Judging and actualizing intrapersonal and interpersonal affordances

The current study investigated the perception of intrapersonal, interpersonal, and tool-based grasping possibilities. In Experiment 1, participants judged whether they would grasp planks of wood-presented in ascending, descending, and random orders of length-using one hand (1H), two hands (2H), or with a tool that extended their reach (TH). In Experiment 2, participants physically grasped the planks using 1H, 2H, or TH. In Experiments 3 and 4, the choice of TH was replaced with a choice of grasping the planks with another person (2P). The results showed that presentation order influenced the participants' behavior differently in the judgment and action experiments. The same behavioral patterns, however, were observed when participants switched between 1H and 2H, 2H and TH, and 2H and 2P grasping. The point at which participants judged they would switch between the different modes of grasping, as well as the point at which participants physically switched between the grasping modes, occurred at similar action-scaled ratios. The equivalence of perceiving intrapersonal and interpersonal affordances is discussed.     

The Role of Tentativeness in Perceiving Architecture and Art: A Far-from-Equilibrium Ecological Perspective

Two experiments examined performance in collision avoidance situations. In both experiments participants were asked to initiate a discrete maneuver to avoid a collision at the last possible moment. The affordances of the situations were varied as a function of vehicle dynamics and the functional consequences associated with responding too late or too early. The results were examined in the context of a 2-dimensional functional state space with dimensions associated with optical angle and optical expansion rate. The patterns of performance showed that the actions were consistent with decision rules that could be specified in terms of linear functions of the two optical variables. In most cases, performance at early stages of learning suggested that people were using an Expansion Rate Criterion. With practice, people would tune to a decision rule that was appropriate for the specific vehicle dynamics tested. The results are discussed in relation to the role of three factors in shaping ultimate performance: (a) tasks constraints (i.e., affordances), (b) information constraints (i.e., optical structure), and (c) experience (i.e., learning).     

A psychological predictor of elders' driving performance: social‐comparisons on the road

Older individuals often believe they can drive better than their contemporaries. This belief is an example of downward social‐comparisons; they can be self‐enhancing tools that lead to beneficial outcomes. As predicted, we found that drivers who engaged in downward social‐comparisons were significantly less likely to have adverse driving events over time, after controlling for relevant factors (p = .02). This effect was particularly strong among women, who tend to experience more negative driving stereotypes (p = .01). The study was based on 897 interviews of 117 elder drivers, aged 70–89 years, over 2 years. Our findings suggest that interventions to reduce adverse driving events among elders could benefit from including a psychological component.     

Developing cohesion in court-mandated group treatment of male spouse abusers

Cohesion in group treatment of spouse abusers plays an important and often overlooked role. Involuntary abuser groups can benefit from cohesion, but due to their unique structure, cohesion may develop differently than in voluntary psychotherapy groups. Initially, abuser groups may develop premature levels of cohesion that can make group members unwilling to express conflict, develop intimacy, and take responsibility for their actions. Understanding the abuser personality and the unique characteristics of involuntary abuser groups can shed light on why cohesion develops the way it does and the importance it plays in abuser groups. Developing effective interventions that target premature cohesion can help the group members express conflict, develop intimacy, and take responsibility for their actions, thus bringing about therapeutic levels of cohesion.     

Problem structuring heuristics in strategic decision making

In a laboratory experiment using 73 undergraduate students as subjects, comparisons were made between the use of a convergent, divergent, and limited heuristic for problem structuring under different stress levels. It was found that subjects using either the convergent or the divergent heuristic had lower satisfaction with the process and lower confidence in their results than those using the limited heuristic. There were no differences in the time used or the quality of results between subjects using the convergent and divergent heuristic. Stress reduced the quantity of results when using either the convergent or divergent heuristic. The subjects may have preferred the limited heuristic because the use of the convergent or divergent heuristic used more time, thus more energy, and resulted in more alternatives, thus increased uncertainty. It is also possible that the subjects preferred their future career plans to be more ambiguous than the use of either the convergent or divergent heuristic allowed.     

The informativeness and frequency of presentation of a social stimulus as determinants of its efficacy as a reinforcer

It was demonstrated that variations in the informativeness of a social stimulus place important limitations on the generality of the proposition that deprivation heightens, while satiation lowers, responsiveness to a social stimulus. Using 60 children 5 to 6 years of age as subjects, a social stimulus (“good”) was presented at either a high or a low frequency in one of three information-value contexts (high, medium, or low). Immediately following the exposure treatment the same social stimulus was employed as a reinforcer of nonpreferred responses in a two-choice discrimination learning task. The findings indicated that the heightened efficacy of deprivation relative to satiation only held for low information value; when initial information value was high the subsequent efficacy of a social stimulus was enhanced by its initial recurrent usage. Trend analyses revealed that the effects of variations in information value were strongest within the high-frequency-of-praise treatment. Possible mechanisms underlying the significant Information Value × Frequency interaction were discussed.     

A complex dynamic systems approach to lasting positive change: The Synergistic Change Model

This paper argues that psychological and social functioning is fundamentally complex, and that this complexity is critical to understanding how lasting positive changes can be achieved. Principles from complex systems theory are integrated into an empirical positive psychological framework to propose a domain-based systems model of positive change called the Synergistic Change Model. This model proposes that enduring positive change depends on the formation of mutually supportive interactions across multiple domains of psychological and social functioning. The paper uses the model to explore three types of response to intervention – relapse, spill-over, and synergy – which have been supported in the existing positive psychology literature. Three practical intervention strategies arising from the model are outlined to inform the design of future positive interventions. The model challenges reductionistic approaches to positive change and offers several approaches to embrace the complexities of lasting positive change in future theory and research.