Word skipping in reading: On the interplay of linguistic and visual factors

An eye movement experiment is reported in which target words of two and four letters were presented in sentences that strongly raised the expectation of a particular word. There were three possible conditions: The expected word was present in the sentence, an unexpected word of the same length was present, or an unexpected word of a different length was present (all continuations were acceptable, but the latter two were difficult to predict). Our first purpose was to test one of the core assumptions of the Extended Optimal Viewing Position model of eye guidance in reading (Brysbaert & Vitu, 1998). This model states that word skipping is primarily a function of the length of the upcoming word. It leads to the prediction that an unpredicted two‐letter word will be skipped more often than a predicted four‐letter word, which is indeed what we observed. Our second aim was to determine if we could obtain an interaction between context predictability and parafoveal word length, by looking at what happens when the length of the parafoveal word does not agree with the length of the expected word. No such interaction was observed although the effects of both word length and predictability were substantial. These findings are interpreted as evidence for the hypothesis that visual and language‐related factors independently affect word skipping.     

Color perception involves color representations firstly at a semantic level and then at a lexical level

Studies and models have suggested that color perception first involves access to semantic representations of color. This result leads to two questions: (1) is knowledge able to influence the perception of color when associated with a color? and (2) can the perception of color really involve only semantic representations? We developed an experiment where participants have to discriminate the color of a patch (yellow vs. green). The target patch is preceded either by a black-and-white line drawing or by a word representing a natural object associated with the same or a different color (banana vs. frog). We expected a priming effect for pictures because, with a 350-ms SOA, they only involve access to semantic representations of color, whereas words seem only elicit an access to lexical representations. As expected, we found a priming effect for pictures, but also for words. Moreover, we found a general slowdown of response times in the word-prime-condition suggesting the need of an additional processing step to produce priming. In a second experiment, we manipulated the SOA in order to preclude a semantic access in the word-prime-condition that could explain the additional step of processing. We also found a priming effect, suggesting that interaction with perception occurs at a lexical level and the additional step occurs at a color perception level. In the discussion, we develop a new model of color perception assuming that color perception involves access to semantic representations and then access to lexical representations.     

Quantifying the Strength of General Factors in Psychopathology: A Comparison of CFA with Maximum Likelihood Estimation,BSEM, and ESEM/EFA Bifactor Approaches

Whether or not importance should be placed on an all-encompassing general factor of psychopathology (or p factor) in classifying, researching, diagnosing, and treating psychiatric disorders depends (among other issues) on the extent to which comorbidity is symptom-general rather than staying largely within the confines of narrower transdiagnostic factors such as internalizing and externalizing. In this study, we compared three methods of estimating p factor strength. We compared omega hierarchical and explained common variance calculated from confirmatory factor analysis (CFA) bifactor models with maximum likelihood (ML) estimation, from exploratory structural equation modeling/exploratory factor analysis models with a bifactor rotation, and from Bayesian structural equation modeling (BSEM) bifactor models. Our simulation results suggested that BSEM with small variance priors on secondary loadings might be the preferred option. However, CFA with ML also performed well provided secondary loadings were modeled. We provide two empirical examples of applying the three methodologies using a normative sample of youth (z-proso, n = 1,286) and a university counseling sample (n = 359).     

Juggling with bubbles in cylindrical ferrofluid foams

Monodisperse foams in long cylinders exhibit ordered spiral structures. We have made ferrofluid foams of this kind and find that they can be manipulated in a variety of ways by an external magnetic field. Effects include morphological changes, twisting of structures and size control in the bubble formation process. This offers a promising technique for the efficient transport, switching and combining of samples in fluidic networks, possibly on the microfluidic scale.     

Heidegger,Wittgenstein and St Paul on the Last Judgement: On the Roots and Significance of ‘The Theoretical Attitude’

The article examines Heidegger's lectures on St Paul and provides, in particular, a reading of their discussion of the remarks on the parousia in the letters to the Thessalonians. This reading serves a number of purposes. First, it makes clear how Heidegger's appropriation of a certain ‘anti-theological’ tradition helped first give a sense to his notion of ‘the theoretical attitude’, a problematic notion that plays a central role in his mature early philosophy. Second, it illustrates, and thus helps to refine the identity of, a particular kind of recognizably ‘phenomenological’ reflection that attempts to distance itself precisely from that ‘attitude’; and third, it points to a new perspective on some central and problematic themes in Heidegger's better known early writings and, in particular, their discussion of assertions. An identification of some remarkable similarities between Heidegger's remarks on the Last Judgement and remarks of Wittgenstein's help identify this perspective.     

The suppression of Modus Ponens as a case of pragmatic preconditional reasoning

The suppression of the Modus Ponens inference is described as a loss of confidence in the conclusion C of an argument “If A1 then C; If A2 then C; A1” where A2 is a requirement for C to happen. It is hypothesised that this loss of confidence is due to the derivation of the conversational implicature “there is a chance that A2 might not be satisfied”, and that different syntactic introductions of the requirement A2 (e.g., “If C then A2”) will lead to various frequencies in the derivation of this implicature, according to previous studies in the field of causal explanation. An experiment is conducted, whose results support those claims. Results are discussed in the light of the Mental Logic and Mental Model theories, as well as in the light of the pragmatic approach to uncertain reasoning.     

HIV risk after release from prison: a pilot case-control study in Canada,France, Ivory Coast and South Africa

This study aimed to assess HIV knowledge, risk perception and risk behaviour of ex-offenders at risk of new infection and to compare them with the general population. A case-control interview study was conducted with conveniently sampled ex-offenders and persons with no history of incarceration in four countries (Canada, France, Ivory Coast, South Africa). The total sample included 232 participants with a mean age of 33.9 years (SD=9.8 years). Results indicate various high HIV risk behaviours including multiple sexual partners, irregular sexual partner, and commercial sexual partner. Other risk factors were unprotected sex at last intercourse with a regular partner, with an irregular partner and with a commercial sexual partner. A history of incarceration did not differentiate risk for infection. Younger age, coming from the Ivory Coast, and higher HIV risk perception were found to be associated with HIV risk behaviour. Prevention efforts should focus on education, promotion of safe sex and substance abuse treatment.     

Using E-Z Reader to examine the concurrent development of eye-movement control and reading skill

Compared to skilled adult readers, children typically make more fixations that are longer in duration, shorter saccades, and more regressions, thus reading more slowly (Blythe & Joseph, 2011). Recent attempts to understand the reasons for these differences have discovered some similarities (e.g., children and adults target their saccades similarly; Joseph, Liversedge, Blythe, White, & Rayner, 2009) and some differences (e.g., children’s fixation durations are more affected by lexical variables; Blythe, Liversedge, Joseph, White, & Rayner, 2009) that have yet to be explained. In this article, the E-Z Reader model of eye-movement control in reading (Reichle, 2011 and Reichle et al., 1998) is used to simulate various eye-movement phenomena in adults vs. children in order to evaluate hypotheses about the concurrent development of reading skill and eye-movement behavior. These simulations suggest that the primary difference between children and adults is their rate of lexical processing, and that different rates of (post-lexical) language processing may also contribute to some phenomena (e.g., children’s slower detection of semantic anomalies; Joseph et al., 2008). The theoretical implications of this hypothesis are discussed, including possible alternative accounts of these developmental changes, how reading skill and eye movements change across the entire lifespan (e.g., college-aged vs. older readers), and individual differences in reading ability.     

Visual-memory search: An integrative perspective

A large, single-frame, visual-memory search experiment is reported in which memory and display loads of 1, 2, and 4 alphanumeric characters were factorially combined. In addition to the usual Consistent Mapping and Varied Mapping conditions, the experiment also involved a Categorical Varied Mapping condition in which different sets of stimuli switched roles as targets and distractors over trials. The stimuli used in these various mapping conditions were either digits, letters, or digits and letters. Analyses of the response time means obtained early and late in training suggest that the presence of categorical distinctions among the stimuli is the most important determinant of search efficiency. Comparison of the load effects on the response time means and on their standard deviations revealed a fairly constant ratio throughout the experimental conditions, which suggests that similar search processes may have been involved. A feature-based comparison model is indeed shown to account for the response time means obtained after extensive training under just about all training conditions, as well as for the ratios of load effects on means and standard deviations. According to the model, improvement in search efficiency results from a reduction in the number of features considered. The model's performance questions the necessity to postulate qualitative differences between controlled and automatic processing, while the experiment forces a reassessment of the importance of the consistent mapping that underlies dual-process theories.