Variances and Covariances of Kendall's Tau and Their Estimation

We generalize the formulas derived by Daniels and Kendall (1947) for the variance of the sample tau correlation. It is assumed that multivariate data are sampled from a population, and sample taus between pairs of variables are being used to estimate their population counterparts. Expressions for the variance of tau-a are generalized to allow for ties on either variable, and we further provide an expression for the covariance between two taus, including the special case where there is a variable in common. Unbiased estimators of the variance and the covariances are also derived for use in small samples. The variances and covariances of tau-a are used to provide asymptotic variances for tau-b and Somers' d.     

Conceptualizing and testing random indirect effects and moderated mediation in multilevel models: new procedures and recommendations

The authors propose new procedures for evaluating direct, indirect, and total effects in multilevel models when all relevant variables are measured at Level 1 and all effects are random. Formulas are provided for the mean and variance of the indirect and total effects and for the sampling variances of the average indirect and total effects. Simulations show that the estimates are unbiased under most conditions. Confidence intervals based on a normal approximation or a simulated sampling distribution perform well when the random effects are normally distributed but less so when they are nonnormally distributed. These methods are further developed to address hypotheses of moderated mediation in the multilevel context. An example demonstrates the feasibility and usefulness of the proposed methods.     

Functional and dysfunctional impulsivity in childhood and adolescence

There are few self-reports of impulsivity dealing with children, although this personality trait has been related to many behaviour problems in both children and adolescents. The appropriateness of the Dickman Impulsivity Inventory for Children (DII-c) and the Dickman Impulsivity Inventory (DII) to measure impulsivity in children and adolescents was assessed. The factorial structure of the DII-c and the internal consistencies for both inventories suggest the measured dimensions are not consistent until adulthood. These self-report measures are not appropriate for children and adolescents.     

Abortion,boxing and zionism: Politics and the APA

Political resolutions of the American Psychological Association (APA) are critically examined. A sampling of the political resolutions of the APA is provided. Two major issues are addressed: (1) under what conditions it is proper for the APA to make political resolutions; and (2) whether the process by which these resolutions are made is just and reasonable. Finally, we offer suggestions for a more tempered approach that emphasizes the explicit role of scientific data conditions it is proper for the APA to make political resolutions; and (2) whether the process by which these resolutions are made is just and reasonable. Finally, we offer suggestions for a more tempered approach that emphasizes the explicit role of scientific data.     

Rules and topics in conversation

Rules of conversation are given that specify what can follow what. A system for deciding what makes a reasonable subject for a conversation is shown. Topics are discussed and rules for topic shift are presented.     

Continuities and Discontinuities in Self-Regulatory and Self-Evaluative Processes: A Developmental Theory Relating Self and Affect

This article presents a developmental theory of the relation between self and affect. Self-discrepancy theory (Higgins, 1987) is used as a framework for considering developmental and individual differences in children's self-concepts, self-regulation, and self-evaluation. Developmental changes in children's representational capacities are described that produce developmental shifts in this self-system. Different modes of caretaker-child interaction are distinguished in terms of how features of the interaction impact psychologically on the child. The implications of these differences for children's self-system and emotional/behavioral vulnerabilities are discussed. The development of self-regulatory and self-evaluative processes are distinguished with respect to developmental continuities and discontinuities. Patterns of sex differences in socialization, conduct, and emotional problems are described to exemplify the need for distinguishing these two processes developmentally. The question is raised whether children can be socialized to maximize the positive conduct valued by society and the positive self-regard valued by individuals.     

Coefficients alpha and reliabilities of unrotated and rotated components

It has been shown by Kaiser that the sum of coefficients alpha of a set of principal components does not change when the components are transformed by an orthogonal rotation. In this paper, Kaiser's result is generalized. First, the invariance property is shown to hold for any set of orthogonal components. Next, a similar invariance property is derived for the reliability of any set of components. Both generalizations are established by considering simultaneously optimal weights for components with maximum alpha and with maximum reliability, respectively. A short-cut formula is offered to evaluate the coefficients alpha for orthogonally rotated principal components from rotation weights and eigenvalues of the correlation matrix. Finally, the greatest lower bound to reliability and a weighted version are discussed.Comments by Henk A.L. Kiers and by anonymous referees are gratefully acknowledged.     

Helping and change without traditional therapy: Commonalities and opportunities

The therapeutic elements of four types of helping interactions (friends/family, religion, cinematherapy/bibliotherapy, and self-help groups), and their commonalities with traditional psychotherapy are explored. Empirical findings in these areas are discussed, along with suggestions for process and outcome research. Recommendations for the integration of self-help and paraprofessional counseling with professional therapy are presented.     

Compact representations of positional knowledge in short and long words for letters and features

Single-letter statistical measures providing values for each letter-position and word-length combination are too unwieldy for use in working letter-recognition models; more compact tables are needed. Compact tables collapsing word length to short or long words and letter positions to first, last, or middle letters are presented for the frequency and versatility of single letters. Letter-position and word-size differences are preserved in this reduced format. To test awareness of these values, subjects rate the commonness of letters in each letter position. Their responses indicate high intersubject agreement and correlate highly with the frequency and versatility measures. A LISP program that translates the letter knowledge for each letter into a corresponding knowledge for each feature in a feature set is described. Distinctiveness values for each feature (see Shimron & Navon, 1981) are computed.     

Nutrition and behavior

This article focuses on three nutritional problems that are associated with developmental problems in infancy and childhood. Major points are that (a) nutritional problems are often linked to environmental disadvantage, (b) the possibility exists for long-term developmental effects, (c) treatment for undernutrition does not appear to reverse all negative effects, and (d) prevention of nutritional disorders rather than treatment holds the greatest promise for eradicating behavioral and developmental problems.     

Psychoanalysis and Groups: History and Dialectics

Abstract

Our team recently conducted a randomized controlled trial comparing group cognitive behavior therapy for psychosis (CBTp) to group social skills training for symptom management and a wait-list control group, for early psychosis. The results at post-therapy and six months provided considerable empirical support for the efficacy of the group CBTp. The results of the one-year follow-up are described here. Given the high attrition rates, mostly in the comparison and control conditions, imputations were not possible, so that only the results of those having completed more than 50% of the group CBTp are presented. Significant improvements at 12 months were found for social support and insight. Negative symptoms remained low, whereas positive symptoms went back to pre-therapy levels. Challenges regarding attrition with this clientele are discussed.     

Inpatient child and adolescent therapy groups: Boundary maintenance and group function

Inpatient therapy groups are described as subsystems of the social systems that comprise hospital units. System theory concepts are used to illustrate how clear group boundaries are essential for the effective functioning of inpatient therapy groups. Milieu dependency dynamics are viewed as a major source of resistance to group boundary formation in psychiatric institutions for children and adolescents.     

The baby and the bathwater: 'Professionalisation' in psychotherapy and counselling

The current rush to professionalisation in the field of counselling and psychotherapy, and some of its deleterious effects, are examined. The parallels between this process and the experience of psychoanalysis in the USA in the 1940s and early 1950s are demonstrated, quoting from contemporary critics; and comparisons are drawn with the American phenomenon of managed care. An account is offered of what is happening in terms of the sociology of professions, suggesting that 'expert systems' are being substituted for 'local knowledges—skills and wisdoms which cannot be fully systematised. The argument that this process is for 'the good of the client' is considered and rejected. Finally, some thoughts are presented about the likely future for counselling and psychotherapy, arguing that the victory of professionalisation and expertise is unlikely to be complete.     

Children Exposed to Domestic Violence and Child Abuse: Terminology and Taxonomy

Three definitional issues regarding children exposed to domestic violence are examined. First, the multiple ways in which a child can be exposed to violence is discussed. A taxonomy of 10 types of exposure is proposed. Nine key characteristics of domestic violence, as they relate to children and children's exposure, are then outlined. The third issue addressed concerns why children who are exposed to domestic violence can be considered victims of child maltreatment. These children, by nature of their experience in the home, are psychologically maltreated and are also at high risk for physical abuse and some risk for sexual abuse. Empirical questions concerning these definitions and taxonomies and their interrelations are discussed.     

Ethical considerations for research and treatment with runaway and homeless adolescents

Ethical considerations for working with runaway and homeless youth in research and treatment settings are presented. Issues of parents' and adolescents' consent for research and treatment are discussed, with particular attention given to the lack of explicit guidelines for working with abused and neglected youth. The principles of beneficence and justice are discussed as they apply to intervening with a high-risk, multiproblem population. The authors offer a rationale for allowing adolescents to self-consent to research and treatment. They argue that in many circumstances, requiring parental consent may not be in the youth's best interest and may preclude his or her participation in treatment and research programs.     

Personality and interests as predictors of educational streaming and achievement

In this study Holland's RIASEC Model of vocational personalities and the Five-Factor Model of personality are used (i) to assess individual differences among study majors and (ii) to predict educational achievement. A sample of 934 last-year students who enrolled in different academic majors filled out Dutch/Flemish adaptations of the NEO-PI-R (Costa and McCrae, 1992) and the Self-Directed Search (Holland, 1977; 1979). The results show that both models are useful to describe differences among different majors. Conscientiousness proves to be a general predictor of grades and study career. For the other Big Five dimensions, except for Agreeableness, major and/or gender specific relationships with educational outcomes are observed. Holland's interest dimensions are not related to educational achievement, except for some moderate gender or major specific correlations with the Investigative and the Artistic scales. Suggestions for future research regarding educational streaming and counselling are discussed.     

Variability and sequential effects in magnitude production and estimation of auditory intensity

Magnitude production and estimation data from the same subjects are analyzed in three ways. The coefficient of variation of the ratio of successive responses Inumbers in estimation, SPL in production) are compared; both exhibit, as a function of stimulus difference, the V-shaped pattern previously found in estimation data. A multiple regression of responses on the stimulus and on these events of the previous trial exhibit similar patterns, although the effects of the previous trial in production are somewhat less. The correlation between successive responses, averaged over constant stimulus differences, are very large for small differences and about zero for large ones. These somewhat surprisng results for production are examined from the point of view of an intensity attention band hypothesis.