Selecting mapping rules and responses in mixed compatibility four-choice tasks

Four-choice reaction tasks with a mixture of compatible and incompatible mappings were used to examine implications of the views that response selection occurs (a) in two stages (selection of the appropriate mapping rule, followed by application of the rule) and (b) by means of a second, direct route when the mappings for all possible stimuli are known to be compatible. All experiments showed, consistent with the two-stage view, that responses were faster and compatibility effects smaller when the mapping distinction corresponded to the left-right or inner-outer locations for the stimulus-response ensemble than when it did not. Moreover, precuing benefits tended to be larger when the cued responses had the same mapping than when they did not. There was an added benefit when both precued responses were compatible, rather than incompatible, consistent with the view that selection between compatible responses can proceed along a direct route. Received: 9 July 1997 / Accepted: 5 February 1998     

Cross-task cross talk in memory and perception

The application of the additive factors method depends on finding factors that selectively influence processing stages. When all the processes for a task are in series, a factor directly influencing a process might change its output and thereby have indirect influence on succeeding processes. We investigate whether such indirect influence is possible between processes associated with different tasks being performed together. In two dual-task memory scanning and arithmetic experiments with digits as the stimuli for both tasks, information relevant for only one of the tasks nonetheless affected performance of the other. When the same digit was relevant for the two tasks, cross-task facilitation and interference were observed in some cases. Displaying the same digit for both tasks led to relatively fast response times, paralleling the effect of flankers in the response competition paradigm. But repetition of digits in memory slowed responses. It is suggested that the need for control processes to keep task information segregated is responsible for the pattern of effects.     

Significant events in a psychodynamic psychotherapy group for eating disorders

This qualitative pilot study was designed to identify and explain significant events for patients participating in a psychodynamic psychotherapy group for eating disorders. Specifically, seven members of a mixed (i.e., anorectic, bulimic, obese) eating disorders group recorded what they perceived as the three most significant events in group meetings for 14 weeks. In addition, group members were instructed to record why each event was significant. Manifest and latent content analyses of the data revealed that members found feedback and observing others the two most common types of significant events, and emotional experience, insight, and relationship the reasons these events had such impact. The implications of these results for working with the eating-disordered patient in group, as well as their implication for general group theory and practice, are discussed.An earlier vesion of this paper was presented at the 1991 meeting of the American Group Psychotherapy Association, New York. This paper was funded, in part, by a California State Faculty Support Grant and a Santa Barbara Cottage Hospital Research Grant awarded to the first author. The authors would like to thank Sean T. Casey, Sally Barton, Dr. Allison Wollitzer, Tom Knowlton, Craig Park, and Beth Buxton for their assistance in the preparation and execution of this study.     

Association Between Body Mass Index and Motor Competence in Santal Children of Purulia District,India

The purpose of this study was to evaluate the relationship between body mass index and motor competence in Santal children 5–12 years old. A total of 816 Santal children were studied. Children's adiposity status was assessed by body mass index (BMI) for age z-score based on World Health Organization reference data. Motor competence was measured using the Bruininks-Oseretsky Test of Motor Competence (BOT-2). There was no significant difference in mean BMI z-score between Santal boys (0.13 ± 0.07) and girls (?0.14 ± 0.07). Healthy weight (HW) children scored higher (p < .05) in some individual motor subtests (bilateral competence, balance, running speed and agility, upper limb competence, and strength) and in total BOT-2 score (p < .05) compared with scores for underweight (UW) and overweight (OW) children. Nonlinear regression analysis showed that BMI is a significant independent predictor of motor competence (p < .01). Motor competence showed a curvilinear relationship with BMI-z-score, with the lowest point motor scores in strength and upper limb competence (p < .05) for both UW and OW children compared to HW children who scored highest. The results also indicated that gross motor skills, but not fine motor skills, were poorer among children who were UW or OW compared with HW children.     

Fluid compensation following threats to self-concept clarity

We examined defensive responses to self-clarity threats, finding that self-uncertain participants gave larger rewards to a social hero, but larger punishments to a social transgressor, than self-certain participants (Study 1). To examine whether there are individual differences in defensiveness to meaning threats, we included moderators, showing that high self-esteem individuals (HSE) thinking about self-inconsistencies gave more polarized evaluations of someone criticizing vs. complimenting their ingroup than self-consistent HSEs (Study 2). We found similar responses to a relational self-clarity threat, among individuals for whom relationships are self-defining (Study 3). Results held controlling for the impact of the self-clarity manipulations on self-esteem. This research is compatible with the meaning maintenance model, which stipulates that various meaning threats elicit fluid compensatory efforts designed to restore general feelings of meaningfulness. We discuss limitations and future directions.     

Persistence of stimulus-response compatibility effects with extended practice.

The influence of extended practice on stimulus-response (S-R) compatibility effects was investigated. Three experiments, each extending over a period of 8 sessions, were conducted. The nature and degree of compatibility was manipulated across experiments. In all experiments, a persistent effect of S-R compatibility on reaction times was observed. Thus, the lower bound for reaction times appears to be less for compatible assignments than for incompatible assignments. This persistence of S-R compatibility indicates that the initial codings used to perform a novel task continue to exert an influence on later performance.     

Differential reinforcement with and without blocking as treatment for elopement

Blocking is a frequent component of treatments for elopement. Unfortunately, blocking may not always be feasible because elopement often occurs when supervision is low or the behavior cannot be prevented. The present study evaluated the use of blocking in the treatment of elopement by using differential reinforcement of other behavior with and without blocking. In this case, results suggested that blocking may be an essential component for differential reinforcement-based treatments of elopement.