Attentional asymmetries during concurrent bimanual performance

An asymmetry of attention was observed when subjects attempted to perform concurrent, relatively independent tasks with the two hands: right-handed subjects performed very much better on a dual task which required them to follow the beat of a metronome with the left while tapping as quickly as they could with the right than with the converse arrangement. It is suggested that attentional strategies which have evolved to allow guidance of interdependent skilled bimanual activities are also used when subjects attempt to perform relatively independent concurrent bimanual movements, which are not observed in the naturally occurring motor repertoire. Thus, interactions between hand, hand preference and nature of task are an important factor in dual task performance.     

CONSTRUCTING A THEOLOGY OF EVOLUTION: BUILDING ON JOHN HAUGHT

The construction of a distinctively Christian “theology of evolution” or “theistic evolution” requires the incorporation of the science of evolutionary biology while building a more comprehensive worldview within which all things are understood in relation to our creating and redeeming God. In the form of theses, this article brings four support pillars to the constructive work: (1) orienting evolutionary history to the God of grace; (2) affirming purpose for nature even if we cannot see purpose in nature; (3) employing the theology of the cross to discern divine compassion in the natural world; and (4) relying on the divine promise of new creation. Among other things, John Haught's blueprint has located the pedestals on which these pillars will stand. For this groundwork, Haught deserves thanks.