Retrospective duration estimation of public events

In three experiments, we investigated subjects' retrospective estimation of the duration of publicly reported events such as, for example, the Falkland's war. In Experiment 1, duration estimates were found to be positively correlated with event knowledge, in keeping with Ornstein's (1969) model of duration estimation. Event duration was, however, generally underestimated, suggesting that the relationship between event knowledge and estimated duration might reflect an increase in estimation accuracy. Other results of Experiment 1 were consistent with this interpretation and suggested that the duration estimates might be largely reconstructed. In Experiment 2, duration estimates of specific events and general categories of events were found to be highly correlated, and the subjects in Experiment 3 indicated that they used knowledge of the general characteristic of different types of events to estimate event duration. Overall, reallife duration estimates appear to be based on a combination of specific event information and knowledge derived about that category of event.     

Reflection-impulsivity and academic attainment in emotionally disturbed children

Sixty-five emotionally disturbed children were administered the Matching Familiar Figures Test (MFF) and standard achievement tests. Significant correlations were obtained between MFF errors and achievement and Mental Age (MA) but not between MFF latencies and achievement and MA. Fifteen impulsive and fifteen reflective children, matched on MA and not differing on Chronological Age (CA), did not differ on their levels of academic achievement. However, the reflective group was found to be two grades above the impulsive group in actual grade placement. Results are discussed in terms of possible behavioral differences and their consequences for the individual.     

Theory of mind and wisdom: The development of different forms of perspective-taking in late adulthood

How does perspective-taking develop over the lifespan? This question has been investigated in two separate research traditions, dealing with theory of mind (ToM) and wisdom, respectively. Operating in almost complete isolation from each other, and using rather different conceptual approaches, these two traditions have produced seemingly contradictory results: While perspective-taking has been consistently found to decline in old age in ToM research, studies on wisdom have mostly found that perspective-taking remains constant or sometimes even increases in later adulthood. This study sought to integrate these two lines of research and clarify the seemingly contradictory patterns of findings by systematically testing for both forms of perspective-taking and their potential cognitive foundations. The results revealed (1) the dissociation in developmental patterns between ToM perspective-taking (declining with age) and wisdom-related perspective-taking (no decline with age) also held – documented here for the first time – in one and the same sample of younger versus older adults; (2) this dissociation was of limited generality: It did not (or only partly) hold once the material of the two types of tasks was more closely matched; and (3) the divergent developmental patterns of ToM perspective-taking versus wisdom-related perspective-taking could be accounted for to some degree by the fact that only TOM perspective-taking was related to developmental changes in fluid intelligence.     

The source of adult age differences in event-based prospective memory: a multinomial modeling approach

Event-based prospective memory involves remembering to perform an action in response to a particular future event. Normal younger and older adults performed event-based prospective memory tasks in 2 experiments. The authors applied a formal multinomial processing tree model of prospective memory (Smith & Bayen, 2004) to disentangle age differences in the prospective component (remembering that you have to do something) and the retrospective component (remembering when to perform the action) of prospective memory performance. The modeling results, as well as more traditional analyses, indicate age differences in the resource-demanding prospective component.     

Attentional biases for threatening faces in children: vigilant and avoidant processes

The authors examined the processing of threat-related information in childhood anxiety with the emotional Stroop task and the dot probe task. In study 1, a nonclinical sample of 112 pupils (mean age = 9 years) performed pictorial versions of both tasks. For each task, an index indicating a bias for threat processing was computed. Positive correlations were found between these indices and anxiety. When compared with the original emotional Stroop index, the absolute value of the emotional Stroop index was a better predictor of anxiety. It was possible to replicate this result in study 2 with 80 pupils (mean age = 8.6 years). Results are discussed with regard to vigilance and avoidance as basic mechanisms underlying performance on the tasks.     

Psychobiology of altered states of consciousness

The article reviews the current knowledge regarding altered states of consciousness (ASC) (a) occurring spontaneously, (b) evoked by physical and physiological stimulation, (c) induced by psychological means, and (d) caused by diseases. The emphasis is laid on psychological and neurobiological approaches. The phenomenological analysis of the multiple ASC resulted in 4 dimensions by which they can be characterized: activation, awareness span, self-awareness, and sensory dynamics. The neurophysiological approach revealed that the different states of consciousness are mainly brought about by a compromised brain structure, transient changes in brain dynamics (disconnectivity), and neurochemical and metabolic processes. Besides these severe alterations, environmental stimuli, mental practices, and techniques of self-control can also temporarily alter brain functioning and conscious experience.     

Mindfulness or expectancy? The label of mindfulness leads to expectancy effects

The increasing popularity of mindfulness practices has seen an accompanying growth in research that includes the development of several self-report mindfulness measures. However, while caution has been recommended in the use of these self-reports, there has been little direct assessment of their susceptibility to expectancy effects. This research aimed at understanding whether expectancy effects exist for self-reported mindfulness measures (Study 1; n = 60), and how expectancy effects might manifest in relation to positive and negative expectancy (Study 2; n = 60). The first study manipulated whether (i) the task (jigsaws) was labelled as “mindfulness,” and (ii) whether “authentic” mindfulness instructions were given. Given any increases in self-reported mindfulness might potentially occur due to engaging in the mindful and attentionally demanding task, the second study manipulated whether the introduction placed mindfulness in a positive or negative context. A pre-/post-test design was employed using the Five Facet Mindfulness Questionnaire and Applied Mindfulness Process Scale self-report measures for mindfulness and the Perceived Stress Scale for well-being. The findings revealed expectancy effects for simply using the term mindfulness and that the direction of effects could be manipulated. This research suggests that researchers need to be cautious in evaluating self-reports of mindfulness practice due to expectancy effects, especially in the context of brief interventions without objective measures.