Prove it! The Burden of Proof Game in Science vs. Pseudoscience Disputes

The concept of burden of proof is used in a wide range of discourses, from philosophy to law, science, skepticism, and even in everyday reasoning. This paper provides an analysis of the proper deployment of burden of proof, focusing in particular on skeptical discussions of pseudoscience and the paranormal, where burden of proof assignments are most poignant and relatively clear-cut. We argue that burden of proof is often misapplied or used as a mere rhetorical gambit, with little appreciation of the underlying principles. The paper elaborates on an important distinction between evidential and prudential varieties of burdens of proof, which is cashed out in terms of Bayesian probabilities and error management theory. Finally, we explore the relationship between burden of proof and several (alleged) informal logical fallacies. This allows us to get a firmer grip on the concept and its applications in different domains, and also to clear up some confusions with regard to when exactly some fallacies (ad hominem, ad ignorantiam, and petitio principii) may or may not occur.     

The role of daily need crafting in daily fluctuations in adolescents’ need-based and affective experiences

Based on self-determination theory, this diary study examined associations between adolescents’ daily need crafting and daily fluctuations in their need-based and affective experiences. We also examined the role of daily perceived autonomy-supportive parenting in adolescents’ daily need-crafting. Adolescents (N?=?159; M_age?=?15.56; 62% female) filled out a diary for seven consecutive days. Multilevel path analyses indicated that need crafting varied on a day-to-day basis, with daily need crafting relating positively to daily positive affect and negatively to negative affect. The benefits of daily need crafting were accounted for by higher daily need satisfaction and lower need frustration. Further, on days adolescents perceived more parental autonomy support, they reported more need satisfaction and less need frustration, an effect that was partially due to higher need crafting that day. Overall, the results suggest that need crafting represents a critical pro-active skill, with resulting benefits for adolescents’ daily need-based experiences and well-being.

     

Contemporary theories of 1/f noise in motor control

1/f noise has been discovered in a number of time series collected in psychological and behavioral experiments. This ubiquitous phenomenon has been ignored for a long time and classical models were not designed for accounting for these long-range correlations. The aim of this paper is to present and discuss contrasted theoretical perspectives on 1/f noise, in order to provide a comprehensive overview of current debates in this domain. In a first part, we propose a formal definition of the phenomenon of 1/f noise, and we present some commonly used methods for measuring long-range correlations in time series. In a second part, we develop a theoretical position that considers 1/f noise as the hallmark of system complexity. From this point of view, 1/f noise emerges from the coordination of the many elements that compose the system. In a third part, we present a theoretical counterpoint suggesting that 1/f noise could emerge from localized sources within the system. In conclusion, we try to draw some lines of reasoning for going beyond the opposition between these two approaches.     

Psychosoziale Versorgung von Krebspatienten

Objectives

The aim of this study was to determine rates of psychooncological care for cancer inpatients and outpatients under routine conditions in a large University hospital. The percentage of patients who received care was analyzed and compared with self-rated and expert rated supportive care needs.

Methods

The percentage of inpatients who received psychooncological care was calculated by comparing the number of cancer patients treated at the hospital as documented by the local tumor registry (n=1,979) with the number of patients treated by a psychooncologist in that hospital as documented by the hospital??s psychooncological consultation liaison service. The percentage of outpatients who received psychooncological care was calculated by comparing the number of incident cancer cases as documented by the local tumor registry (n=5,886) with the number of patients who received at least one consultation at the local tumor counseling centre. Supportive care needs were estimated by analyzing data of a prospective patient survey in the same hospital (n=1,803) using the Hospital Anxiety and Depression Scale and single items to determine social burden and the wish for emotional support.

Results

The results showed that 11% of inpatients and outpatients (n=234 and n=638, respectively) received psychooncological care. Social care needs were prevalent in 37% and psychological care needs in 52% of the patients during the stay in hospital and in 42% (social and psychological) 6 months later. Of the patients 41% expressed the need to see a social worker and 29% to see a psychologist. Large differences were found between patients with different tumor entities.

Conclusion

Psychooncological care delivered to cancer patients under routine conditions was below the actual rate required as estimated by screening instruments and as expressed by the patients.     

The influence of dichotical fusion on the redundant signals effect,localization performance,and the mismatch negativity

In two experiments, each including a simple reaction time (RT) task, a localization task, and a passive oddball paradigm, the physical similarity between two dichotically presented auditory stimuli was manipulated. In both experiments, a redundant signals effect (RSE), high localization performance, and a reliable mismatch negativity (MMN) was observed for largely differing stimuli, suggesting that these are coded separately in auditory memory. In contrast, no RSE and a localization rate close to chance level (experiment 1) or at chance (experiment 2) were observed for stimuli differing to a lesser degree. Crucially, for such stimuli a small (experiment 1) or no (experiment 2) MMN were observed. These MMN results indicate that such stimuli tend to fuse into a single percept and that this fusion occurs rather early within information processing.     

Mindfulness and dream quality: the inverse relationship between mindfulness and negative dream affect

The aim of the study was to examine the relationship of mindfulness to the emotional quality of dreaming. In our questionnaire-based study, comprising the data of 587 undergraduate students we examined the association between trait anxiety, perceived stress, trait mindfulness, negative dream affect and dream anxiety. Our results indicate that mindfulness is inversely related to disturbed dreaming and predicts less severe dream disturbances after controlling for trait anxiety. Moreover, the results of the applied hierarchical regression analysis suggest that mindfulness is associated with reduced dream anxiety by moderating the extent of waking anxiety. Our findings extend previous research relating mindfulness, emotional regulation and sleep quality to the domain of dream research. We suggest that mindfulness is a possible protective factor against dream disturbances.     

Timing the moment of impact in fast human movements

The reported resolution of timing the moment of impact in fast human movements differs widely depending on the task. Surprisingly, better timing is reported for the demanding task of batting a ball than for the much simpler task of tapping in synchrony with two hands. We wondered whether this is because a sizeable part of timing variability arises from misjudging the distance in the direction of one's own movement, so that moving faster (as the bat does when moving toward a ball) improves timing. We found that moving faster does indeed improve timing in both the above-mentioned tasks. After removing the proposed contribution of misjudging the distance in the direction of one's own movement, we estimated that the remaining standard deviation in timing is just over 6ms for both tasks.     

Temperature dependency in motor skill learning

The present study investigated the role of temperature as a contextual condition for motor skill learning. Precision grip task training occurred while forearm cutaneous temperature was either heated (40-45 °C) or cooled (10-15 °C). At test, temperature was either reinstated or changed. Performance was comparable between training conditions while at test, temperature changes decreased accuracy, especially after hot training conditions. After cold training, temperature change deficits were only evident when concurrent force feedback was presented. These findings are the first evidence of localized temperature dependency in motor skill learning in humans. Results are not entirely accounted for by a context-dependent memory explanation and appear to represent an interaction of neuromuscular and sensory processes with the temperature present during training and test.     

Daily fluctuations in perfectionism dimensions and their relation to eating disorder symptoms

Multidimensional perfectionism has been shown to play an important role in eating disorders (EDs). However, research examining this relation has primarily focused on relatively stable inter-individual differences between persons, thereby failing to examine how these variables are associated within individuals on a daily basis. This study examines how daily fluctuations in Personal Standards (PS) perfectionism and Evaluative Concerns (EC) perfectionism relate to each other and to fluctuations in ED symptoms. Adolescents (N = 275) completed questionnaires each evening during seven consecutive days. Multilevel modeling showed significant day-to-day fluctuations in PS and EC perfectionism, and showed that both dimensions are intertwined in the day. Among females, fluctuations in EC perfectionism co-varied with fluctuations in ED symptoms.