Matching the graphical display of data to avoidance versus approach motivation increases outcome expectancies

This study is the first demonstration of the effect of motivational focus (approach vs. avoidance) on the interpretation of graphical view of personal data, specifically, weight loss progress. In two experiments, participants were randomly assigned to see the bogus weight loss data charted against either a goal or a baseline reference line. In the first experiment, we accessed participants' chronic motivational focus. In the second study, we primed motivation by exposing the participants to either a gain- or loss-focused health message. The results demonstrate that participants with either chronic or manipulated approach motivation predicted higher future weight loss in the goal reference line condition than in the baseline reference line condition. The opposite pattern was observed for participants with either chronic or manipulated avoidance motivation. The potential of matching graphical data display to personality characteristics to promote effective health management is discussed.     

Lay theories and intergroup relations: A social-developmental perspective

Abundant research suggests that the study of lay theories helps to explain intergroup relations. Building on this work as well as “interactionist” theories for understanding social behaviour from developmental and social psychology, we propose an integrative social-developmental perspective examining how lay perceivers' characteristics (e.g., age, race, psychological motivations) interact with the environments in which they are nested to impact lay theory use over time and during life transitions. Using this perspective to guide our investigation of the Protestant work ethic (PWE) and colourblind theory, we show that a single lay theory can have a socially tolerant or intolerant meaning. We review work with US children and adults (Asians, Blacks, Latinos, Whites) as well as research with Colombian children and adults (Mestizos), showing similarities and differences in perceivers' uses of PWE and the colourblind theory. Even when both meanings are prevalent in a given culture, they are not necessarily equally emphasised in all environments or for all people living in those environments, nor are they responded to in the same way by all people. We discuss the implications of these results for theorising on lay theories and offer directions for future work in this area.     

Probabilistic single function dual process theory and logic programming as approaches to non-monotonicity in human vs. artificial reasoning

In this paper, it is argued that single function dual process theory is a more credible psychological account of non-monotonicity in human conditional reasoning than recent attempts to apply logic programming (LP) approaches in artificial intelligence to these data. LP is introduced and among other critiques, it is argued that it is psychologically unrealistic in a similar way to hash coding in the classicism vs. connectionism debate. Second, it is argued that causal Bayes nets provide a framework for modelling probabilistic conditional inference in System 2 that can deal with patterns of inference LP cannot. Third, we offer some speculations on how the cognitive system may avoid problems for System 1 identified by Fodor in 1983. We conclude that while many problems remain, the probabilistic single function dual processing theory is to be preferred over LP as an account of the non-monotonicity of human reasoning.     

Can We Genetically Engineer Virtue and Deification?

In this article we ask: could we speed up the attainment of religious goals such as virtuous living or even deification through genetic engineering? After reviewing current scientific knowledge gained from genetic engineering, it is difficult to answer affirmatively. Because virtuous living is complex and difficult to define, it makes searching for relevant genes difficult. To date, such genes do not appear in the geneticist’s inventory. An additional unknown is the role of free will. Even more important, theologically, is the role of God in leading to our sanctification. This present negative conclusion, however, does not preclude possible future advances in the science of virtue.     

Differences between informants about type a,anger, and social support and the relationship with blood pressure

Abstract

In a study on the influence of different natural environments on self-perception and that of significant others, behavioral manifestations of Type A, Anger, and Social Support were assessed. It was hypothesized that due to different environmental demands, participants will be perceived as displaying differences in Type A behavior, anger, and social support at home and at work. Participants were 45 university employees, constituting a convenience sample. Assessment included Type A Structured Interview scores of participants and questionnaire scores for Type A, anger, and social support of participants who were also evaluated by their spouses and work supervisors. Other risk factors for coronary heart disease (i.e., blood pressure, smoking, previous heart condition, being sedentary, and family history) and their relationships with Type A, anger, and social support were also examined.

Participants and spouses agreed significantly on all measures, whereas participants and work supervisors agreed only on Type A behavior. Spouses' and work supervisors' evaluations of the participants' behavior were not or only marginally associated. Multiple regression analysis showed that the level of disagreement between the different informants with respect to Type A and social support were associated with elevated blood pressure. These results suggest that the perception of Vpe A behavior, anger, and social support may be situationally determined.     

The effects of constant versus varied reinforcers on preference and resistance to change

Previous research has demonstrated that factors such as reinforcer frequency, amount, and delay have similar effects on resistance to change and preference. In the present study, 4 boys with autism made choices between a constant reinforcer (one that was the same food item every trial) and a varied food reinforcer (one that varied randomly between three possible food items). For all 4 boys, varied reinforcers were preferred over constant reinforcers, and they maintained higher response rates than constant reinforcers. In addition, when a distraction (a video clip) was introduced, responding maintained by varied reinforcers was more resistant to distraction than responding maintained by constant reinforcers. Thus, the present experiment extended the generality of the relation between preference and resistance to change to variation in reinforcer quality.     

Comparing the magnitude of two fractions with common components: Which representations are used by 10- and 12-year-olds?

This study tested whether 10- and 12-year-olds who can correctly compare the magnitudes of fractions with common components access the magnitudes of the whole fractions rather than only compare the magnitudes of their components. Time for comparing two fractions was predicted by the numerical distance between the whole fractions, suggesting an access to their magnitude. In addition, we tested whether the relative magnitude of the denominator interferes with the processing of the fraction magnitude and, thus, needs to be inhibited. Response times were slower for fractions with common numerators than for fractions with common denominators, indicating an interference of the magnitude of the denominators with the selection of the larger fraction. A negative priming effect was shown for the comparison of natural numbers primed by fractions with common numerators, suggesting an inhibition of the selection of the larger denominator during the comparison of fractions. In conclusion, children who can correctly compare fractions with common components can access the magnitude of the whole fractions but remain sensitive to the interference of the relative magnitude of the denominators. This study highlights the fact that beyond the interference of natural number knowledge at the conceptual level (called the “whole number bias” by Ni & Zhou, 2005), children need to manage the interference of the magnitude of the denominators (Stroop-like effect).     

The role of negative features in joint and separate evaluation

Separate and joint evaluations differ in the manner in which attribute information is processed. We propose that negative attributes weigh more in separate compared to joint ratings. To assess the relative weights of positive and negative attributes, stimuli were employed containing mixed attribute valence, with good and poor attributes. In three experiments it was demonstrated empirically that, using such mixed valence options, the negative attributes indeed weighed more than the positive ones in separate compared to joint ratings. Direct evidence for the increased weight of negative attributes in separate ratings was provided by showing preference shifts between joint and separate ratings for options with mixed attribute valence. Copyright © 2004 John Wiley & Sons, Ltd.     

Strict Identity with No Overlap

Is standard, Kripke-style semantics for quantified modal logic compatible with the view that no individual may belong to more than one possible world? One is naturally inclined to answer in the negative, arguing that the view requires a Lewis-style, counterpart-theoretic semantics instead. Strictly speaking, however, this natural answer is wrong-headed. This note explains why.