Scope of linguistic influence: does a classifier system alter object concepts?

Whether and to what extent conceptual structure is universal is of great importance for understanding the nature of human concepts. Two major factors that might affect concepts are language and culture. The authors investigated whether these 2 factors affect concepts of everyday objects in any significant ways. Specifically, they tested (a) whether the system of grammatical categorization by classifiers influenced the conceptual structure of speakers of classifier languages, and (b) whether Westerners organized object concepts around taxonomic relations whereas Easterners organized them around thematic relations, as proposed by R. E. Nisbett (2003). The relative importance of 3 types of relations--taxonomic, thematic, and classifier--for Chinese and German speakers was tested using a range of tasks, including categorization, similarity judgment, property induction, and fast-speed word-picture matching. Some support for linguistic relativity as well as for the cultural-specific cognition proposal was found in some tasks, but these effects were miniscule compared with the importance of taxonomic and thematic relations for both language-culture groups. The authors conclude that the global structure of everyday object concepts is strikingly similar across different cultures and languages.     

Body ownership affects visual perception of object size by rescaling the visual representation of external space

Size perception is most often explained by a combination of cues derived from the visual system. However, this traditional cue approach neglects the role of the observer’s body beyond mere visual comparison. In a previous study, we used a full-body illusion to show that objects appear larger and farther away when participants experience a small artificial body as their own and that objects appear smaller and closer when they assume ownership of a large artificial body (“Barbie-doll illusion”; van der Hoort, Guterstam, & Ehrsson, PLoS ONE, 6(5), e20195, 2011). The first aim of the present study was to test the hypothesis that this own-body-size effect is distinct from the role of the seen body as a direct familiar-size cue. To this end, we developed a novel setup that allowed for occlusion of the artificial body during the presentation of test objects. Our results demonstrate that the feeling of ownership of an artificial body can alter the perceived sizes of objects without the need for a visible body. Second, we demonstrate that fixation shifts do not contribute to the own-body-size effect. Third, we show that the effect exists in both peri-personal space and distant extra-personal space. Finally, through a meta-analysis, we demonstrate that the own-body-size effect is independent of and adds to the classical visual familiar-size cue effect. Our results suggest that, by changing body size, the entire spatial layout rescales and new objects are now perceived according to this rescaling, without the need to see the body.     

A Danish version of the Sensation Seeking Scale and its relation to a broad spectrum of behavioral and psychological characteristics

The primary purpose of the present study was to evaluate the internal consistency and construct validity of the Danish translation of Zuckerman's Sensation Seeking Scale (SSS). The secondary aim was to extend the range of psychological variables and behaviors that have been related to sensation seeking. The sample consisted of 691 subjects (363 males and 328 females) with a mean age of 31.7 years. The internal consistency of the scales was evaluated by coefficient alpha and intercorrelations among the five scales derived from the SSS were computed. Information on other variables was collected through standardized tests as well as questionnaires and interviews developed especially for this study. The results showed that the Danish SSS is a psychometrically sound instrument and revealed the relationship between sensation seeking and a broad spectrum of psychological traits and behaviors: socioeconomic status, academic achievement, intelligence, personality, smoking, alcohol and drug use, sexuality, driving and public transportation violations, and leisure time activities. Thus, this study confirmed and expanded the findings of many previous studies, while the results supported the validity of the Danish SSS and corroborated the usefulness of the concept of sensation seeking.     

Providing worked examples for learning multiple principles

Worked examples support learning. However, if they introduce easy-to-confuse concepts or principles, specific ways of providing worked examples may influence their effectiveness. Multiple worked examples can be introduced blocked (i.e., several for the same principle) or interleaved (i.e., switching between principles), and can be sequentially or simultaneously presented. Crossing these two factors provides four ways of presenting worked examples: blocked/sequential, interleaved/sequential, blocked/simultaneous, and interleaved/simultaneous. In an experiment with university students (N = 174), we investigated how these two factors influence the acquisition of procedural and conceptual knowledge about different, but closely related (thus, easy-to-confuse) stochastic principles. Additionally, we assessed the ability of students to discriminate between principles with verification tasks. Simultaneous presentation benefitted procedural knowledge whereas, interleaved presentation benefitted conceptual knowledge. No significant differences were found for verification tasks. The results suggest that it is worthwhile to adapt the presentation of the worked examples to the learning goals.     

Measuring Happiness and Overall Life Satisfaction: A Danish Survey Experiment on the Impact of Language and Translation Problems

The paper addresses language and translation problems in the most typical measures of happiness and overall life satisfaction in international surveys using an experimental design. In the experiment, randomly selected groups of Danish university students answered questionnaires in English and Danish, respectively. We found significant differences in the answers on both indices. As such, it was confirmed that the term “happy” is not the same in English and Danish. In Danish the word is similar to the German word “glücklich” which seems to refer to something stronger than just being “happy”. Perhaps more surprisingly, we also found a significant difference between the answers on “overall life satisfaction”, indicating that the answers given in Danish are too high as compared to the English ones. The differences are large enough to argue that such simple tests should be conducted before ranking countries in terms of these two well-established indices of subjective well-being.     

Personalized medicine: evidence of normativity in its quantitative definition of health

Systems medicine, which is based on computational modelling of biological systems, is emerging as an increasingly prominent part of the personalized medicine movement. It is often promoted as ‘P4 medicine’ (predictive, preventive, personalized, and participatory). In this article, we test promises made by some of its proponents that systems medicine will be able to develop a scientific, quantitative metric for wellness that will eliminate the purported vagueness, ambiguity, and incompleteness—that is, normativity—of previous health definitions. We do so by examining the most concrete and relevant evidence for such a metric available: a patent that describes a systems medicine method for assessing health and disease. We find that although systems medicine is promoted as heralding an era of transformative scientific objectivity, its definition of health seems at present still normatively based. As such, we argue that it will be open to influence from various stakeholders and that its purported objectivity may conceal important scientific, philosophical, and political issues. We also argue that this is an example of a general trend within biomedicine to create overly hopeful visions and expectations for the future.     

Parity and Comparability—a Concern Regarding Chang’s Chaining Argument

According to Ruth Chang the three standard positive value relations: “better than”, “worse than” and “equally good” do not fully exhaust the conceptual space for positive value relations. According to her, there is room for a fourth positive value relation, which she calls “parity”. Her argument for parity comes in three parts. First, she argues that there are items that are not related by the standard three value relations. Second, that these items are not incomparable, and third, that the phenomena she has focused on are not due to the vagueness of the comparative predicates (i.e., that it is indeterminate which of the standard value relations that holds). This paper focuses on the second part of the argument and an objection is presented. By assuming the Small Unidimensional Difference Principle, which is a key premise for the second part of the argument, Chang’s argument could be accused of begging the question. More so, by assuming this principle, the space for incomparability gets severely limited. If these worries are justified, then Chang’s argument for parity as a fourth form of comparability is unsuccessful.     

Maternal distress during pregnancy and language development in preschool age: A population-based cohort study

Recent studies have emphasized the importance of the prenatal period for children's cognitive development. Prenatal exposure to psychological distress has been identified as one potential agent affecting neurodevelopment, although research in this area has been marked by some contradictory findings and methodological limitations. This study aimed to investigate the effect of maternal distress during pregnancy on language development of preschool children. This study was based on the Norwegian Mother and Child Cohort Study conducted at the Norwegian Institute of Public Health. The sample was composed of 34,089 women and their children. We assessed the role of maternal prenatal distress on child language over and above that of premature low birth weight (PLBW) status and postnatal maternal distress. Fear of giving birth had a negative impact on language outcome at age three over and above the effect of PLBW status and postnatal maternal distress. However, this effect was of minimal magnitude. Moreover, when examining whether differences in language skills between siblings were associated with differences in experienced levels of prenatal stress across pregnancies (sibling fixed-effects models), no significant effects were found. Our study suggests that prenatal distress within moderate limits does not seem to have an independent impact on child language performance in the preschool years and emphasizes the importance of considering the contextual role played by more stable maternal and family characteristics.