Reviews

Studies in East European Thought -     

Long-term effects of parental wartime captivity on children: Children of POW and MIA servicemen

The question asked by this study was: Are there possible second-generational effects, not only for children of prisoners of war and hostages, but also for children of parents who were/are missing in action? This report, reviewing the literature on prolonged parental wartime captivity in relation to longterm effects on children, with a specific focus on the Center for POW Studies of Vietnam era families, illustrates the strong relationship between mothers' and children's abilities to cope with their highly stressful and ambiguous situation.     

The diagnostic process,the diagnosis and homeostasis

In this paper I shall try to analyse appropriate logic and actual methods as a preliminary to developing expert systems that will simulate clinical diagnosis. It is doubtful that all diagnoses address the same kind of problem and hence no one logic will suffice. Sometimes the signs and symptoms manifest an underlying disorder that cannot be observed directly (“the substantialist model”); sometimes there seems to be no underlying disorder and the diagnosis is a rearrangement of the data (“the nominalist model”). In deciding their merits in the particular case, we must identify the sources of variation; what is meant by saying that the data are independent; and what can be meant by “wrong” diagnosis and misclassification. Problems arise in human diagnosis because the data may be false, even lies; because the known list of diseases is not exhaustive; and because the probability of multiple unrelated diseases increases with age. Special difficulties arise from homeostasis (which is fundamental in defining and understanding disease) because the primary disturbances may be hard to distinguish from the homeostatic responses to them.     

Categorizing objects in isolation and in scenes: what a superordinate is good for

Many studies have shown that subjects are faster at categorizing objects into "basic" concepts than into more general superordinate concepts. However, all of these studies have used a categorization task in which single, isolated objects are identified. There is good reason to believe that superordinate concepts are typically used to refer to collections of objects rather than to individual objects. For example, people more often use the term furniture to refer to a number of pieces of furniture rather than to name a single piece. This suggest that superordinate concepts include information about multiple objects and their common relations, particularly the typical scenes in which such objects appear. Four experiments examined this possibility by investigating whether the basic concept advantage will decrease or reverse itself when subjects are asked to categorize an object as part of a scene. The results showed that the basic-superordinate difference did decrease when subjects categorized objects in scenes. Furthermore, when an object was placed in an inappropriate scene, there was more interference for superordinate identifications. The results suggest qualitative differences in the representations of superordinate and basic concepts.     

TRUTH, RELATIVISM, AND CROSSWORD PUZZLES

Abstract. Neither the correspondence nor the coherence theory of truth does justice to the truth claims made in science and theology. I propose a new definition that relates truth to solving puzzles. I claim that this definition is more adequate than either of the traditional theories and that it offers two additional benefits: first, it provides grounds for a theory regarding the relations between theology and science that may stand up better to philosophical scrutiny than does critical realism; and second, it blocks the move to relativism based on recognition of the plurality of perspectives and the historical and social conditioning of knowledge.     

Differential thresholds for limb movement measured using adaptive techniques.

Differential thresholds for limb movement were measured in 10 subjects, using the transformed up-down procedure. Subjects were required to indicate which of two random displacement perturbations delivered to their forearms had the larger standard deviation (SD). The SD of the reference signal was fixed for each experimental condition at one of seven values ranging from 0.05 to 3.2 mm. THe SD of the other signal varied depending on the subject's response. Using this procedure, the differential threshold for limb movement was calculated to be 8%, which is very similar to the thresholds estimated previously for changes in limb position (9%) and force (7%). The sensitivity of the human proprioceptive system to changes in limb displacement was much greater than anticipated, with subjects being able to resolve a 5-microns difference between two perturbations delivered to their arms.     

A functional analysis of objects used in stereotyped behavior: The relationship between social and non-social stimuli

This study examined the effects of objects, with and without social stimulus properties, on the behavior of children who are severely retarded, and compared such effects with behavior under conditions of minimal stimulation. It was found that these children approach, contact, grasp and interact significantly less often with objects which possess social stimulus properties than with objects which possess no social qualities. These results are discussed in relation to the ongoing debate on the importance of relationships in the reduction of challenging behavior. It is concluded that while having access to close-bonded relationships may be necessary for the reduction of challenging behavior, in some cases at least, it may not be sufficient.     

What Can Be Learned from the Arts About Aging?

This brief article examines some of the theoretical questions raised by aesthetics. Paintings have not only form and content, but are underpinned by philosophical principles that connect art to gerontology. We examine specific theoretical messages of a trend in art that have important implications for conceptualizing humans, including their interactions and surroundings. Three artists are used to illustrate this trend: Cezanne, Picasso, and Pollock. These and other artists of this century foster a heightened awareness of humanistic concerns. Caught between abstract reason and expert systems on the one hand, and the life worlds of older people on the other, gerontology finds itself in a place where art can speak to its deeper concerns in unique ways.