Formation of visual “objects” in the early computation of spatial relations

Perceptual grouping is the process by which elements in the visual image are aggregated into larger and more complex structures, i.e., “objects.” This paper reports a study of the spatial factors and time-course of the development of objects over the course of the first few hundred milliseconds of visual processing. The methodology uses the now well-established idea of an “object benefit” for certain kinds of tasks (here, faster within-object than between-objects probe comparisons) to test what the visual system in fact treats as an object at each point during processing. The study tested line segment pairs in a wide variety of spatial configurations at a range of exposure times, in each case measuring the strength of perceptual grouping as reflected in the magnitude of the object benefit. Factors tested included nonaccidental properties such as collinearity, cotermination, and parallelism; contour relatability; Gestalt factors such as symmetry and skew symmetry, and several others, all tested at fine (25 msec) time-slices over the course of processing. The data provide detailed information about the comparative strength of these factors in inducing grouping at each point in processing. The result is a vivid picture of the chronology of object formation, as objects progressively coalesce, with fully bound visual objects completed by about 200 msec of processing.     

A comparison of two estimation algorithms for Samejima’s continuous IRT model

This study compares two algorithms, as implemented in two different computer softwares, that have appeared in the literature for estimating item parameters of Samejima’s continuous response model (CRM) in a simulation environment. In addition to the simulation study, a real-data illustration is provided, and CRM is used as a potential psychometric tool for analyzing measurement outcomes in the context of curriculum-based measurement (CBM) in the field of education. The results indicate that a simplified expectation-maximization (EM) algorithm is as effective and efficient as the traditional EM algorithm for estimating the CRM item parameters. The results also show promise for using this psychometric model to analyze CBM outcomes, although more research is needed in order to recommend CRM as a standard practice in the CBM context.     

Perceptual categories and the computation of “grandmother”

Abstract

Recent theoretical approaches to understanding face recognition have used converging evidence from studies of normal face processing, everyday errors and patterns of neuropsychological impairment to suggest how different face processing modules are related to each other. This paper disuses four issues that arise from this body of work. These concern the nature of representations involved in face recognition, the existence of parallel pathways for processing different types of information, the relationship between recognition and awareness, and the question of how faces become familiar. Current research provoked by these issues is reviewed in the paper and suggestions are made about the ways in which such research will help refine theories of face processing.     

A Brief Scale for Measuring “Behavioral Inhibition to the Unfamiliar” in Children

The behavioral inhibition scale (BIS) is a brief rating scale for measuring behavioral inhibition in children. The present study examined the test–retest stability of the BIS in a sample of 7–12-year-olds consisting of inhibited and non-inhibited children (N = 83). Results demonstrated that the BIS scores were fairly stable over a 2-year period, with a test–retest correlation of .77. Further, the BIS scores of inhibited children significantly increased over the 2-year period, whereas those of the non-inhibited comparison group significantly decreased. Finally, the BIS was in a theoretically meaningful way associated with temperamental traits as measured by the Rothbart scales. Altogether, these results provide support for the reliability and validity of the BIS.     

A follow-up to “Scale Effects in Memory for the Time of Events”: The earthquake study

This study is a follow-up to Friedman and Wilkins’s (1985) experiments on memory for the time of past events. That research showed that judgments of the time of past news events are often more accurate on finer than on grosser time scales. This finding is consistent with a reconstructive model but troublesome for models emphasizing judgments of the age of a memory. The present study was designed to control for the possibility that scale differences in Friedman and Wilkins’s study were due to the use of general time knowledge to infer when events of a given sort were likely to have occurred. Ninety-nine subjects estimated the time of an earthquake that had occurred 9 months prior to recall and that they reported having actually experienced. Separate estimates were given on each of five time scales ranging from year to hour. Recall of hour was extremely accurate in spite of the relative inaccuracy of the next three grosser time scales. This and other results support Friedman and Wilkins’s original interpretation.     

Is there an age-related positivity effect in visual attention? A comparison of two methodologies

Research suggests a positivity effect in older adults' memory for emotional material, but the evidence from the attentional domain is mixed. The present study combined 2 methodologies for studying preferences in visual attention, eye tracking, and dot-probe, as younger and older adults viewed synthetic emotional faces. Eye tracking most consistently revealed a positivity effect in older adults' attention, so that older adults showed preferential looking toward happy faces and away from sad faces. Dot-probe results were less robust, but in the same direction. Methodological and theoretical implications for the study of socioemotional aging are discussed.     

A Review of “Handbook for the Study of the Historical Jesus”

SUMMARY

The library Web site is a significant access point to a library's collections, resources, and services. A Web site can and should provide information about the library in a way that can be efficiently navigated and used by all library patrons. The usability of a library Web site can be improved through changes in organization and design informed by the experiences of real users. User expectations should be primary in determining the content, purpose, organization, and design of the site.     

A comparison of techniques to affect sociometric status: A small step toward primary prevention in the classroom?

Interdependent tasks and role play were implemented as treatment conditions in three elementary classrooms (n=142) to affect the peer nominations of the subjects. Third to fifth grade subjects, 68 female and 74 male, received $\text{1}\text{2}$ hour per day of treatment or a control condition for two weeks. Sociometric measurements were obtained prior to the treatment, one week after, and six weeks after. Analysis of covariance was used to test the effectiveness of the treatments. One week following treatment, intersependent tasks was effective (p<.05) in causing subjects in all grades to pick formerly low status children. On the six weeks followup only fifth grade subjects showed the effects of interdependent tasks (p<.01). Several post hoc analyses were performed to investigate the mechanisms behind the change. The results suggest that interdependent tasks may be an effective strategy in raising the popularity of low status children if the treatment becomes an ongoing part of classroom routine. The implications for primary prevention are discussed.     

From “Block-Things” to “Time-Things”: Merleau-Ponty’s temporal ontology in part two of the phenomenology of perception

Continental Philosophy Review - Scholars such as Renaud Barbara and Bernhard Waldenfels and Regula Giuliani have emphasized time’s central role in Merleau-Ponty’s philosophy, and...     

Is longing only for Germans? A cross-cultural comparison of Sehnsucht in Germany and the United States

Sehnsucht, the longing or yearning for ideal yet seemingly unreachable states of life, is a salient topic in German culture and has proven useful for understanding self-regulation across adulthood in a German sample (e.g., Scheibe, Freund, & Baltes, 2007). The current study tested whether findings for German samples could be generalized to the more individualistic and agentic U.S. American culture. Four samples of U.S. American and German participants (total N = 1,276) age 18 to 81 years reported and rated their 2 most important life longings and completed measures of subjective well-being and health. Measurement equivalence was established at the level of factor loadings for central life longing characteristics. German and U.S. American participants did not differ in self-reported ease of identifying personal life longings or their intensity. In comparison to Germans, however, U.S. Americans associated life longings less with utopian, unattainable states and reported less salience of the concept in everyday life. Associations with measures of adaptation suggest that life longings can be both functional and dysfunctional for development in both cultures.     

A Review of: “A Guide to the Books of James Hollis”

This article provides a small, personal glimpse of what occurs in a barroom subculture, both negative and positive (e.g., the camaraderie of my Friday night “family members”). I look at life in a barroom from different angles and perspectives, ultimately discovering a great deal of sadness as I try to connect barroom life to my own personal background.     

“Building Hope for the Future”: A Program to Foster Strengths in Middle-School Students

The authors investigated the effectiveness of a 5-week hope-based intervention designed to enhance hope, life satisfaction, self-worth, mental health and academic achievement in middle school students. The study includes a sample of 31 students from a community school, a matched comparison group of 31 students, and 2 secondary groups—guardians and teachers of the students’ intervention group. Students completed a questionnaire packet that included demographic information, the Portuguese versions of the Children’s Hope Scale, Students’ Life Satisfaction Scale, Mental Health and Self-Worth Scales. Academic achievement was obtained from school records. At baseline, groups are statistically similar on the variables of interest. At post-test the intervention group had enhanced hope, life satisfaction and self-worth. In the intervention group, benefits in hope, life satisfaction and self-worth were maintained at the 18-month follow up. Results suggest that a brief hope intervention can increase psychological strengths, and participants continue to benefit up to 1-year and 6-months later.     

A study on the theory of “returning to the original” and “recovering nature” in Chinese philosophy

The approach of returning to the original and recovering nature is a typical characteristic of Chinese philosophy. It was founded by the Daoist School and followed by both Daoist and Confucian schools. The precondition of returning to the original and recovering nature is the stillness and goodness within nature integrated into a whole afterwards. Its implementation includes not only returning to the original root so as to achieve the philosophical aim but also restoration to the original nature after it is injured by man’s physical nature and desire. The realization of human nature depends on the work making up for the loss of the original nature. Although there are different methods of realization concerning the return to the original nature, such as returning to the root, seeking the lost mind, extinguishing desire, being good at return, and the self-consciousness of intuitive knowledge, all of these aim at returning to the original nature of stillness and purity. The philosophical value consists in the unceasing pursuit of returning to the original nature.     

A Review of “The reviewer's guide to quantitative methods in the social sciences”

The Millon Clinical Multiaxial Inventory-II (MCMI-II) profiles of 26, psychiatric inpatients diagnosed as having borderline personality disorders were compared with profiles of 42 patients with no personality disorders. The borderline group scored significantly higher on the following scales: Disclosure (X), Debasement (Z), Passive-Aggressive (8A), Self-Defeating (8B), Borderline (C), and Major Depression (CC). Differences approaching significance were also found on substance abuse measures: the Alcohol Dependence (B) scale and Drug Dependence (T) scale. These findings are consistent with criteria established in the Diagnostic and Statistical Manual of Mental Disorders (3rd ed., rev. [DSM-III-R] American Psychiatric Association, 1987) and the results of other studies utilizing the MCMI-II. In addition, diagnostic efficiency of Scale C was assessed at various cutoff points defined by either base rate (BR) scores or the number of prototypic items endorsed. The greatest efficiency was found when a cutoff seven or more prototypic items was utilized, with nearly 80% of the patients correctly classified. Results are discussed in terms of their relevance for further research.     

A maximum likelihood approach to the “test of inclusion”

The method of scoring is used to obtain maximum likelihood estimates of the parameters in the White and Clark learning hierarchy validation model. From the estimate of the proportion of the population possessing only the superordinate skill in a pair of hierarchical skills, and its variance, the hypothesis of inclusion is tested. An illustrative example of the procedure is given.This study is based on doctoral dissertation submitted to the University of Ottawa. The author is indebted to Martin Cooper, Marvin Boss and Jean-Paul Dionne for their assistance.     

Affect consciousness or mentalization? A comparison of two concepts with regard to affect development and affect regulation

Affect consciousness refers to the ability to adequately perceive, reflect upon and express affect. The concept is used in clinical work with adults, but lacks an equivalent for children's experience of affect. This paper examines the developmental prerequisites for affect consciousness, as well as the concept's applicability to work with children. The main focus is on the development of affect regulation throughout the first 6 years of life. Special emphasis is put on the role of attachment and the unfolding of mentalization ability in this development. The role of play as an organizing factor for affective experience is discussed. Observation of play is highlighted as a strong indicator of affect consciousness in children.     

“Operationalism” in psychotherapy: A possible means of putting a sorry state of theory in better order?

It will be shown in this paper that the study of the actual conduct of psychotherapy, at least in its classical form with a patient speaking his or her mind in any way the patient desires and a therapist helping the patient pursue those thoughts and wishes and conflicts and hopes for better luck in real life than before, is more conducive to agreement among rather different therapists, to clearer reasoning over psychotherapeutic interventions, and to more promising theoretical articulations than anything available in the theoretical texts of psychotherapy.     

Depression in the Context of Disability and the “Right to Die”

Arguments in favor of legalized assisted suicide often center on issues of personal privacy and freedom of choice over one's body. Many disability advocates assert, however, that autonomy arguments neglect the complex sociopolitical determinants of despair for people with disabilities. Specifically, they argue that social approval of suicide for individuals with irreversible conditions is discriminatory and that relaxing restrictions on assisted suicide would jeopardize, not advance, the freedom of persons with disabilities to direct the lives they choose. This paper examines the idea promoted by some proponents of assisted suicide that it is reasonable to be depressed about one's diminished quality of life in cases of irreversible illness or disability and, therefore, such depression should not call into question the individual's competence to request assistance in dying. The concept of rational depression is defined and examined in the context of: four real-life cases involving individuals with disabilities who requested assistance in dying; a set of criteria commonly applied to decision-making to determine rationality; and research bearing on the emotional status of people with disabilities. It is concluded that although disability is associated with particular socially mediated stressors, there is no theoretical or empirical evidence to indicate that depression and its role in the right to die is dynamically different, more natural, or more reasonable for disabled people than for non-disabled people.