Trajectories of Adjustment in a Brazilian Sample of Street-Involved Youth

Trajectories of adjustment were examined in a sample of street-involved youth across a 1-year period. Participants (N = 113; M_age = 14.18 years; 80.5% male, 91% non-White) were recruited in three Brazilian cities. Interviews conducted at three time points included six measures of physical and psychological adjustment. Unconditional growth models revealed linear declines over time (i.e., improved adjustment) on three indicators: health symptoms, sexual risk behaviors, and negative affect. There were no linear changes in drug use, positive affect, or life satisfaction. Conditional growth models revealed few significant effects for age or gender, but ratings of stressful life events moderated longitudinal changes in health symptoms, drug use, and negative affect. Implications for practice, policy, and theory are discussed.     

Related Multiscreening as a Strategy to Retain Audiences and Increase Persuasion During a Commercial Break

The aim of the study was to deepen our understanding of how related multiscreening affects audience memory and persuasion. A survey was administered after a live television show. The results showed that the higher the perceived relatedness of the multi-screen activity, the more persuasive the message. This effect was mediated by subsequent attention to television content, program involvement, and attention to the commercial break. The model was replicated for three different multiscreen activities: social media use, chatting, and information search. Furthermore, it was found that related multiscreening increased the likelihood of respondents staying tuned to the television after the show.     

A compressed self-index using a Ziv–Lempel dictionary

A compressed full-text self-index for a text T, of size u, is a data structure used to search for patterns P, of size m, in T, that requires reduced space, i.e. space that depends on the empirical entropy (H _k or H ₀) of T, and is, furthermore, able to reproduce any substring of T. In this paper we present a new compressed self-index able to locate the occurrences of P in O((m + occ)log u) time, where occ is the number of occurrences. The fundamental improvement over previous LZ78 based indexes is the reduction of the search time dependency on m from O(m ²) to O(m). To achieve this result we point out the main obstacle to linear time algorithms based on LZ78 data compression and expose and explore the nature of a recurrent structure in LZ-indexes, the suffix tree. We show that our method is very competitive in practice by comparing it against other state of the art compressed indexes.

How Much Time Do You Spend Online? Understanding and Improving the Accuracy of Self-Reported Measures of Internet Use

Given the importance of survey measures of online media use for communication research, it is crucial to assess and improve their quality, in particular because the increasingly fragmented and ubiquitous usage of internet complicates the accuracy of self-reported measures. This study contributes to the discussion regarding the accuracy of self-reported internet use by presenting relevant factors potentially affecting biases of self-reports and testing survey design strategies to improve accuracy. Combining automatic tracking data and survey data from the same participants (N = 690) confirmed low levels of accuracy and tendencies of over-reporting. The analysis revealed biases due to a range of factors associated with the intensity of (actual) internet usage, propensity to multitask, day of reference, and the usage of mobile devices. An anchoring technique could not be proved to reduce inaccuracies of reporting behavior. Several recommendations for research practice follow from these findings.     

Strategic Embodiment in Virtual Spaces: Exploring an on-line discussion about sexualities equality in schools

This paper analyses patterns of participation on a voluntary anonymous Web-based discussion forum, open to students and faculty in one UK university, concerning sexualities equality in schools. Analysis revealed that participants often rejected the security of anonymity and strategically embodied themselves and others (as gay, straight, parents, etc.) to provide authority and ethical grounding for certain arguments. These embodied arguments invited engagement and promoted dialogue. We found that while personal embodiments were crucial for meaningful interaction, they also brought the risk of personalizing systematic inequality and fostering a victimization discourse. In the light of this, we argue that both individual and collective perspectives are crucial for promoting sexualities equality in school.     

Understanding of the alphabetic principle through invented spelling among hearing‐impaired children learning to read and write: experimentation with a pedagogical approach

Given the problems experienced by hearing‐impaired individuals in learning the written language, a pedagogical approach was tested. The study examined the links between the development of representations of alphabetic system and the results in reading and writing of first graders. In the study, there were 31 hearing‐impaired children and 25 hearing ones. Invented spelling was measured three times during the school year. Reading and writing tests were given at the end of the year. The results obtained revealed a similarity between the learning profile of the hearing‐impaired children and that of the hearing children. It also demonstrated the importance of the work done through invented spelling, among the hearing‐impaired children. Thus, like their hearing peers, hearing‐impaired children are able to use procedures to process the written word based on the alphabetic principle, but continuous support‐implying invented spelling constantly adjusted to the progression of their representations must be provided.     

Morphological priming effects on children’s spelling

Previous research has suggested that children in the early grades of primary school do not have much awareness of morphemes. In this study, a priming paradigm was used to try to detect early signs of morphological representation of stems through a spelling task presented to Portuguese children (N = 805; age range 6–9 years). Primes shared the stem with the targets and contained well-articulated, stressed vowels; the stems of the target words and pseudo-words contained non-stressed schwa vowels, which typically result in spelling difficulties. If priming proved effective, the well-articulated vowels in the prime should result in an improvement in the spelling of the schwa vowels. Primes were presented in two conditions: in only-oral or in oral-plus-written form. Effectiveness of priming was assessed by comparison with a no-priming condition. For both words and pseudowords, there was a significant interaction between priming effects and grade. No priming effects were detected in 6- and 7-year-old children; oral-plus-written priming produced higher rates of correct vowel spelling for 8- and 9-year-olds; only-oral priming was effective in improving the vowel spelling of 9-year-olds. Thus older children can use morphological information under priming conditions when the prime and the target are not phonologically transparent but there is no evidence to suggest that younger children do so.     

Dangerous spaces: constructing and contesting sexual identities in an online discussion forum

This paper explores ways in which the research design of an anonymous online discussion forum on sexual orientation and schooling fostered the creation, maintenance and/or disruption of linguistic constructions of participant identity. The paper focuses on the presentation of self and the performance of sex–gender–sexuality within a research environment carefully designed as a ‘safe space’: an environment in which the body is conspicuous by its absence, and the construction and performance of identity relies on language alone. We explore the lines of power operating firstly between ourselves as researchers and the discussion participants, and secondly between the participants themselves, and consider the particular complexities involved in both creating and researching an online environment where simply to take part is to be at risk, and where the intervention or participation of the researchers may act both as a silencing mechanism and as a source of danger.     

The links between pedagogical competence,instructional quality,and mathematics achievement in the lower secondary classroom

Educational Studies in Mathematics - It is widely assumed that teachers play a key role in providing high-quality learning opportunities to students and fostering students’ learning. Yet it...