Consciousness: a neurological perspective

Consciousness is a state so essentially entwined with human experience, yet so difficult to conceptually define and measure. In this article, we explore how a bidimensional model of consciousness involving both level of arousal and subjective awareness of the contents of consciousness can be used to differentiate a range of healthy and altered conscious states. These include the different sleep stages of healthy individuals and the altered states of consciousness associated with neurological conditions such as epilepsy, vegetative state and coma. In particular, we discuss how arousal and awareness are positively correlated in normal physiological states with the exception of REM sleep, while a disturbance in this relationship is characteristic of vegetative state, minimally conscious state, complex partial seizures and sleepwalking.     

Making sense of recommendations

Computer algorithms are increasingly being used to predict people's preferences and make recommendations. Although people frequently encounter these algorithms because they are cheap to scale, we do not know how they compare to human judgment. Here, we compare computer recommender systems to human recommenders in a domain that affords humans many advantages: predicting which jokes people will find funny. We find that recommender systems outperform humans, whether strangers, friends, or family. Yet people are averse to relying on these recommender systems. This aversion partly stems from the fact that people believe the human recommendation process is easier to understand. It is not enough for recommender systems to be accurate, they must also be understood.     

AN INTERDISCIPLINARY FRAMEWORK FOR ISLAMIC COGNITIVE THEORIES

The Islamic psychology (IP) community in Europe has recently witnessed a heated debate about the credentials required to participate in the theoretical substantiation of IP and Islamically integrated psychotherapy and counseling. This debate has provided convenient circumstances for Muslim psychologists and Islamic scholars alike to rethink their roles within the flourishing movement. Specifically, the discussions hint toward the importance of adopting a collaborative research methodology for IP, in particular for basic research. The methodology of choice will need to define the necessary qualifications and responsibilities of scholars and psychologists in a collaborative research process (personal collaboration) and evince its capability to appropriately marry knowledge and data, diverging research methods, and perspectives, concepts, and theories from Islamic studies and contemporary psychology (content‐related collaboration). Here, we devise and offer a case illustration of an Islamic Psychology Basic Research Framework (coined the SALAAM Framework). This framework uses the Institute for Interdisciplinary Studies (IIS) Model of Interdisciplinary Research, developed by the IIS at the University of Amsterdam. Our first aim is to appropriate the IIS model for the IP literature by applying the model's research process phases and technique for the integration of disparate bodies of knowledge—that is, the identification of common ground—to methodological approaches in the contemporary IP literature. Our second aim is to exemplify the devised SALAAM Framework using the relatively unexplored area of Islamic cognitive theories (ICTs), which remain underdeveloped in contemporary psychological literature, primarily because of a lack of commensurability with the nomenclature of contemporary psychology. We thus provide a primer on the potential scope of ICTs. Toward the end of this article, we discuss the potential of the project of interdisciplinary construction of Islamic psychological theory, and the ability of the SALAAM Framework to establish a research program in IP that centers on cognition. We finally offer our reflections on the distinctiveness of Islamic psychologies in comparison to mainstream and Christian psychology.     

A case of camptocormia (bent spine) secondary to early motor neuron disease

Camptocormia is a gait disorder, characterized by hyperflexion of thoracolumbar spine which increases on walking, and disappears in the supine position. A 48 year-old man developed progressive gait deterioration for one year and slight weakness and tremor of both hands for five months. It eventually became apparent that the patient had motor neuron disease, as well as symptoms of extrapyramidal disorder.     

Promoting us or preventing them: regulatory focus and manifestations of intergroup bias

Four studies examined whether situational and individual differences in individuals' regulatory focus influence how intergroup bias is expressed emotionally and behaviorally. Consistent with past findings on promotion focus, these studies found evidence that participants' promotion focus, whether measured or manipulated, was related to how extensively they demonstrated bias toward their ingroup in terms of cheerfulness- and dejection-related emotions and approach-related behaviors. Consistent with past findings on prevention focus, these studies also revealed that participants' prevention focus was related to how extensively they showed bias against an outgroup in terms of quiescence- and agitation-related emotions and avoidance-related behaviors. The implications for the self-regulatory functions of intergroup bias are discussed.     

Perceptual integration of timing and intensity variations in the perception of musical accents

The author investigated the detection of timing and intensity variations in tone sequences within the framework of perceptual independence or integration. The participants listened to sequences of tones that contained variations in timing, intensity, or both. Each participant tried to detect variations in the dimension that was declared relevant, which was either timing or intensity. The irrelevant dimension was held constant, or varied in a manner uncorrelated with the relevant dimension, or varied in a correlated manner. When the variations in the 2 dimensions were correlated, the correlation could be either positive (i.e., timing and intensity created accents in the same sequences) or negative (i.e., timing and intensity created accents in different sequences). Uncorrelated variation in the irrelevant dimension interfered with the detection of variations in the relevant dimension. In the case of a positive correlation between the 2 dimensions, the detection of variations was better than it was with the absence of variation in the irrelevant dimension only for participants who attended to timing. In the case of a negative correlation, the effect was the opposite. The results showed that timing and intensity accents were not processed by completely independent channels. Rather, information from the 2 dimensions combined at a late stage of processing.     

Improvement of arithmetic self concept through combined positive reinforcement, peer interaction, and sequential curriculum

This study investigated the development of arithmetic self concept and achievement among seven- to nine-year-old children who had problems or who were at the bottom of the lowest track of a third grade. Ss were two girls and two boys from a class of 24 low track children, who completed a one-dimensional five-point scale for self concept and were administered 20-item tests for achivement in arithmetic repeatedly throughout eight weeks of instruction. Formation of small groups, peer interaction, individual curriculum adjustment, and positive reinforcement both at individual and group level were applied. Effective, correlated results were recorded along both scales for each child, and the gains for the four target children were shown in comparison to the class as a whole.     

To "do the right thing" or to "just do it": locomotion and assessment as distinct self-regulatory imperatives

An integrated series of studies investigated 2 functional dimensions of self-regulation referred to as assessment and locomotion (E. T. Higgins and A. W. Kruglanski, 1995). Assessment constitutes the comparative aspect of self-regulation that critically evaluates alternative goals or means to decide which are best to pursue and appraises performance. Locomotion constitutes the aspect of self-regulation concerned with movement from state to state, including commitment of psychological resources to initiate and maintain such movement. Two separate scales were developed to measure individual differences in these tendencies. Psychometric work attested to the scales' unidimensionality, internal consistency, and temporal stability. The authors found that (a) locomotion and assessment are relatively independent of each other, (b) both are needed for self-regulatory success, and (c) each relates to distinct task orientations and motivational emphases.     

Effects of accenting and regularity on the detection of temporal deviations: does regularity facilitate performance?

In an experiment on the effect of intensity accents on the perception of time intervals between tones, H. G. Tekman (2001) found that the regular placement of deviant time intervals in short sequences of tones reduced detection, especially if intensity accents marked the deviant time intervals. That was the opposite of what one would have expected on the basis of the dynamic attending theory of M. R. Jones (1976). The effect might have occurred because temporally deviant tones create cumulative onset shifts that affect all the subsequent tones. If the deviations were randomly placed, then they could follow each other in close succession and change the local tempo. In the present study, the changes of local tempo, which might have acted as a cue for the detection of temporal deviations in the random sequences, were eliminated by compensating for deviant time intervals with equal deviations in the opposite direction in the interval that followed. That change in the stimuli eliminated the negative main effect of regularity, and the accenting interacted with regularity in favor of detection in the regular sequences. However, a simple advantage of regular over random sequences was not observed. The author discusses possible reasons for the lack of a facilitatory effect of regularity.     

Should children decide whether they are enrolled in nonbeneficial research?

The U.S. federal regulations require investigators conducting nonbeneficial research to obtain the assent of children who are capable of providing it. Unfortunately, there has been no analysis of which children are capable of assent or even what abilities ground the capacity to give assent. Why should investigators be required to obtain the positive agreement of some children, but not others, before enrolling them in research that does not offer a compensating potential for direct benefit? We argue that the scope of children's research decision making should be based on the principles of respect for autonomy and nonmaleficence. These principles imply that the threshold for assent should be fixed at 14 years of age, and a dissent requirement should be adopted for all children in the context of nonbeneficial research.