Self-Awareness without a Self: Buddhism and the Reflexivity of Awareness

In this paper, I show that a robust, reflexivist account of self-awareness (such as was defended by Dignāga and Dharmakīrti, most phenomenologists, and others) is compatible with reductionist view of persons, and hence with a rejection of the existence of a substantial, separate self. My main focus is on the tension between Buddhist reflexivism and the central Buddhist doctrine of no-self. In the first section of the paper, I give a brief sketch of reflexivist accounts of self-awareness, using the Buddhist philosopher Dharmakīrti as my example. In the next section, I examine reductionism as it relates to accounts of the self. I then, in the third section, argue that a reductionist account of persons can account for the unique features of first-person contents and our deep and multi-layered sense of self.     

Methods in the study of motor programming: is it just a matter of simple vs. choice reaction time? A comment on Klapp et al. (1979)

A recent article (Klapp, Abbott, Coffman, Greim, Snider, and Young, 1979) has concluded that central time demands of motor programming can only be determined by choice reaction time methodology. A critique of the theoretical position and results of this study is made showing that this conclusion is unwarranted. We go on to suggest that the simple vs. choice reaction time controversy might only be clouding a more basic issue in motor programming research; viz., identification of relevant internal response variables. Finally, a case is made for the notion that the choice reaction time paradigm may produce response competition (interference) effects and as a result confound measures presumed to reflect only the processes involved in the organization of movement.     

Manual localization of lateralized visual targets

The effects of visual field, responding limb and extrapersonal space on the ability to localize visual targets using slow positioning movements of the arm were examined. Special contact lenses were used to lateralize visual information and to make comparisons with localization under monocular control conditions. Subjects made slow positioning movements to place a cursor directly beneath target lights. They saw target lights but not the moving limb during the trial. For directional error, results indicated that subjects were more accurate localizing targets lateralized to the right hemisphere than targets lateralized to the left hemisphere, indicating right hemisphere superiority for localization of visual targets in grasping space. Localization performance was significantly better with the right hand than the left hand. the left hand demonstrated a directional bias to the right of the targets. Responding hand and visual field did not interact. Finally, contrary to subjects' awareness and verbal reports, target localization was not less accurate in lens than in monocular control conditions. This was true for both amplitude and directional error. This is consistent with other studies where visual information about limb position is not available.     

A conceptual framework for understanding self-regulation in adults

Multiple models of self-regulation have been posited, yet despite the apparent overlap between them, there is no common theoretical framework to unite the many theories. Authors in the area of self-regulation research have noted the lack of cross-field communication due to the absence of a conceptual framework and of common terms to describe self-regulatory processes ( [Bandura, 2005], [Boekaerts et?al., 2005] and [Karoly et?al., 2005]). The objective of the current review is to propose a common lexicon and a comprehensive model to integrate and organize the extant self-regulation research, thereby facilitating the understanding of self-regulation. The proposed model revisits classic cybernetic theory (Wiener, 1948), and is composed of a reference, input, comparator, and output. Each of these components is represented in current self-regulation theory, and is discussed as it relates to self-regulation models and ongoing empirical research.     

The Effects of Object Weight on the Kinematics of Prehension

The purpose of these experiments was to determine the effects of object weight and condition of weight presentation on the kinematics of human prehension. Subjects performed reaching and grasping movements to metal dowels whose visible characteristics were similar but whose weight varied (20, 55, 150, 410 g). Movements were performed under two conditions of weight presentation, random (weight unknown) and blocked (weight known). Three-dimensional movements of the thumb, index finger, and wrist were recorded, using a WATSMART system to obtain information regarding the grasp and transport components. The results of the first experiment indicated that object weight and condition of presentation affected the temporal and kinematic measures for both the grasp and transport components. In conjunction with the results of a second experiment, in which time in contact with the dowel was measured, it was shown that the free-motion phase of prehension (i.e., up to object contact) was invariant over the different conditions, however. The changes were observed in the finger-object interaction phase (when subjects applied forces after contact with the dowel), prior to lift-off. These results were interpreted as indicating (a) object weight does not influence the planning and execution of the free-motion phase of prehension and (b) there are at least two motor control phases involved in prehension, one for making contact with the object and the other for finger-object interaction. The changing contributions of visual, kinesthetic, and haptic information during these two phases is discussed.     

Evidence for cerebral asymmetries in a finger sequencing task

Visual input was lateralized using a specially designed contact lens system. Subjects performed a sequence of two keypresses in response to a light stimulus with either the left or the right hand in a choice reaction time paradigm. Two choice reaction time conditions were used: (A) hand certainty, sequence uncertainty and (B) hand uncertainty, sequence certainty. Reaction time (RT) results indicate that there are no significant differences between the left and right hemisphere in selecting a sequential response in either of the two conditions. Interfinger time (IFT) results show a relative left eye (right hemisphere)-left hand advantage when there was hand certainty, sequence uncertainty and a relative left eye (right hemisphere) disadvantage for both hands when there was hand uncertainty, sequence certainty. The RT results do not support the concept of a center in the left hemisphere for selection of the components of a two-element sequential keypress, prior to movement initiation. However, the IFT results indicate that there are differences in the processing ability of the left and right hemispheres in a sequencing task, after movement initiation.     

Rumination and distraction periods immediately following a speech task: effect on postevent processing in social anxiety

The purpose of this study was to investigate social anxiety and the effect of rumination and distraction periods immediately following a speech task on subsequent postevent processing. A secondary aim was to examine the content of postevent rumination. Participants (N = 114 students) completed measures of social anxiety and depression, delivered a 3-minute speech, and were randomly assigned to complete (1) a rumination form about the speech (guided negative rumination condition) or (2) an anagram form (distraction condition). One week later participants completed measures of postevent processing related to the speech task. It was hypothesized that social anxiety would interact with condition in predicting levels of postevent processing. This hypothesis was supported in the prediction of positive thoughts such that at high levels of social anxiety the distraction condition led to more positive thoughts compared with the guided negative rumination condition, whereas at low levels of social anxiety conditions were similar with respect to positive thoughts. Irrespective of condition, both social anxiety and depression predicted greater postevent rumination and negative thoughts 1 week later. With respect to the content of postevent rumination, socially anxious individuals reported being more concerned about some aspects of the presentation (e.g. poor posture), whereas other concerns were equally noted regardless of social anxiety level (e.g. poor content). The present results highlight the potential clinical utility of distracting from social anxiety to allow for greater access to positive thoughts postevent.     

Darwinism and positivism as methodological influences on the development of psychology

The methodological significance of evolutionary theory for psychology may be distinguished from its substantive or theoretical significance. The methodological significance was that evolutionary theory broadened the current conceptions of scientific method and rendered them relatively independent of physics. It thereby made the application of the “scientific method” to psychology much more feasible than it had been previously, and thus established the possibility of a wide-ranging scientific psychology for the first time. The methodological eclecticism that made scientific psychology possible did not, however, remain a feature of psychology for very long. Psychology's methodology rapidly became restricted and codified through the influence of, and in imitation of, the rigorously positivistic orientation of physics around the turn of the twentieth century.