The roles of handedness and stimulus asymmetry in aesthetic preference.

When some pictures are mirror reversed, aesthetic evaluations of them change dramatically. Stimulus features that may be important in contributing to this effect are: (a) location of areas of principal interest or weight in the picture space, (b) cues that suggest a direction of motion within the picture. Dextrals and inverted sinistrals preferred paintings with cues suggesting motion proceeding from left to right over their mirror-reversed versions and also preferred those with weight concentrated in the left portions of the picture space. The explanation that best fits these data is that preference is promoted when the picture content encourages attention to its rightmost portions, thus placing a majority of the picture in the left visual field where it is directly processed by the right hemisphere.     

Therapeutic Assessment With Children: Intervening With Parents “Behind the Mirror”

All the steps in the model of therapeutic assessment used with children (TA–C) are designed to involve and impact the child's parents. However, a distinctive process that parallels and accompanies the testing sessions with the child might be the most significant in helping parents shift their story of their child and family. In this process, parents are invited to observe their child's testing sessions (in an adjacent room through a live video feed, through a 1-way mirror, or in the corner of the testing room) and process the experience with the assessor (either simultaneously in the case of the 2-assessor model or after the fact in the 1-assessor model). We discuss the development and evolution of what we have come to call the “behind the mirror” method. We describe the therapeutic intent of the method and delineate 13 techniques utilized to enlist parents as active collaborators. We illustrate each technique using the case study of a 10-year-old boy where the 2-assessor model and live video feed method were used. We also provide research findings from the case study that address the parents’ experience of the assessment and their changed view of their child.     

Aging and automaticity: Evaluation of instance-based and strength-based mechanisms

Abstract

Experiments evaluated instance-based learning as a possible sole mechanism underlying development of automaticity. Age differences in extended practice lexical decision and factors that could effect age-related performance on lexical decision tasks were also examined. the first experiment was conducted to evaluate the role of stimulus-specific and strategic, task-specific learning underlying performance improvement in a trained lexical decision task. the first experiment consisted of a training and a transfer phase. the training phase assessed age-related differences on a lexical decision task where an attention response could, in principle, be developed (Search condition) and where an attention response could not develop (Nonsearch condition). the transfer phase was conducted to evaluate the role of strategic, task-specific factors on performance improvement observed in the training phase. Age-related differences in word-nonword response time differences were eliminated with practice in the nonsearch, but not the search, version of the task. Transfer tests also implicate strategic differences as a partial source of age differences in lexical decision performance. Experiment 2 was a 10-session (two-week) extended practice study which was conducted to provide a strong test of instance-based learning as a sole mechanism for automaticity. Contrary to predictions of instance theory, the Search and Nonsearch conditions converged for the young adults. Consistent with a strength-based theory of automaticity applied to cognitive aging, the conditions did not converge for older adults. the results provide further support for age differences in automaticity-as-attention training. Based on these and other results, the importance of considering varieties of automaticity in theories of cognitive aging is discussed.     

Within‐subject analysis of a prevention strategy for problem behavior

Although decades of research on functional analysis methodology have identified common contingencies that maintain problem behavior and effective interventions, relatively little research has been conducted on strategies to prevent the initial development of problem behavior. We conducted a 2‐part case study, the purposes of which were to illustrate the use of sensitivity tests as the bases for intervention (Study 1) and subsequently to assess the efficacy of a prevention strategy using a single‐subject design (Study 2). Results showed that the sensitivity tests identified establishing operations that may set the occasion for the development of problem behavior and that interventions based on differential reinforcement prevented increases in the severity of problem behavior relative to untreated and control baselines. Benefits and limitations to this individualized approach to prevention are discussed.     

When Me versus You Becomes Us versus Them: How Intergroup Competition Shapes Ingroup Psychology

Throughout evolutionary history, intergroup competition has been an influential part of social life. Although the topic has received substantial empirical attention among social psychologists, the majority of that work has focused on how ingroup and outgroup members regard one another. Only recently have researchers begun examining how intergroup rivalry changes that way that ingroup members perceive and relate to one another. New findings suggest that a variety of within‐group processes are influenced by the presence of a rival outgroup. In general, altruistic cooperation and prosocial motives increase among ingroup members when their group competes against another. The relationship between leaders and followers also shifts in response to intergroup rivalry: rather than wielding their power for selfish purposes, leaders prioritize the needs of their group. On the flip side, followers’ choice of leader changes, preferring males during times of intergroup competition but females in the absence of competition. Given the substantial impact of intergroup competition on ingroup processes, future research should continue to deepen the field’s knowledge of this topic. Additionally, the scope of research should be broadened to capture the effect of intergroup competition on ingroup dynamics, such as performance and group outcomes.     

Numerical reproduction in pigeons

Pigeons were trained to match the number of responses made during a production phase to the number of keylight flashes (2, 4, or 6) in a previous sample phase. In Experiment 1, there were 2 conditions in which the flashes were programmed to occur at a constant rate or within a constant overall duration. For both conditions, although accuracy was relatively low, responding increased linearly with flash number and coefficients of variation decreased. Positive transfer to novel numbers was obtained only when test and baseline trials had the same temporal organization, but multiple regressions revealed significant control by number independently of temporal cues. In Experiment 2, flashes were programmed to occur pseudorandomly to degrade the validity of temporal cues. Results were similar to in Experiment 1. A prototype response class model accounted for the major features of the data. According to the model, responses during the production phase are shaped into higher order units that are associated with different stimulus numbers and function as a rough category scale of numerosity.