific Expedition for stay in Antarctica for 16 months in physically challenging, harsh yet adventurous and socially restricted environment. The study highlights the centrality of the need for achievement which influences adjustment of expedition members to harsh climatic conditions. Achievement motivation was assessed in a sample of Indian male expedition members (n=248) in the age group of 22 to 56 years on semi-structured Performa, Sack’s sentence completion test, Multidimensional Personality Inventory and interviews from 1998 to 2008. Results revealed that positive personality characteristics such as high enthusiasm, adaptability, optimistic future orientation and determination and need for achievement, success, high status and monetary compensation influence adjustment and for joining Indian expedition teams motivate people.     

Importance of considering testosterone-cortisol interactions in predicting human aggression and dominance

A novel "field" study recently published in Aggressive Behavior found that individual differences in baseline testosterone concentrations were positively correlated with endorsement of political aggression and that baseline cortisol concentrations were negatively correlated with self-reported aggression among Palestinian boys living in Gaza. Here, we discuss recent evidence indicating that testosterone and cortisol interact to predict competitive, aggressive, and dominant behaviors and urge researchers collecting both hormones to perform and report analyses that formally test for such interaction effects.     

A systematic review of internet-delivered cognitive behavior therapy for alcohol misuse: study characteristics,program content and outcomes

ABSTRACT

Alcohol misuse is a common, disabling and costly issue worldwide. Internet-delivered cognitive behavior therapy (ICBT) has the potential to reduce the harms of alcohol misuse, particularly for individuals who are unable or unwilling to access face-to-face therapy. A systematic review was conducted using Medline, CINAHL, EMBASE and PsycINFO databases for all relevant articles published from 1980 to January 2019. Randomized controlled trials (RCTs) were included if (i) an ICBT intervention targeting alcohol misuse was delivered; (ii) participants were aged 18 years or older; and (iii) primary outcomes were quantity of drinking. A qualitative analysis was conducted on the content of the ICBT programs. Fourteen studies met inclusion criteria. Most studies included participants from the general population, while studies conducted within clinic settings with diagnosed individuals were rare. The programs were similar in terms of included modules. Small effects were seen in studies on self-guided ICBT, while therapist-guided ICBT rendered small to large effects. The current review indicates that ICBT has a significant effect in reducing alcohol consumption. Larger studies evaluating ICBT compared to active control groups especially within clinic settings are warranted.     

Exploring Subjective Representationalism

Representationalism is, roughly, the view that experiencing is to be analyzed wholly in terms of representing. But what sorts of properties are represented in experience? According to a prominent form of representationalism, objective representationalism, experiences represent only objective (i.e. suitably mind‐independent) properties. I explore subjective representationalism, the view that experiences represent at least some subjective (i.e. suitably mind‐dependent) properties. Subjective representationalists, but not objective representationalists, can accommodate cases of illusion‐free phenomenal inversion. Moreover, subjective representationalism captures the so‐called transparency of experience, as it is standardly articulated, just as well as objective representationalism.     

Learned irrelevance and retrospective correlation learning

In 1973 Mackintosh reported an interference effect that he called learned irrelevance in which exposure to uncorrelated (CS/US) presentation of the unconditional stimulus (US) and the conditioned stimulus (CS) interfered with future Pavlovian conditioning. It has been argued that there is no specific interference effect in learned irrelevance; rather the interference is the sum of independent CS and US exposure effects (CS + US). We review previous research on this question and report two new experiments. We conclude that learned irrelevance is a consequence of a contingency learning and a specific learned irrelevance mechanism. Moreover even the “independent exposure controls”, used in previous experiments to support the CS and US exposure account, provide support for the correlation learning process.