A meta‐analysis of the effects of acute alcohol intoxication on witness recall

There is widespread belief in the legal system that alcohol impairs witness testimony. Nevertheless, most laboratory studies examining the effects of alcohol on witness testimony suggest that alcohol may affect the number of correct but not incorrect details recalled. However, it is difficult to draw conclusions because sample sizes, testing paradigms, and recall measures vary between individual studies. We conducted a meta‐analysis to address this issue. We found alcohol intoxication had a significant and moderate sized effect on the number of correct details recalled (g = 0.40). The effect of alcohol on the number of incorrect details recalled was not significant. Further, the effect of alcohol on the recall of correct details was significantly moderated by multiple factors like intoxication level, the retention interval length between encoding and recall, and the types of questions asked (i.e., free recall vs. cued recall). We discuss the applied implications of the results.     

Communicative depth: soundings from developmental psychopathology

My aim in this paper is to consider what it means to engage and communicate with another person. I do so by adopting the approach of developmental psychopathology, and compare and contrast the structure of communication that is manifest by typically developing infants on the one hand, and by children and adolescents with autism on the other. I highlight the pivotal significance of human beings' propensity to share or otherwise co-ordinate experiences with others, and analyze the conditions that make sharing and other forms of intersubjective relatedness possible. Often, discussions that oppose cognitive, affective, and motivational accounts of autism are pursued in an inappropriate frame of reference: at root, we need to understand the nature and developmental implications of affected children's difficulties in achieving communicative depth. In the pursuit of such understanding, we may gain insights into typically developing infants' capacities for intersubjective engagement.     

Mental fatigue and the control of cognitive processes: effects on perseveration and planning

We tested whether behavioural manifestations of mental fatigue may be linked to compromised executive control, which refers to the ability to regulate perceptual and motor processes for goal-directed behaviour. In complex tasks, compromised executive control may become manifest as decreased flexibility and sub-optimal planning. In the study we use the Wisconsin Card Sorting Test (WCST) and the Tower of London (TOL), which respectively measure flexibility (e.g., perseverative errors) and planning. A simple memory task was used as a control measure. Fatigue was induced through working for 2 h on cognitively demanding tasks. The results showed that compared to a non-fatigued group, fatigued participants displayed more perseveration on the WCST and showed prolonged planning time on the TOL. Fatigue did not affect performance on the simple memory task. These findings indicate compromised executive control under fatigue, which may explain the typical errors and sub-optimal performance that are often found in fatigued people.     

Do lonely days invade the nights? Potential social modulation of sleep efficiency

Loneliness predicts morbidity and mortality from broad-based causes, but the reasons for this effect remain unclear. Few differences in traditional health behaviors (e.g., smoking, exercise, nutrition) have been found to differentiate lonely and nonlonely individuals. We present evidence that a prototypic restorative behavior—sleep—does make such a differentiation, not through differences in time in bed or in sleep duration, but through differences in efficacy: In the study we report here, lonely individuals evinced poorer sleep efficiency and more time awake after sleep onset than nonlonely individuals. These results, which were observed in controlled laboratory conditions and were found to generalize to the home, suggest that lonely individuals may be less resilient than nonlonely individuals in part because they sleep more poorly. These results also raise the possibility that social factors such as loneliness not only may influence the selection of health behaviors but also may modulate the salubrity of restorative behaviors.     

From Games to Giving: Social Value Orientation Predicts Donations to Noble Causes

The central purpose of the present research is to examine the ability of social value orientation (i.e., prosocial, individualistic, and competitive orientation), as measured with methods rooted in game theory (i.e., decomposed games), to predict real-life prosocial behavior. Consistent with hypotheses, results revealed that individual differences in social value orientation are predictive of various donations. Relative to individualists and competitors, prosocials reported to engage in a greater number of donations, especially donations to organizations aimed at helping the poor and the ill. Results are discussed in terms of theory and methodology regarding the individual differences in social value orientation, as well as in terms of societal implications for enhancing donations to noble causes.     

Measuring consciousness in dreams: The lucidity and consciousness in dreams scale

In this article, we present results from an interdisciplinary research project aimed at assessing consciousness in dreams. For this purpose, we compared lucid dreams with normal non-lucid dreams from REM sleep. Both lucid and non-lucid dreams are an important contrast condition for theories of waking consciousness, giving valuable insights into the structure of conscious experience and its neural correlates during sleep. However, the precise differences between lucid and non-lucid dreams remain poorly understood. The construction of the Lucidity and Consciousness in Dreams scale (LuCiD) was based on theoretical considerations and empirical observations. Exploratory factor analysis of the data from the first survey identified eight factors that were validated in a second survey using confirmatory factor analysis: INSIGHT, CONTROL, THOUGHT, REALISM, MEMORY, DISSOCIATION, NEGATIVE EMOTION, and POSITIVE EMOTION. While all factors are involved in dream consciousness, realism and negative emotion do not differentiate between lucid and non-lucid dreams, suggesting that lucid insight is separable from both bizarreness in dreams and a change in the subjectively experienced realism of the dream.     

Attention Demands in Balance Recovery following Lower Limb Amputation

The attention demands in balance control after damage to the peripheral sensorimotor system were studied in 12 persons with a recent lower limb amputation. The interference of an arithmetic task with two postural tasks of different complexity (quiet standing and active weight shifting) was examined several times during their rehabilitation while the subjects stood on a force platform. Control data were obtained from healthy subjects. For both postural tasks, persons with amputation performed worse than controls. Quiet standing, a relatively simple task, revealed clear dual-task interference only in the amputation group. Evidence was found for a reduction in dual-task interference as rehabilitation progressed. In contrast, voluntary (feedback-controlled) weight shifting, a more complex task, revealed an equal amount of dual-task interference in persons with amputation and in controls, without changes in interference over the period of rehabilitation. The results indicate that attentional mechanisms may be involved in postural control, depending on both the novelty and complexity of the task. Moreover, a reduction in attention demands of quiet standing may reflect a central adaptation of the postural organization to the peripheral sensorimotor impairments caused by lower limb amputation.     

Compositional Natural Language Semantics using Independence Friendly Logic or Dependence Logic

Independence Friendly Logic, introduced by Hintikka, is a logic in which a quantifier can be marked for being independent of other quantifiers. Dependence logic, introduced by Väänänen, is a logic with the complementary approach: for a quantifier it can be indicated on which quantifiers it depends. These logics are claimed to be useful for many phenomena, for instance natural language semantics. In this contribution we will compare these two logics by investigating their application in a compositional analysis of the de dicto - de re ambiguity in natural language. It will be argued that Independence Friendly logic is suitable, whereas Dependence Logic is not.     

Opinion Change in Time of War

Two hundred ninety-five college students were tested to determine the effects of specified variables of self-appraisal and task appraisal on achievement, self-assessment of achievement, and expended effort. Primary results were as follows: (a) The academic self-concept was found to contribute significantly to achievement on a specific task. Partial correlation between the academic self-concept and task achievement with intelligence controlled was .39 (p ≤ .05). A nonsignificant partial correlation between task confidence and task achievement with intelligence controlled was .16 (considered high enough to warrant further study). (b) Approximately two-thirds of the variance in self-assessment of achievement was found to be due to one's perceived achievement on a specific task. The variables of self-appraisal (i. e., academic self-concept and self-confidence) were not found to affect self-assessment of achievement, nor the variables of task appraisal (i. e., task confidence and task interest). Expended effort appears to have had a small part in the total variance of self-assessment of achievement. (c) Expended effort was found to be significantly related to task interest, but variables of self-appraisal did not contribute significantly to expended effort.