The effect of volition on the stability of bimanual coordination

The authors investigated how the intention to passively perform a behavior and the intention to persist with a behavior impact upon the spatial and temporal properties of bimanual coordination. Participants (N = 30) were asked to perform a bimanual coordination task that demanded the continuous rhythmic extension-flexion of the wrists. The frequency of movement was scaled by an auditory metronome beat from 1.5 Hz, increasing to 3.25 Hz in.25-Hz increments. The task was further defined by the requirement that the movements be performed initially in a prescribed pattern of coordination (in-phase or antiphase) while the participants assumed one of two different intentional states: stay with the prescribed pattern should it become unstable or do not intervene should the pattern begin to change. Transitions away from the initially prescribed pattern were observed only in trials conducted in the antiphase mode of coordination. The time at which the antiphase pattern of coordination became unstable was not found to be influenced by the intentional state. In addition, the do-not-intervene set led to a switch to an in-phase pattern of coordination whereas the stay set led to phase wandering. Those findings are discussed within the framework of a dynamic account of bimanual coordination.     

The complexities of complex span: explaining individual differences in working memory in children and adults

Two studies are presented that investigated the constraints underlying working memory performance in children and adults. In each case, independent measures of processing efficiency and storage capacity are assessed to determine their relative importance in predicting performance on complex span tasks,which measure working memory capacity. Results show that complex span performance was independently constrained by individual differences in domain-general processing efficiency and domain-specific storage capacity. Residual variance, which may reflect the ability to coordinate storage and processing, also predicted academic achievement. These results challenge the view that complex span taps a limited-capacity resource pool shared between processing and storage operations. Rather, they are consistent with a multiple-component model in which separate resource pools support the processing and storage functions of working memory.     

Correlates of motives for suicide

Analysis of a large sample of suicide notes from 262 suicides in Australia showed separated/divorced suicides and suicides who abused alcohol were more likely to give love/romance as a precipitant for suicide while those who used gas (natural or car exhaust) were more likely to give depression and guilt as a motive.     

Psychological type and attitude toward Christianity: a replication

A sample of 149 university students completed the Francis Psychological Type Scales together with the Francis Scale of Attitude Toward Christianity. The data indicated that university students classified as Feeling Types hold a more positive attitude toward Christianity than those classified as Thinking Types. These findings replicate the 1999 report of Jones and Francis.     

Functional imaging of 'theory of mind'

Our ability to explain and predict other people's behaviour by attributing to them independent mental states, such as beliefs and desires, is known as having a 'theory of mind'. Interest in this very human ability has engendered a growing body of evidence concerning its evolution and development and the biological basis of the mechanisms underpinning it. Functional imaging has played a key role in seeking to isolate brain regions specific to this ability. Three areas are consistently activated in association with theory of mind. These are the anterior paracingulate cortex, the superior temporal sulci and the temporal poles bilaterally. This review discusses the functional significance of each of these areas within a social cognitive network.     

Why Are We Reluctant to Sell Friendship?1

There are a number of indicators that people try to keep money out of social relationships, and a number of reasons why such separation might occur: undermining of intrinsic motivation, contamination of signals of friendship, and the apparently irrational tainting influence of money. Two experiments in which psychology students participated in brief conversations under various payment conditions found little evidence for payment adversely affecting the social interactions. A third study comparing a service group (hairdressers) that has considerable social interaction with its customers and a control group indicated that the former did not suffer any undermining of normal social motivation. Overall, the findings suggest that the separation of money from social relationships may not have a rational foundation.     

The Shooting-Room Paradox and Conditionalizing on Measurably Challenged Sets

Synthese - We provide a solution to the well-known “Shooting-Room” paradox, developed by John Leslie in connection with his Doomsday Argument. In the “Shooting-Room”...     

Effects of Interspersing Additional Brief Math Problems on Student Performance and Perception of Math Assignments: Getting Students to Prefer to Do More Work

Three experiments were conducted to assess the effects of the interspersing procedure on students' mathematics performance, perceptions of mathematics assignments, and preference for mathematics assignments when more work was added. In Experiment I, college students worked computation problems from two assignments. The control assignment contained 15 three-digit by two-digit problems (3 × 2) and the experimental assignments contained 18 3 × 2 problems and 6 additional interspersed one-digit by one-digit problems (1 × 1). Students then rated the assignments and chose one for homework. Results showed significantly more students preferred (i.e., chose it for homework) the experimental assignment with the additional target (i.e., 3 × 2) and interspersed problems. Furthermore, significantly more students rated this experiment as requiring less effort and being less difficult. Moreover, students' mathematics performance was not affected by the procedure. Experiment II strengthened the internal validity by showing that students did not prefer the experimental assignment because it contained more target problems. Experiment III showed that the interspersing procedure was not powerful enough to extend findings beyond the 20% level (i.e., 40 and 60% more conditions). Results showed how the interspersing procedure could be used to encourage students to choose to do more target computation tasks. Discussion focuses on the applied value of the interspersing procedure and plausible causal mechanisms that may account for current and past findings related to student choice and interspersing brief tasks.     

Truth,authority and epistemological individualism in new age thought

Several problems are involved in studying the New Age, ranging from mapping its enormous diversity of beliefs and practices to locating it with reference to the conditions of modernity and postmodernity. With the latter issue in mind, the article is an analysis of understandings of truth and authority in the New Age. Against the assumption of some theorists, one of the central aims of the discussion is to demonstrate that, epistemologically speaking, the New Age is essentially a manifestation of modernity rather than postmodernity. Having established that, it is also shown that there are certain postmodern elements within the New Age network, as well as a superficial embracing of postmodernity and an emerging postmodern critique, all of which produce increasingly apparent tensions and confusion. The final section provides a critique of some of the principal problem areas.     

Catholic health care in the United States: American pluralism and religious meanings.

This essay chronicles the development of Catholic health care in the United States during the Nineteenth and Twentieth Centuries. The author points to the religious pluralism and the respect for that pluralism as well as to the evangelical drive for conversion evident in Catholic hospitals. This essay is a phenomenological study of this commitment to pluralism and the evangelical impulse within the contexts of health care.