The influence of color on the perception of scene gist

In 3 experiments the authors used a new contextual bias paradigm to explore how quickly information is extracted from a scene to activate gist, whether color contributes to this activation, and how color contributes, if it does. Participants were shown a brief presentation of a scene followed by the name of a target object. The target object could be consistent or inconsistent with scene gist but was never actually present in the scene. Scene gist activation was operationalized as the degree to which participants respond "yes" to consistent versus inconsistent objects, reflecting a response bias produced by scene gist. Experiment 1 demonstrated that scene gist is activated after a 42-ms exposure and that the strength of the activation increases with longer presentation durations. Experiments 2 and 3 explored the contribution of color to the activation of scene gist. The results revealed that color has an influence across a wide variety of scenes and is directly associated with scene gist.     

Terror Management Theory: Implications for Understanding Prejudice,Stereotyping, Intergroup Conflict,and Political Attitudes

Terror management theory posits that to maintain psychological security despite the awareness of personal mortality, humans must maintain faith in cultural worldviews. These worldviews provide ways for humans to believe they are significant enduring beings in a world of meaning rather than mere animals fated only to obliteration upon death. We review basic support for terror management theory and research exploring the implications of terror management theory for understanding prejudice, stereotyping, intergroup conflict, and political attitudes. This research shows that when the psychological need to defend these worldviews is heightened by reminders of death (mortality salience), prejudice, stereotyping, and support for charismatic leaders and aggression against outgroups is increased. Terror management concerns also lead targets of prejudice to disidentify with their ingroup and confirm negative stereotypes of their group. We conclude by considering the implications of terror management theory and research for the alleviation of prejudice and intergroup conflict.     

Bimanual response grouping in dual-task paradigms

In three experiments we measured response time (RT) and peak force (PF) to investigate the grouping of left- and right-hand key press responses in a dual-task paradigm involving two independent go/no-go tasks. Within each task, a go stimulus within one of two modalities (i.e., visual versus auditory) required a response by one hand. In Experiment 1 with simultaneous go stimuli in the two tasks, responses appeared to be grouped in approximately 75-80% of trials, compared with nearly 100% grouping in a single-task condition requiring bimanual responses to the onset of any stimulus in either modality. In Experiment 2 with stimulus onset asynchronies (SOAs) of 0-400 ms between the two go stimuli, response grouping clearly declined as SOA increased, although some grouping was still evident even at the longest SOA. The same pattern was observed in Experiment 3 with the same range of SOAs but unpredictable stimulus order, suggesting that grouping is not strongly dependent on prior knowledge of the likely response order. These results emphasize the pervasiveness of response grouping in bimanual dual-task RT paradigms and provide useful clues as to its nature.     

The path or the goal? Decision vs. information focus in biased information seeking after preliminary decisions

Research on the phenomenon of selective exposure to information demonstrates that after preliminary or final decisions, people show a preference for supporting rather than conflicting information (confirmation bias). In this article, we examine conditions that increase or decrease distortions in the search for information. We report on four experiments indicating that the confirmation bias is influenced by whether people focus on their decision or on the presented pieces of information during the information search. Focusing on the decision, for example, because a reward for a correct decision is promised or simply because participants repeatedly think of it, increases the confirmation bias. On the other hand, if participants focus on the available pieces of information because they have to invest money in order to search for information or because they have to evaluate the individual pieces of information, the confirmation bias decreases. Implications for theoretical understanding and interventions for decision-making situations are discussed.     

Evidence for the DTA hypothesis II: Threatening self-esteem increases death-thought accessibility

Three studies assessed the impact of self-esteem threat on death-thought accessibility (DTA). Increased DTA resulted from three distinct types of self-esteem threat. Studies 1 and 2 employed negative feedback procedures in which participants were told that they scored below average on an intelligence test (Study 1), or that their personality was incongruent for their desired career path (Study 2). In Study 3, participants were led to believe that they would give an ill prepared speech in front of their peers. In Studies 1 and 2 DTA was assessed via reaction times on a lexical decision task, while Study 3 employed a word-fragment completion task. Study 3 demonstrated the DTA buffering effect of fortifying self-esteem via self-affirmation. Discussion focused on general implications for TMT, self-esteem, and mental health.     

The developmental psychometrics of big five self-reports: acquiescence, factor structure, coherence, and differentiation from ages 10 to 20

How do youths' personality reports differ from those of adults? To identify the year-by-year timing of developmental trends from late childhood (age 10) to early adulthood (age 20), the authors examined Big Five self-report data from a large and diverse Internet sample. At younger ages within this range, there were large individual differences in acquiescent responding, and acquiescence variability had pronounced effects on psychometric characteristics. Beyond the effects of acquiescence, self-reports generally became more coherent within domains, and better differentiated across domains, at older ages. Importantly, however, different Big Five domains showed different developmental trends. Extraversion showed especially pronounced age gains in coherence but no gains in differentiation. In contrast, Agreeableness and Conscientiousness showed large age gains in differentiation but only trivial gains in coherence. Neuroticism and Openness showed moderate gains in both coherence and differentiation. Comparisons of items that were relatively easy versus difficult to comprehend indicated that these patterns were not simply due to verbal comprehension. These findings have important implications for the study of personality characteristics and other psychological attributes in childhood and adolescence.     

Methylphenidate amplifies long-term plasticity in the hippocampus via noradrenergic mechanisms

Methylphenidate treatment is used for Attention Deficit Hyperactivity Disorder and can improve learning and memory. Previously, improvements were considered a by-product of increased attention; however, we hypothesize that methylphenidate directly alters mechanisms underlying learning and memory, and therefore examined its effects on hippocampal long-term potentiation and long-term depression. Methylphenidate enhanced both mechanisms in the absence of presynaptic changes and in a noradrenalin beta-receptor-dependent manner. These findings can explain both the improved learning and memory and decreased learning selectivity found with methylphenidate treatment and constitute the first demonstration of direct actions of methylphenidate on mechanisms implicated in cognition.     

Challenges To Human Equality

According to liberal egalitarian morality, all human beings are one another's moral equals. Nonhuman animals, by contrast, are not considered to be our moral equals. This essay considers two challenges to the liberal egalitarian view. One is the ``separation problem,' which is the challenge to identify a morally significant intrinsic difference between all human beings and all nonhuman animals. The other is the “equality problem,” which is to explain how all human beings can be morally equal when there are some human beings whose psychological capacities (and, in some cases, their psychological potentials as well) are no higher than those of certain nonhuman animals. The focus throughout is on the ethics of killing but the arguments are of broader relevance. The essay reaches a skeptical conclusion about our ability to meet these challenges.     

Microswitch-based programs for persons with multiple disabilities: an overview of some recent developments

Persons with multiple disabilities are often unable to interact with their environment due to their limited response repertoire. Microswitch programs are designed to help them control environmental events, generally preferred stimulation, through simple (feasible) responses. To make microswitch programs a more widely usable and relevant resource for intervention with these persons, a number of new developments were pursued in recent years. This paper examines three of those developments as specifically addressed in our research activity, namely, (a) assessment of new, nontypical responses and matching microswitches, (b) fostering of multiple responses and exercise of choice, and (c) targeting of habilitative and clinical (therapeutic) objectives. The encouraging outcomes of these developments are reviewed in relation to their potentially wide implications for daily practice and the need of additional developments in the area.     

Cognitive‐Behavioral Tasks Accomplished in a Person‐Centered Relational Framework

The authors propose a person‐centered relational framework in which C. R. Rogers's (1957) core conditions remain the primary catalyst of therapeutic change and cognitive‐behavioral work is accomplished while adhering to person‐centered principles. Important ideas asserted include the following: Cognitive‐behavioral tasks occur naturally within the person‐centered approach, knowledge of cognitive‐behavioral theory can increase counselor empathy, and cognitive‐behavioral techniques can be carefully applied within a person‐centered relational framework. Finally, the person‐centered relational framework with other theories is addressed.