The development of numerosity estimation: Evidence for a linear number representation early in life

Several studies investigating the development of approximate number representations used the number-to-position task and reported evidence for a shift from a logarithmic to a linear representation of numerical magnitude with increasing age. However, this interpretation as well as the number-to-position method itself has been questioned recently. The current study tested 5- and 8-year-old children on a newly established numerosity production task to examine developmental changes in number representations and to test the idea of a representational shift. Modelling of the children's numerical estimations revealed that responses of the 8-year-old children approximate a simple positive linear relation between estimated and actual numbers. Interestingly, however, the estimations of the 5-year-old children were best described by a bilinear model reflecting a relatively accurate linear representation of small numbers and no apparent magnitude knowledge for large numbers. Taken together, our findings provide no support for a shift of mental representations from a logarithmic to a linear metric but rather suggest that the range of number words which are appropriately conceptualised and represented by linear analogue magnitude codes expands during development.     

Exploring Factor Model Parameters across Continuous Variables with Local Structural Equation Models

Using an empirical data set, we investigated variation in factor model parameters across a continuous moderator variable and demonstrated three modeling approaches: multiple-group mean and covariance structure (MGMCS) analyses, local structural equation modeling (LSEM), and moderated factor analysis (MFA). We focused on how to study variation in factor model parameters as a function of continuous variables such as age, socioeconomic status, ability levels, acculturation, and so forth. Specifically, we formalized the LSEM approach in detail as compared with previous work and investigated its statistical properties with an analytical derivation and a simulation study. We also provide code for the easy implementation of LSEM. The illustration of methods was based on cross-sectional cognitive ability data from individuals ranging in age from 4 to 23 years. Variations in factor loadings across age were examined with regard to the age differentiation hypothesis. LSEM and MFA converged with respect to the conclusions. When there was a broad age range within groups and varying relations between the indicator variables and the common factor across age, MGMCS produced distorted parameter estimates. We discuss the pros of LSEM compared with MFA and recommend using the two tools as complementary approaches for investigating moderation in factor model parameters.     

The Effects of a Female Role Model on Academic Performance and Persistence of Women in STEM Courses

Women are more likely to leave science, technology, engineering, and mathematics compared to men, in part because they lack similar role models such as peers, teaching assistants, and instructors. We examined the effect of a brief, scalable online intervention that consisted of a letter from a female role model who normalized concerns about belonging, presented time spent on academics as an investment, and exemplified overcoming challenges on academic performance and persistence. The intervention was implemented in introductory psychology (Study 1, N?=?258) and chemistry (Study 2, N?=?68) courses. Relative to the control group, the intervention group had higher grades and lower failing and withdrawal rates.     

Application of the rubber hand illusion paradigm: comparison between upper and lower limbs

The “rubber hand illusion (RHI)” is a perceptual illusion, which allows the integration of artificial limbs into the body representation of a person by means of combined visual and tactile stimulation. The illusion has been frequently replicated but always concerning the upper limbs. The present study verified an analog illusion that can be called the “rubber foot illusion” (RFI). In a conjoint experiment using both a rubber hand and a rubber foot, brushstrokes were applied to the respective real and rubber limb placed alongside the real one. However, only the artificial limb’s handling was visible. The brushstrokes were given either synchronously, with a delay of ±0.5 s, or without tactile stimulation of the real limb. Questionnaire data and the proprioceptive drift towards the rubber limb (determined by calling on the subjects to show where they locate their unseen limb) defined the illusion strength. Results revealed that the illusion was induced in both limbs with comparable strength, but only in the synchronous condition.     

Neue Entwicklungen in der allgemeinen psychoanalytischen Psychosomatik

Psychoanalysis has played a pivotal role for developments in psychosomatics both on a conceptual and an institutionalization level. In contemporary psychosomatics there is a focus on conceptual models that concentrate on psychic structure, the processing of emotions and embodiment. Alongside these, the questions arise on how psychoanalytic views on psychosomatic disorders in a more classical sense will develop further and their relevance for current developments. This article gives a brief historical overview of some central concepts in psychoanalytic psychosomatics and shows how these are resumed in what can be distinguished as six aspects of contemporary psychoanalytic psychosomatics. This is demonstrated by a brief case report. The article closes with some proposals for the clinical practice.     

Self‐Compassion as a Facet of Neuroticism? A Reply to the Comments of Neff,Tóth‐Király,and Colosimo (2018)

In this paper, we respond to comments by Neff et al. (2018) made about our finding that the negative dimensions of self‐compassion were redundant with facets of neuroticism (rs ≥ 0.85; Pfattheicher et al., 2017) and not incrementally valid. We first provide epistemological guidance for establishing psychological constructs, namely, three hurdles that new constructs must pass: theoretically and empirically sound measurement, discriminant validity, and incremental validity—and then apply these guidelines to the self‐compassion scale. We then outline that the critique of Neff et al. (2018) is contestable. We question their decisions concerning data‐analytic methods that help them to circumvent instead of passing the outlined hurdles. In a reanalysis of the data provided by Neff et al. (2018), we point to several conceptual and psychometric problems and conclude that self‐compassion does not overcome the outlined hurdles. Instead, we show that our initial critique of the self‐compassion scale holds and that its dimensions are best considered facets of neuroticism. © 2018 European Association of Personality Psychology     

Hemispheric asymmetry for global and local processing: language is less important than one might think

There have been consistent findings of hemispheric asymmetry in global/local processing, in both neurological patients and the neurologically normal. However, with one exception, these studies have used purely linguistic stimuli (letters made up of letters). The present study investigates lateral asymmetry for processing of global/local objects with less "linguistic" properties (e.g., letters made up of shapes, and shapes made up of letters) using a change detection paradigm. In each case the classic pattern of hemispheric asymmetry was found. These results are discussed in the context of the relative importance of hemispheric asymmetry for both global/local and linguistic information.