How Heritable are Parental Sensitivity and Limit-Setting? A Longitudinal Child-Based Twin Study on Observed Parenting

We examined the relative contribution of genetic, shared environmental and non-shared environmental factors to the covariance between parental sensitivity and limit-setting observed twice in a longitudinal study using a child-based twin design. Parental sensitivity and parental limit-setting were observed in 236 parents with each of their same-sex toddler twin children (M_age = 3.8 years; 58% monozygotic). Bivariate behavioral genetic models indicated substantial effects of similar shared environmental factors on parental sensitivity and limit-setting and on the overlap within sensitivity and limit-setting across 1 year. Moderate child-driven genetic effects were found for parental limit-setting in year 1 and across 1 year. Genetic child factors contributing to explaining the variance in limit-setting over time were the same, whereas shared environmental factors showed some overlap.     

Learning from scientific texts: personalizing the text increases transfer performance and task involvement

In an experiment with 65 high-school students, we tested the hypothesis that personalizing learning materials would increase students’ learning performance and motivation to study the learning materials. Students studied either a 915-word standard text on the anatomy and functionality of the human eye or a personalized version of the same text in which 60 definite articles (e.g., “the eye”) were replaced with 60 second-person possessive pronouns (e.g., “your eye”). Afterwards, participants answered comprehension and transfer questions. One week later, the participants were asked to restudy the text and to answer the same questions again with the aim to improve their performance. In the personalized text condition, students showed higher transfer performance, spent more time on restudying the text, and reported being more motivated than students in the standard text condition. However, only duration of restudying (not self-reported motivation) mediated the effect of personalization on transfer performance.     

The Communication Glue that Binds Employees to an Organization: A Study of Organizational Identification in Two Thai Organizations

Organizational communication scholars have paid scant attention to the motivations of people who choose careers in social service organizations. This study examined organizational identification in the context of two Thai social service organizations: government-run Community Development Department (CDD) and non-governmental Population and Community Development Association (PDA). The degree to which CDD members identified with CDD and PDA members identified with PDA was assessed by using the Organizational Identification Questionnaire constructed by George Cheney (1982 Cheney , G. (1982) . Organizational identification as process and product: A field study . Unpublished master's thesis , Purdue University . [Google Scholar]). Comparison of CDD and PDA scores on Cheney's OIQ provided findings that mirror those of previous studies of organizational identification. Specifically, the level of organizational identification among employees who work for the non-governmental privately-run social-cause organization (PDA) was significantly higher than for employees who work for the government organization (CDD). Thus, the non-governmental organization appears to be more effective than the government organization in fostering employee identification. Interestingly, a factor analysis of Thai responses to the Cheney instrument revealed three dimensions that were different from the three dimensions theorized by Cheney (1982 Cheney , G. (1982) . Organizational identification as process and product: A field study . Unpublished master's thesis , Purdue University . [Google Scholar]). While Cheney's conceptualization of identification included employees sense of membership, similarity, and loyalty to their organization, the Thai dimensions reflected life values (‘pride in membership’), social values (‘fit with organization’), and personal values (‘comfort zone’). These findings hold important implications for communication scholars who study employee motivation in non-Western organizational contexts.     

Ammonium oxalate treatment: Evaluation by μ-Raman mapping of the penetration depth in different plasters

This study is focused on the evaluation by μRaman mapping of the penetration depth achieved by ammonium oxalate treatment in different plaster specimens, a hot issue in the conservation field. The role of the carbonatic aggregate particles and the influence of the different variables of the treatment on the penetration depth and on the distribution of the newly-formed phase (whewellite) have been ascertained. Based on the results of μRaman mapping, analyses with Field Emission Scanning Electron Microscopy have been carried out in order to observe the whewellite crystals and the carbonatic aggregate particles involved in the reaction with ammonium oxalate.