How do Motor Systems Deal with the Problems of Controlling Three-Dimensional Rotations?

Rotations are fundamental to motor control, not only for orienting to stimuli but also in the joint articulations that underlie translational movements. Studying three-dimensional (3-D) rotations of the simplest joint system, the eye, has provided general insights into the neural control of movement. First, in selecting one 3-D eye orientation for each two-dimensional (2-D) gaze direction, the oculomotor system generates a behavior called Listing's law that constrains eye position to a 2-D plane, Listing's plane. This selection is made internally by an inverse kinematic transformation called the Listing's law operator. Second, the oculomotor system incorporates the inherent multiplicative relationship between rotational velocity and position to generate the 3-D movement and position commands required by Listing's law. Finally, the coordinate systems for these commands appear to align with Listing's plane rather than with anatomic structures. Recent investigations have revealed similar behavioral constraints in the orientations of the head and arm, suggesting that the neural mechanisms for Listing's law may have analogues in many motor systems.     

A Comparison of Obsessive–Compulsive Personality Disorder Scales

In this study, we utilized a large undergraduate sample (N = 536), oversampled for the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text revision [DSM–IV–TR]; American Psychiatric Association, 2000) obsessive–compulsive personality disorder (OCPD) pathology, to compare 8 self-report measures of OCPD. No prior study has compared more than 3 measures, and the results indicate that the scales had only moderate convergent validity. We also went beyond the existing literature to compare these scales to 2 external reference points: their relationships with a well-established measure of the five-factor model of personality (FFM) and clinicians' ratings of their coverage of the DSM–IV–TR criterion set. When the FFM was used as a point of comparison, the results suggest important differences among the measures with respect to their divergent representation of conscientiousness, neuroticism, and agreeableness. Additionally, an analysis of the construct coverage indicated that the measures also varied in terms of their representation of particular diagnostic criteria. For example, whereas some scales contained items distributed across the diagnostic criteria, others were concentrated more heavily on particular features of the DSM–IV–TR disorder.     

Risk,Resilience, and the Rorschach: A Longitudinal Study of Children Who Experienced Sexual Abuse

Experiencing sexual abuse increases the risk that children will report or otherwise demonstrate problems with emotion, behavior, and health. This longitudinal study of 44 children who experienced sexual abuse examined whether information processing as assessed via the Rorschach Inkblot Test was associated with child-reported depression symptoms assessed via the Children's Depression Inventory (Kovacs, 1992) concurrently and an average of 15 months later. Children whose Rorschach protocols were relatively free of scores suggesting intense distress, complex processing, and sexual content were more likely to experience remission of depression symptoms at follow-up. Findings provide incremental validity for certain Rorschach indexes to inform prognosis regarding depression symptoms and perhaps their treatment.     

Therapists' perceptions of healthy family functioning

Abstract

For several decades family theorists, researchers, and clinicians have attempted to describe healthy and dysfunctional family functioning. The numerous articles and studies with this focus have been reviewed elsewhere (Riskin & Faunce, 1972; Jacob, 1975). Until recently a disproportionate amount of attention has been given to pathology. Several volumes in the past few years have tried to redress this bias by focusing primarily on healthy family functioning (Kantor & Lehr, 1976; Lewis, Beavers, Gossett & Phillips, 1976).     

Expecting More in Relationships – Implications of Relational Entitlement

Abstract

Sense of relational entitlement refers to what individuals’ believe they “should” expect from their romantic partner. When expectations are both unrealistic and not met by one’s partner, there is a potential for adverse consequences. Researchers surveyed 195 female participants between the ages 18-60. The study examined the influence of one’s sense of relational entitlement with varying conflict strategies. The findings revealed that extreme forms of one’s sense of relational entitlement was associated with conflict strategies like verbal aggression, and control & domination. Thus, one’s sense of relational entitlement appears to play a significant role in how individuals handle conflict.     

Evaluating the effect of educational media exposure on aggression in early childhood

Preschool-aged children (M = 42.44 months-old, SD = 8.02) participated in a short-term longitudinal study investigating the effect of educational media exposure on social development (i.e., aggression and prosocial behavior) using multiple informants and methods. As predicted, educational media exposure significantly predicted increases in both observed and teacher reported relational aggression across time. Follow-up analyses showed that educational media exposure also significantly predicted increases in parent reported relational aggression across more than a two year period. Results replicate and extend prior research that has demonstrated links between educational media exposure and relational aggression, but not physical aggression, during early childhood.     

The Effects of Coaching and Speeding on Big Five and Impression Management Scale Scores

We examined the effects of coaching and speeding on personality scale scores in a faking context (N = 192). A completely crossed 2 × 2 experimental design was used in which instructions (no coaching or coaching) and speeding (with or without a time limit) were manipulated. No statistically significant effects on scale scores were evidenced for speeding. Coaching participants significantly elevated scores (average d = .76) for each of the Big Five personality factors but did not significantly elevate the scores on the Impression Management scale (d = .06). Cognitive ability was significantly positively related to impression management for uncoached participants but not for coached participants. An exploratory simulation suggests that coaching would have an effect on who would be selected for a job.     

The Effects of Warnings and Speeding on Scale Scores and Convergent Validity of Conscientiousness

We examined the effects of warnings and speeding on scale scores and convergent validity of a measure of Conscientiousness in a faking context (N = 329). A completely crossed 2 × 2 experimental design was used in which instructions (no warning or a warning) and speeding (with or without a time limit) were manipulated. No statistically significant effects on scale scores or convergent validity were evidenced for speeding. Warning participants did decrease Conscientiousness scores by almost 1 standard deviation (d = .91). Warnings also moderated the relationship between self- and observer-ratings of Conscientiousness such that the relationship between self- and observer-ratings was statistically significant and positive in the warned conditions (r _partial = .29, p < .01, n = 136), but this same relationship was statistically nonsignificant (r _partial = ?.14, p > .05, n = 148) in the unwarned conditions.