Quanta, quarks, and families: implications of quantum physics for family research

This paper offers recommendations for family research in light of the scientific paradigm ushered in by quantum physics in the early twentieth century. After summarizing the basic discoveries of quantum physics, the author discusses philosophical implications of these discoveries, and then presents implications for conducting scientific research about families within a post-Newtonian paradigm that emphasizes relations, process, and dynamic causation. The author argues for using complementary research models, including linear and systemic, because no one theory or methodology can illuminate fully the inscrutable nature of family processes.     

Grey Parrot (Psittacus erithacus) numerical abilities: addition and further experiments on a zero-like concept

A Grey parrot (Psittacus erithacus), able to quantify 6 or fewer item sets (including heterogeneous subsets) by using English labels (I. M. Pepperberg, 1994), was tested on addition of quantities involving 0-6. He was, without explicit training, asked, "How many total X?" for 2 sequentially presented collections (e.g., of variously sized jelly beans or nuts) and required to answer with a vocal English number label. His accuracy suggested (a) that his addition abilities are comparable to those of nonhuman primates and young children, (b) some limits as to his correlation of "none" and the concept of zero, and (c) a possible counting-like strategy for the quantity 5.     

Three-month-olds' visual preference for faces and its underlying visual processing mechanisms

This study was aimed at investigating the face preference phenomenon and its underlying mechanisms at 3 months of age. Using an eye-tracker apparatus, Experiment 1 demonstrated that 3-month-olds prefer natural face images to unnatural ones, replicating and extending previous evidence obtained with schematic facelike stimuli. Experiments 2 and 3 showed that the general mechanisms that induce face preference in newborns could not explain the same phenomenon at 3 months of age, when infants are attracted by perceptual cues more specific to faces. This suggests that signs of a process of cognitive specialization are already present in 3-month-olds' visual behavior toward faces.     

Preferred Prayer Styles and Anxiety Control

To date, the literature on prayer and anxiety has yielded mixed results. Recent development of a new instrument has improved our ability to measure individuals’ prayer activities, which may be a promising means of clarifying this literature. This correlational study examined preferred prayer styles and associated scores on measures of anxiety control and trait anxiety in a sample of 85 college students. Results suggested that individuals whose prayer styles were characterized by active rather than avoidant coping were likely to evidence greater perceived control of anxiety and lower levels of trait anxiety. Dr. Harris is a rehabilitation psychologist at the VA Medical Center in Minneapolis, MN. Dr. Schoneman is a clinical psychologist at Casa Pacifica and in private practice. Dr. Carrera is a counseling psychologist at the Psychological Services Center at the University of Cincinatti. Correspondence to J. Irene Harris, Staff Psychologist, VA Medical Center, One Veterans Drive, Minneapolis, MN 55417; e-mail: jeanette.harris2@med.va.gov.     

The structure of three-dimensional object representations in human vision: evidence from whole-part matching

This article examines how the human visual system represents the shapes of 3-dimensional (3D) objects. One long-standing hypothesis is that object shapes are represented in terms of volumetric component parts and their spatial configuration. This hypothesis is examined in 3 experiments using a whole-part matching paradigm in which participants match object parts to whole novel 3D object shapes. Experiments 1 and 2, consistent with volumetric image segmentation, show that whole-part matching is faster for volumetric component parts than for either open or closed nonvolumetric regions of edge contour. However, the results of Experiment 3 show that an equivalent advantage is found for bounded regions of edge contour that correspond to object surfaces. The results are interpreted in terms of a surface-based model of 3D shape representation, which proposes edge-bounded 2-dimensional polygons as basic primitives of surface shape.     

A note on the parallel processing of single-featured forms

Single-featured forms (vertical and horizontal lines) were presented to Ss both successively and simultaneously, the same form being presented one, two, or four times. Hit rates (HRs)for both simultaneous and successive presentations of two and four forms exceed the single-form HR. The HR for four successively presented forms (1F4) exceeds the four simultaneous form (4F) HR. The HR increases in the simultaneous conditions were not found in a previous study using single-featured forms. The discrepant results of the two studies indicate that energy level of stimulus presentation and confusability among forms affect the magnitude of HR increase in the simultaneous conditions. The finding of a greater 1F4 HR than 4F agreed with previous findings, indicating that with single-featured stimulus forms, Ss do not process simultaneous displays in parallel.     

The interaction of objective and subjective organizations in a localization search task

We investigated how both objective and subjective organizations affect perceptual organization and how this perceptual organization, in turn, influences observers’ performance in a localization search task. Two groups of observers viewing exactly the same stimuli (objective organization) performed in significantly different ways, depending on how they were induced to parse the display (subjective organization). In Experiments 1 and 2, the observers were asked to describe the location of a tilted target among a varying number of vertical or horizontal distractors. Subjective organization was induced by instructing observers to parse the display into either three horizontal regions (rows) or three vertical regions (columns). The position of the target was critical: location performance, as assessed by reaction time and errors, was consistently impaired at the locations adjacent to the boundaries defining the regions, producing what we refer to as thesubjective boundary effect. Furthermore, the extent of this effect depended on whether the stimulus-driven and conceptually driven information concurred or conflicted. This made location information more or less accessible. In Experiment 1, the strength of objective grouping was a function of the proximity of the items (near or far conditions) and their orientation in a 6×6 matrix. In Experiment 2, the strength of objective grouping was a function of similarity of color (items were color coded by rows or by columns) and the orientation of the items in a 9×9 matrix. The subjective boundary effect was more pronounced when the display promoted grouping in the direction orthogonal to that of the task (e.g., when observers parsed by rows but vertical distractors were closer together [Experiment 1] or color coded [Experiment 2] to induce global columns). In contrast, this effect decreased when the direction of both objective and subjective organizations was parallel (e.g., when observers parsed by rows and horizontal distractors were closer together [Experiment 1] or were color coded [Experiment 2] to induce global rows). A localization search task proved to be an ideal forum in which objective and subjective organizations interacted. We discuss how these results indicated that observers’ performance in a localization task was determined by the interaction of objective and subjective organizations, and that the resulting perceptual organization constrained coarse location information.     

EMOTIONAL CONTAGION Gender and Occupational Differences

Theorists have proposed that men and women and those in various occupational groups should differ in their susceptibility to primitive emotional contagion. Study 1 was designed to explore the extent to which gender and occupation affected respondents' self-reports of emotional contagion, as measured by the Emotional Contagion (EC) scale. As predicted, women in a variety of occupations secured higher total EC scores than did men. Study 2 was designed to determine the extent to which gender affected self-reports of emotional contagion (again as measured by the EC scale) and actual responsiveness to others' emotions. As predicted, women received higher EC scores, reported sharing the targets' emotions to a greater extent, and were rated by judges as displaying more emotional contagion than did men.