Exploring the determinants of dual goal facilitation in a rule discovery task

Wason's standard 2-4-6 task requires discovery of a single rule and leads to around 20% solutions, whereas the dual goal (DG) version requires discovery of two rules and elevates solutions to over 60%. We report an experiment that aimed to discriminate between competing accounts of DG facilitation by manipulating the degree of complementarity between the to-be-discovered rules. Results indicated that perfect rule complementarity is not essential for task success, thereby undermining a key tenet of the goal complementarity account of DG facilitation. The triple heterogeneity account received a good degree of support since more varied triple exploration was associated with facilitatory DG conditions, in line with this account's prediction that task success is associated with the creative search of the problem space. The contrast class account (an extension of Oaksford & Chater's, 1994, iterative counterfactual model) was also corroborated in that the generation of descending triples was demonstrated to be the dominant predictor of DG success. We focus our discussion on conceptual ideas relating to the way in which iterative counterfactual testing and contrast class identification may work together to provide a powerful basis for effective hypothesis testing.     

Introduction: Attaining a New Stage

The current issue of The Journal of Adult Development addresses one of the threads of adult development, namely stage and stage change. There are four major forms of adult developmental study that can be identified: positive adult development, directionless change, stasis, and decline. The first of the four forms, positive adult developmental processes, is divided into at least six areas of study: hierarchical complexity (orders, stages), knowledge, experience, expertise, wisdom, and spirituality. The topic of this special issue, stage and stage change, is therefore part of the study of positive adult developmental processes. Finally, the manner in which these topics are studied both in this special issue and elsewhere can be characterized in terms of three broad classifications (Commons & Bresette, 2000, Commons & Miller, 1998) for the acquisition of knowledge and the verification of truth in general. These classifications include analytic, experiential, and empirical means to reach truth.     

Increasing Behavioral Skills and Level of Understanding in Adults: A Brief Method Integrating Dennison's Brain Gym & #x00AE; Balance with Piaget's Reflective Processes

A single session intervention was given individually to 4 adults in order to assist them in achieving their personal goals by improving their behavioral skills for achieving the goals and their conceptual understanding of & #x201C;how to & #x201D; attain these goals. The method was based on a brain-ability analysis of understanding & #x201C;conservation & #x201D; on Jean Piaget's conservation tasks combined with Paul and Gail Dennison's Brain Gym & #x201C;balance & #x201D; procedure. My & #x201C;whole brain understanding & #x201D; model (C. A. Wolfsont, 1999, 2000) and M. L. Commons et al.'s Hierarchical Complexity Scoring System manual were used to analyze the verbal protocols (M. L. Commons et al., 1992; Commons, Danaher, & Meaney, 2000). Increases were found in the participants' conceptual understanding and in the complexity of their performance.     

A Self-Management Program for Adolescents and Children with Renal Transplantation

This paper describes the development and implementation of a self-management program designed to address noncompliance in adolescents with renal transplants. Transplantation provides the best treatment alternative for End-Stage Renal Disease (ESRD), but is a procedure that subsequently demands recipients follow a life-long medication regimen. Nonadherance to medical therapy is a serious problem for adolescents; it is one of the most common causes of chronic graft rejection in this population. To improve compliance rates for this population, a self-management program was designed: (1) to provide social support; (2) to review information about medications and transplant management; and (3) to both teach and provide transplantation patients the opportunity to practice self-management skills. Details about the program, including recruitment issues and session content, are provided. Evaluations by participants indicated that the program was effective in creating a supportive environment for both patients and their parents, and in addressing health-related concerns.     

Logic of artistic development: the case of Mondrian

In this article I show how we can give a formal representation and analysis of evolutions in artistic style, using the work of the painter Mondrian as an example. Capitalising on the idea that radical change in thought implies related changes in judgement criteria, we can in a “logic of development” specify the relations within, and between, those different sets of artistic judgement criteria that are considered typical of successive stages in artistic development. I discuss some of the problems involved in dealing with post-conventional thinking and judgement. Then I propose five major steps in Mondrian's artistic quest, showing how it is different—and how different it is—from other kinds of (e.g. moral or aesthetic) judgement development. Whereas many kinds of conceptual development lead to (various types of) criterion expansion, this form of entirely postconventional development goes in the opposite direction of a most stringent criterion reduction.     

Establishing discriminative stimulus control within generalized oddity performance,without reinforcement

In two oddity learning studies with children, subjects were reinforced for oddity (or nonoddity) responding on line-tilt or dot numerosity problems. Interposed form and color problems were not reinforced. No instructions to make oddity choices were given. In Experiment I it was found that reinforcement for oddity or nonoddity responding on tilt and numerosity problems produced the corresponding tendency toward oddity or nonoddity performance on these problems and also on the nonreinforced form and color problems. These results show a generalized oddity phenomenon similar to generalized imitation. In Experiment II a third type of nonreinforced problem was presented in this same format: compound stimuli permitting either a color or a form solution. It was found that immediate prior training with nonreinforced form problems, interpolated among the reinforced tilt and numerosity problems, led to form-oddity choices in the compound problems. Similarily, color pretraining produced color-oddity choices. These results show that selective discriminative stimulus control can be obtained in oddity learning, without reinforcement for choices on either of the two dimensions involved.     

Sometimes frequently means seldom: Context effects in the interpretation of quantitative expressions

Subjects supplied numerical definitions for five quantitative expressions embedded in two high-frequency contexts, one moderate-frequency context, two low-frequency contexts, and with no context specified. Mean definitions differed significantly across contexts and expressions with a Context-Expression interaction (p < .01). The variance in definition of an expression embedded in a context generally increased with the discrepancy between its no-context definition and the context event's estimated frequency (p < .05). Variance in the definitions of the sampled expressions gathered over diverse contexts increased with the expression's no-context definition (p < .05). Thus, the mean and variance of an expression's numerical definitions depended upon both the expression and its context.     

Inducing ordinal and cardinal representations of the first five natural numbers

The prediction that the ordinal property of natural number symbols (using these symbols to represent the terms in an ordered progression) is more easily learned than the cardinal property of natural number symbols (using these symbols to represent the manyness of collections) was examined in this experiment. Preschoolers who evidenced no proficiency with either the ordinal or cardinal properties of natural number symbols were trained to acquire these properties via simple feedback. Both properties proved to be trainable. The most important findings were that the ordinal property was much easier to train than the cardinal property, ordinal training effects were more durable across a 1-week interval than cardinal training effects, and ordinal training appeared to transfer better than cardinal training.     

Mothers’ Dreams,Children Realities: The Case of Uprooted Families from South Lebanon

In this exploratory qualitative study, 15 mothers and 18 adolescents who, as family members of the South Lebanon Army, were uprooted from that country and now living in Israel, were interviewed separately. The mothers described their image of the adaptive adult, which stressed the positive values of loyalty to the family, orientation toward the group, respect, and acceptance of hierarchy and guided their child‐rearing goals and socialization. The children shared similar attitudes about the importance of family loyalty and orientation toward the group, but differed from their mothers with regard to the issues of respect and obedience. We discussed the notion of “liminality,” to further our understanding of the families in transition and suggest how it applies to the uprooted members of South Lebanon army. We suggest that different time orientations and contextual factors influence the participating mothers’ image of the adaptive adult and the degree to which their children accept it. Implications for research and interventions are also explored.