Hope versus optimism in Singaporean adolescents: Contributions to depression and life satisfaction

This study explored the discriminant validity of optimism and hope in accounting for unique variance in depression and life satisfaction for 334 secondary school students from Singapore. Correlational analysis showed that optimism and hope were significantly correlated with each other. Hierarchical multiple regression findings indicated that both optimism and hope significantly predicted depression and life satisfaction even after controlling for hope and optimism, respectively. However, the incremental unique variance accounted for in depression by optimism is 6% more than that accounted for by hope in terms of R² Change values. Simultaneous multiple regression analyses using the subscale scores found that only agency, optimism, and pessimism contributed uniquely to the variance in depression and life satisfaction. Implications and limitations of these findings are discussed.     

Measurement of visual memory span by means of the recall of dot-in-matrix patterns

A method for the study of visual memory span is described. The results of two dot-in-matrix experiments indicated that the patterns of larger matrix size were more difficult to recall, but the effect of visual angle was not significant. Visual memory span could be represented by the number of dota in the 5 by 6 or 6 by 6 pattern that a subject perfectly recalled with a probability of .5, since the proportion of recalled patterns was a monotonie decreasing function of the number of dots. This method can be used in group experiments without consideration of the differences in visual angles caused by the locations of subjects. The selection of appropriate presentation times and the distinction between verbal and visual memory spans are discussed.     

The influence of complexes on implicit learning

A century ago, Jung looked into the unconscious through complexes by using word association tests. Jung wrote, 'modern psychology with its investigation of complexes has opened up a psychic taboo area riddled with hopes and fears', and complexes remain an unexplored taboo area of research. In the present study, we have investigated the influence of complexes on unconscious cognitive processing, in particular on implicit learning. We have found that complexes shown to disturb conscious cognitive processing in fact enhanced the attention of the subjects and their performance on an implicit learning task. These results suggest that complexes are not just abstractions, but have various actual influences on both conscious and unconscious processing.     

Multidimensional sequence learning in patients with focal basal ganglia lesions

Parkinson's patients have been found to be impaired in learning movement sequences. In the current study, patients with unilateral basal ganglia lesions due to stroke were tested on a serial reaction time task in which responses were based on the spatial location of each stimulus. The spatial locations either followed a fixed sequence or were selected at random, with learning operationalized as the difference in reaction time between these two conditions. In addition, three response-to-stimulus intervals were used, and these either followed a fixed sequence or were randomized. Compared to control participants, the patients showed normal learning of the spatial and temporal sequences, as well as normal cross-dimensional learning. This was true for performance with either the contralesional or ipsilesional hand. Sequence learning was not correlated with maximum tapping rate, a simple measure of motor impairment. These results raise questions concerning the use of Parkinson's disease as a model for studying basal ganglia dysfunction.     

The development of moral orientation in elementary school children

While much research has focused on issues of justice in children's moral learning, little is known about children's use of other moral orientations in solving moral problems. A study was conducted with children drawn from Grades 1, 3, and 5 (total n=54). Fables were used as the moral dilemmas, since previous research had shown that they could be solved from either a justice or a care orientation. In individual interviews, children were asked how they would solve the problems in the fables, whether there was a different solution, and what the best solution (justice or care) would be. They were then asked to explain the logic of the solution they offered. The results from the study showed that (a) children tended to adopt a care orientation as their first solution and to consider it the best solution, (b) there were no differences between first- and third-grade boys and girls, (c) solutions involving violence and tricks appeared among the fifth-grade boys only, and (d) the ability to explain the logic of both orientations to the fables problem was correlated with children's use of abstract reasoning skills on beginning formal operational tasks and with perspective-taking ability.We would like to thank the principal and teachers of the Thetford Elementary School, Thetford, Vermont, for their participation in this project. We are also grateful to Elizabeth Hoffman, Dan Parish, Kathleen Lambert, and Heather Caldwell for their help with data collection, to Carol Kottmeier and Mary Varanese for their coding of the Selman data, and to Ann Huebner, Kay Johnston, Sharry Langdale, Michael W. Pratt, and Lawrence Walker for their comments on the paper. Support for the research was provided by Rockefeller Center at Dartmouth College.     

Individual and group advice taking in judgmental forecasting: Is group forecasting superior to individual forecasting?

We examined how individuals and groups behave in making judgmental forecasts when they are given external forecast advice. We compare individual and group advice-taking behavior under different conditions: (a) when advice quality is fixed, (b) when advice quality is randomly varied, and (c) when there is feedback on advice quality or not. Participants in Study 1 received fixed advice of either reasonable or unreasonable quality while making their decisions. Participants in Study 2 randomly received both reasonable and unreasonable advice. We found in both studies that groups feel more confident than individuals. This greater confidence decreased the groups' reliance on advice. We also found that groups are better than individuals at discerning the quality of advice. In the group treatment, the group's reliance on advice increased according to the degree of disagreement with the initial decisions of the group members. In Study 3, participants randomly received both reasonable and unreasonable advice, and in addition, they received feedback on actual realizations that enabled them to learn about the quality of advice. In the presence of feedback on random advice quality, groups are no longer less receptive to advice than individuals; with feedback, both individuals and groups discount advice more than they do without feedback. Nevertheless, groups are still better than individuals at discerning the quality of advice. We conclude that group forecasting is better than individual forecasting across various conditions that we investigate except when advice quality is known to be consistently reliable.     

The forgotten individual: diagrammatic reasoning in mathematics

Parallelism has been drawn between modes of representation and problem-sloving processes: Diagrams are more useful for brainstorming while symbolic representation is more welcomed in a formal proof. The paper gets to the root of this clear-cut dualistic picture and argues that the strength of diagrammatic reasoning in the brainstorming process does not have to be abandoned at the stage of proof, but instead should be appreciated and could be preserved in mathematical proofs.     

Impulsivity in internet addiction: a comparison with pathological gambling

Internet addiction has been considered to be associated with poor impulse control. The aim of this study is to compare the trait impulsivity of those suffering from Internet addiction with that of individuals suffering from pathological gambling. Twenty-seven patients diagnosed with Internet addiction (age: 24.78±4.37 years), 27 patients diagnosed with pathological gambling (age: 25.67±3.97 years), and 27 healthy controls (age: 25.33±2.79 years) were enrolled in this study. All patients were men seeking treatment. Trait impulsivity and the severity of the Internet addiction and pathological gambling were measured by the Barratt Impulsiveness Scale-11, the Young's Internet Addiction Test, and the South Oaks Gambling Screen, respectively. The Beck Depression Inventory and the Beck Anxiety Inventory were also administered to all subjects. Our results show that those suffering from Internet addiction showed increased levels of trait impulsivity which were comparable to those of patients diagnosed with pathological gambling. Additionally, the severity of Internet addiction was positively correlated with the level of trait impulsivity in patients with Internet addiction. These results state that Internet addiction can be conceptualized as an impulse control disorder and that trait impulsivity is a marker for vulnerability to Internet addiction.     

Team Proactivity as a Linking Mechanism between Team Creative Efficacy,Transformational Leadership,and Risk‐Taking Norms and Team Creative Performance

Despite the growing body of research on creativity in team contexts, very few attempts have been made to explore the team‐level antecedents and the mediating processes of team creative performance on the basis of a theoretical framework. To address this gap, drawing on Paulus and Dzindolet's (2008) group creativity model, this study proposed team creative efficacy, transformational leadership, and risk‐taking norms as antecedents of team creative performance and team proactivity as an intervening mechanism between these relationships. The results of team‐level regression analyses conducted on the leaders and members of 103 Korean work teams showed that team creative efficacy and risk‐taking norms were positively associated with team creative performance. Furthermore, the relationships between team creative efficacy and team creative performance and between risk‐taking norms and team creative performance were mediated by team proactivity. These findings offer new insights regarding the antecedents and the mediator of creative performance in team contexts and important implications for theory and practice.     

Rediscovering the Positive Psychology of Sport Participation: Happiness in a Ski Resort Context

Interrelated functions of the three orientations to happiness were examined by a cross-sectional survey, in the context of a ski resort experience. Accordingly, a conceptual framework of pleasure, flow, and involvement influencing satisfaction was established. Utilizing structural equation modeling, the conceptual framework was tested by analyzing data collected from 279 participants who enjoyed skiing and/or snowboarding. Results from bootstrap test indicated that direct and total effects from flow had the highest predictive power on satisfaction. In contrast, pleasure showed higher explanatory power on subjective experiences of flow and meaning, and influenced satisfaction only by indirect effects through those elements. Together, these findings support the research model synthesizing the behavioral constructs of sport participation with subjective well-being perspectives. Moreover, the expanded model in a sporting context further evidences the functional roles of the orientations to happiness by results consistent with extant literature of positive psychology. Roles of embodiments of orientations to happiness in an action-based exercise and its implications are further discussed.