Cognition

This study explored how domestic cats perform in a horizontal string-pulling task to determine whether they understand this case of physical causality. Fifteen cats were tested on their ability to retrieve an unreachable food treat in three different set-ups: (a) a single baited string, (b) two parallel strings where only one was baited and (c) two crossed strings where only one was baited. All cats succeeded at pulling a single string to obtain a treat, but none consistently chose the correct string when two strings were parallel. When tested with two crossed strings one cat chose the wrong string consistently and all others performed at chance level. There was no evidence that cats understand the function of the strings or their physical causality.

Much research in the last two decades has demonstrated that human responses deviate from the performance deemed normative according to various models of decision making and rational judgment (e.g., the basic axioms of utility theory). This gap between the normative and the descriptive can be interpreted as indicating systematic irrationalities in human cognition. However, four alternative interpretations preserve the assumption that human behavior and cognition is largely rational. These posit that the gap is due to (1) performance errors, (2) computational limitations, (3) the wrong norm being applied by the experimenter, and (4) a different construal of the task by the subject. In the debates about the viability of these alternative explanations, attention has been focused too narrowly on the modal response. In a series of experiments involving most of the classic tasks in the heuristics and biases literature, we have examined the implications of individual differences in performa...

The two contrasting theoretical approaches to visual perception, the constructivist and the ecological, are briefly presented and illustrated through their analyses of space and size perception. Earlier calls for their reconciliation and unification are reviewed. Neurophysiological, neuropsychological, and psychophysical evidence for the existence of two quite distinct visual systems, the ventral and the dorsal, is presented. These two perceptual systems differ in their functions; the ventral system's central function is that of identification, while the dorsal system is mainly engaged in the visual control of motor behavior. The strong parallels between the ecological approach and the functioning of the dorsal system, and between the constructivist approach and the functioning of the ventral system are noted. It is also shown that the experimental paradigms used by the proponents of these two approaches match the functions of the respective visual systems. A dual-process approa...

Chronic pain conditions are complicated and challenging to live with. Capacity to adjust to such conditions may depend on the ability to self-regulate, that is, the ability to alter thoughts, feelings, and behaviors. Self-regulation appears to rely on executive cognitive functions, and the current review, therefore, sought to draw attention to the impact of self-regulatory capacity and executive functions on chronic pain. Chronic pain conditions present with complex interactions of cognitive, emotional, behavioral, and physiological components for which self-regulatory ability is crucial. The ability to self-regulate varies, and self-regulatory strength appears to be a limited resource that can be fatigued. The many challenges of chronic pain conditions could, therefore, tax self-regulatory strength, leading to self-regulatory deficits. The current review proposes a relationship among pain, self-regulatory capacity, self-regulatory demands, executive functions, and self-regulatory fatigue, suggesting that executive functions and self-regulatory deficits are indeed part of the etiology and maintenance of chronic pain conditions.

This paper addresses the broad question of how work in sociolinguistics should be related to social theory, and in particular the assumptions about cognition that can underpin that relation. A discursive psychological approach to issues of cognition is pressed and illustrated by a reworking of Stubb's review of work on language and cognition. A discursive psychological approach is offered to the topics of racist discourse, courtroom interaction, scientific writing, and sexism. Discursive psychology rejects the approach to 'cognition' as a collection of more or less stable inner entities and processes. Instead the focus is on the way 'mental phenomena' are both constructed and oriented to in people's practices.

This study examines the relationship between a computerized neuropsychological assessment battery, the Automated Neuropsychological Assessment Metrics (ANAM) and a widely used ability measure, Woodcock-Johnson III Tests of Cognitive Ability (WJ-III). Results indicated substantial relationship between the ANAM throughput (accuracy/response time) scores and the WJ-III Cognitive Efficiency cluster. An unexpectedly strong relationship was evident between accuracy scores on the ANAM Logical Reasoning scale and the WJ-III General Intellectual Ability score, purporting to measure the g factor. The findings support the viability of the ANAM as a time- and cost-effective tool for appraisal of cognitive function.

As hundreds of so-called "psychotherapies" have been foisted onto the public, all claiming to treat "mental illness," newer understandings of how the human brain actually works and the processes which drive the formations of mentation that we refer to as "the mind," demand a reassessment of what exactly we are referring to by the term "mental illness" and what kinds of intervention would be feasible in both the prevention of and recovery from cognitive and behavioral disorder. A fundamental process in the formation of an individual's mentation is the associations of experience. These associations not only account for constructive behavior, but can also lead to deleterious or negative behavior, suggesting that some associations are negative and therefore the negative behavior can be remolded through contrasting positive associations; however, to understand what this really means and how it works, we must start at the beginning and define what exactly is this negative behavior that we refer to by the term "mental illness." One of the most important axioms of life so simply but profoundly phrased by Oscar Wilde, is that "the truth is rarely pure and NEVER simple" (emphasis mine). Nothing can ever be explained by simple sound bites – oversimplification is just another word for misrepresentation – so to understand, we must truly engage the subject, and to engage the subject, we must first and foremost clearly define what it is that we are seeking to understand. In this case, it demands that we understand what exactly is mental illness.

Methylphenidate (MPH), a stimulant drug with dopamine and noradrenaline reuptake inhibition properties, is mainly prescribed in attention deficit hyperactivity disorder, is increasingly used by the general population, intending to enhance their cognitive function. In this literature review, we aim to answer whether this is effective. We present a novel way to determine the extent to which MPH enhances cognitive performance in a certain domain. Namely, we quantify this by a percentage that reflects the number of studies showing performance enhancing effects of MPH. To evaluate whether the dose-response relationship follows an inverted-U-shaped curve, MPH effects on cognition are also quantified for low, medium and high doses, respectively. The studies reviewed here show that single doses of MPH improve cognitive performance in the healthy population in the domains of working memory (65% of included studies) and speed of processing (48%), and to a lesser extent may also improve verbal...

The role of morphology in reading aloud was examined measuring naming latencies to pseudowords and words composed of morphemes (roots and derivational suffixes) and corresponding simple pseudowords and words. Three groups of Italian children of different ages and reading abilities, including dyslexic children, as well as one group of adult readers participated in the study. All four groups read faster