Coherence and transparency of moving plaids composed of Fourier and non-Fourier gratings.

We examined the perceptual coherence of two-component moving plaids. The gratings that constituted the plaids were either standard Fourier gratings (F), in which luminance was determined by a drifting sinusoid, or non-Fourier gratings (NF), in which the contrast of a random background was modulated by a drifting sinusoid. These NF gratings are examples of stimuli that generate a compelling percept of motion, even though they fail to elicit a motion signal from motion analyzers based on standard cross-correlation (Chubb & Sperling, 1988). Naive observers viewed three types of stimuli consisting of superpositions of these two components: (1) two standard drifting gratings (F/F), (2) two non-Fourier drifting gratings (NF/NF), and (3) one standard and one non-Fourier drifting grating (F/NF). As expected, the F/F stimulus yielded a compelling percept of coherent motion. The dominant percept of all the observers for the NF/NF stimulus was one of coherent motion, provided that both gratings were visible and of approximately equal contrast. None of the observers reported a dominant percept of coherent motion for the F/NF condition, over a wide range of contrasts for the two grating components and across two varieties of NF gratings. In view of the results of Albright (1992) and Albright and Chaudhuri (1989), that show that single cells in macaque V1 and MT respond to both F and NF motion, one cannot interpret our findings as evidence that F and NF motion are processed independently. Alternative, "higher level" interpretations based on the intrinsically ambiguous nature of the stimuli and physical laws governing the appearance of transparent objects are discussed.     

Hardiness and sense of coherence and their relation to negative affect

This study attempted to determine the degree to which measures of health proneness and measures of negative affect represent two distinct, although related, constructs. In addition, it examined the relation between Antonovsky's salutogenic construct of sense of coherence (SOC) and Kobasa's health proneness construct of hardiness. Five health proneness and three negative affect measures were filled out by 164 male patients with coronary heart disease. The pattern of correlations between these measures and confirmatory factor analysis indicated that although the measures of health proneness are negatively related to measures of negative affect, these two sets of measures and the constructs to which they are related can be differentiated from each other. However, SOC was found to be less independent of negative affect than was hardiness.     

Affect,epistemology, and the perceptual-ecological perspective: Interpersonal processes and affordances in psychotherapy

Burrell recently presented an approach to epistemology in psychotherapy called the motor-evolutionary metatheory. This approach to therapeutic learning and knowledge is driven by the information-processing approach to cognition. It is characterized by an acceptance of the doctrine of the impoverishment of sense data, an information-processing theory of knowledge, and indirect realism. A viable yet contrasting perspective, derived from the pioneering work of James J. Gibson, is developed here. The resulting perceptual-ecological metatheory is characterized by the doctrine of information inherent in sense data, a perceptually based epistemic theory, and direct realism. It also includes the central theory of affordances, which is extended to encompass social relations and affect. The perceptual-ecological metatheory links these phenomena in a coherent way. Implications for reconceptualizing the psychotherapeutic process are explored.     

Young children's comprehension of similarities underlying metaphor

The comprehension of similarity by forty-eight 3-, 4-, and 5-year-olds was investigated using a set of binary choice tasks. These tasks were composed of contrasting concepts that were to be matched to conceptually related target stimuli on the basis of relationships underlying object/personality metaphor, color/personality metaphor, concrete metaphor, taxonomic similarity, and functional association. The youngest children were able to comprehend each of the metaphoric and nonmetaphoric relationships, and this ability improved with age.This article is based on the doctoral dissertation of Victor Broderick (Broderick, 1985),The Development of Metaphor Comprehension in Preschool Children, at the Pennsylvania State University. The author would like to thank the directors and instructors of the Child Development Council of Center County, Childspace, OEO, Punkin Patch, Garden of Children, the Jewish Community Center, Our Children's Center, and Parkforest Montessori School for their cooperation and helpful assistance in recruiting subjects and collecting data on the premises. I would also like to thank David Palermo, Keith Nelson, Robert Seibel, Donka Farkas, Philip Prinz, and Francis Whaley for their input and advice. Finally, I would like to thank those 3-, 4-, and 5-year-olds who sat patiently for as much as 60 min, answering unusual questions about monkeys, chocolate, and burned out light bulbs.     

“Some more” notes,toward a “third” sophistic

Historians of rhetoric refer to two Sophistics, one in the 5th century B.C. and another c. 2nd century A.D. Besides these two, there is a 3rd Sophistic, but it is not necessarily sequential. (The 3rd is counter to counting sequentially.) Whereas the representative Sophists of the 1st Sophistic is Protagoras, and the second, Aeschines, the representative sophists of the 3rd are Gorgias (as proto-Third) and Friedrich Nietzsche, Jean-François Lyotard, Michel Foucault, Jacques Lacan, and Paul de Man.To distinguish between and among Socrates, Plato, and Aristotle, and then Protagoras, Gorgias, and Lacan, the author determines how far each of these personages can count. The model of counting, used semiotically across the topoi of possible/impossible, is that of the people of New Guinea: one thing, two things, many things. It is determined (generally) that the philosophers, including Aristotle, count to one; the Sophists to two; and Gorgias, Lacan, and Lyotard, et al. count to many things, thereby breaking up a monism or binarism. The ancient philosophers employ a substratum of probability to hold together the contraries of possible/impossible; the Sophists employ anti/logic, which keeps the contraries/antitheses separate and therefore without synthesis, but which eventually threatens the integrity of the substratum, or the law of non-contradiction; and Gorgias, Lacan, Lyotard et al. theorize about the impossibility/Resistance of the Logos (reason, logic, law, argumentation, history) to Theory/Totalization, because of the Gorgian Kairos and the Lacanian Real — both of which enter the Logos and break up the cycle of the antitheses and create something new, irrational (Untersteiner).This breaking up has a negative/positive influence on Protagoras's man-measure doctrine, which in turn has a similar influence on the problem of the ethical subject. The subject/agent not only no longer knows (by way of Logos) but also no longer acts (as independent agent); the subject becomes a function of Logos as determined by Kairos/Real; it moves from a hypotaxis/syntaxis of one and two to a radical parataxis/paralogy of some more.From the Impossibility/tragedy of knowledge, however, comes the Possible, or Possibilisms, which allows for the new (though divided) ethical subject to reclaim its position as individual. Such a reclamation of the subject, however, has a profound effect on argumentation, and especially the notion of consensus. What is wanted, then, in a Third Sophistic ethical — as opposed to a political — rhetoric is dissensus through radical parataxes and paralogies.     

Aspects of fear of personal death,levels of awareness,and religious commitment

This study used a multidimensional and multilevel approach to study the relation between fear of death and religious commitment. A multidimensional self-report measure of fear of personal death, four TAT cards known to elicit a relatively high frequency of death themes, and an index of Jewish religious commitment were administered to 178 young male Jewish Israelis. Unidimensional and multidimensional analysis of these measures suggested that Jewish religious commitment is related to a heightened specific sensitivity to death at different levels of awareness.     

A computer analysis of serial interactions in spaced responding

Serial dependencies in interresponse times were studied by means of a digital computer. In monkeys exposed to a DRL 20-sec schedule of reinforcement, serial interactions appeared at all stages of training. Early in training the serial effects consisted of trains of relatively long interresponse times interspersed among trains of relatively short ones. Later on, the serial effects appeared to be characterized by a tendency to drift up and down in long wavelength periods around the minimum interval required for reinforcement. After training to a point at which most interresponse times produced reinforcement, serial effects of a still more subtle nature appeared. These effects were made apparent by autocorrelation and power spectrum methods and consisted of both long-term and extremely short-term fluctuations in interresponse times.