Lessons for Dynamic Touch From a Case of Stroke-Induced Motor Impairment

LW, an individual with a stroke-related motor impairment, was asked to perceive the lengths of rods of different mass distributions by dynamic touch. His impairment dictated that wielding was primarily about the shoulder rather than the wrist. Although perceived rod lengths were in the range of actual rod lengths, scaling to the objects' mass moments was atypical for both the affected and unaffected limbs. A group of healthy young adults asked to mimic his wielding style yielded the same atypical scaling. The typical scaling was restored when LW's wielding was fixed about a mechanical axis. Discussion considered what frame of reference is suitable for revealing an object's mass moments relevant to a given task. In particular, it appears that individuals can exploit alternative forms of interaction with environmental objects that leave invariant the parameters specifying to-be-perceived properties. Perception by dynamic touch is not a function of particular neuromuscular patterns but of information made available to the haptic system during limb-object interactions.     

Secular Declines in Spearman's g: Some Evidence from the United States

The Flynn Effect (J. Flynn, 1987) refers to the apparent increases in intelligence quotient (IQ) observed over the past few decades. A related phenomenon is that the variance in test scores accounted for by Spearman's g (C. Spearman, 1904) varies according to IQ level. That is, g accounts for less variance in high IQ groups than in low IQ groups. Spearman termed this variant aspect of g the “law of diminishing returns.” This study extends prior research on the Flynn Effect and the law of diminishing returns by examining changes in the statistical importance of Spearman's g that may accompany secular increases in IQ. Based on the standardization data from the United States versions of the Wechsler scales (i.e., Wechsler Preschool and Primary Scales of Intelligence, D. Wechsler, 1967; Wechsler Intelligence Scale for Children, D. Wechsler, 1949; Wechsler Adult Intelligence Scale, D. Wechsler, 1955), this study indicated that, in most cases, the statistical significance of Spearman's g has indeed declined over the past several years. A. R. Jensen (1998) suggested that the components of the Flynn Effect warrant special investigation. The present study addresses this issue, in part by analyzing the Verbal and Performance subscales of the Wechsler scales. Additionally, this study further confirms the law of diminishing returns as applicable to different ages and time periods.     

Astrotheology and Spaceflight: Prophecy,Transcendence and Salvation on the High Frontier

Abstract

Astrotheology explores the relationship between theology and space exploration to identify elements of religion and myth in discussions of space science and to prepare people for possible future developments. So far, the dominant focus has been the search for extraterrestrial life and intelligence. This paper broadens the discussion to include human life in outer space. Like religion, spaceflight has its prophets and evangelists, visions of utopia, transcendent experiences and promises of salvation. Spaceflight raises new questions for astrotheologians, in such areas as religious observance in space, ethics, and how spaceflight may influence traditional religions or give rise to new movements. Rather than ignoring links between religion and spaceflight, space scientists and advocates should seek to understand how religion influences human attitudes towards and activities in space.     

Altruism as Reparation of Mismatch or Disruption in the Self

ABSTRACT

After giving a brief summary of the scientific literature on altruism and empathy—a capacity necessary for altruism—I focus on a scientific paradigm, the face-to-face still face, and what insights it might offer psychoanalysts in their understanding of altruism. The face-to-face still face provides data about the communication of intentions and affect between infant and caregiver and demonstrates the procedure of mutual regulation, the foundation of self-regulation and empathy. Both infant and caregiver are highly motivated to repair mismatches or disruptions in the affective connection between them and this desire to repair disruptions can also be recognized in adulthood—both in relationships between individuals and within an individual in terms of disconnections with the self. The subjective experience of the altruist may derive from this domain of human experience—the repair of disruption. I thus suggest that altruism is not merely sublimation of inner conflict, but it is an adaptive, evolutionarily beneficial, attitude and behavior that is growth enhancing in that it expands the individual’s repertoire for repairing mismatches within the self.     

Perceiving action-relevant properties of tools through dynamic touch: effects of mass distribution, exploration style, and intention

At issue in the present series of experiments was the ability to prospectively perceive the action-relevant properties of hand-held tools by means of dynamic touch. In Experiment 1, participants judged object move-ability. In Experiment 2, participants judged how difficult an object would be to hold if held horizontally, and in Experiments 3 and 4, participants rated how fast objects could be rotated. In each experiment, the first and second moments of mass distribution of the objects were systematically varied. Manipulations of wielding speed and orientation during restricted exploration revealed perception to be constrained by (a) the moments of mass distribution of the hand-tool system, (b) the qualities of exploratory wielding movements, and (c) the intention to perceive each specific property. The results are considered in the context of the ecological theory of dynamic touch. Implications for accounts of the informational basis of dynamic touch and for the development of a theory of haptically perceiving the affordance properties of tools are discussed.     

Prospective memory: Are preparatory attentional processes necessary for a single focal cue?

The preparatory attentional and memory processes theory of prospective memory (PM) assumes that PM retrieval requires resource-demanding preparatory attentional processes, whereas the multiprocess theory assumes that retrieval can also occur spontaneously. On the basis of showing slowing on an ongoing task (i.e., task interference) —even when the PM cue was highly salient (i.e., the participant’s own name) —Smith, Hunt, McVay, and McConnell (2007) concluded that preparatory attentional processes are always necessary for PM retrieval. We argue that the presence of preparatory attentional processes cannot be used to rule out the existence of spontaneous retrieval processes, and the goal of the present research was to examine whether PM retrieval can occur in the absence of preparatory attentional processes. We varied whether we emphasized the importance of the PM task or the ongoing task, and we assessed task interference across quarters of the ongoing task. Our results showed no evidence of task interference and, hence, no evidence of preparatory attentional processes in the periods proximal to the target event, and yet participants showed high PM performance. Thus, the results suggest the existence of spontaneous retrieval processes and support the multiprocess theory.     

Billing for Medical Genetics and Genetic Counseling Services: A National Survey

In January 2007 the American Medical Association added a new Current Procedural Terminology® (CPT) code, 96040, for “Medical Genetics and Genetic Counseling Services.” In order to identify the impact of having this new code and to identify issues with implementation of the code, the National Society of Genetic Counselors (NSGC) CPT® Working Group surveyed NSGC members using an internet-based survey tool. The majority of respondents (94%) reported being aware of the new code and over half of the respondents (69%) said they were billing for genetic counseling. Approximately 24% of those billing reported using 96040. Many facilities are not using this code and the reported success of billing using 96040 is highly varied. Continued education may be beneficial to encourage reimbursement for 96040 and follow up is needed to assess the ongoing implementation and impact of the new CPT® code.     

Social Role Theory and the Perceived Gender Role Orientation of Athletes

In this research we examined the influence of athletic roles upon the perceived gender role orientations of male and female athletes. Participants were 148 students who read a bogus newspaper article that described either a male or female athlete who had successfully competed in an athletic event. The type of sport (football, basketball, and cheerleading) was manipulated. Female football players and basketball players were perceived as higher in agency than female cheerleaders. Male cheerleaders were perceived as higher in communality than male football players and male basketball players. Participants made external attributions concerning the motivations of athletes who competed in gender traditional sports. They made internal attributions concerning the motivations of athletes who competed in gender nontraditional sports. These findings are examined in relation to social role theory.