Organizational memory and empowerment

Purpose – The aim of this paper is to test a model of the relationship between organizational memory and empowerment. The model posited that organizational memory would be related to requests to share knowledge, psychological empowerment in the workplace (meaning, competence, self-determination and impact), and organization-based self-esteem. Design/methodology/approach – The model was tested with 134 employees representing six companies using hierarchical regression analysis. Findings – Significant relationships were found between organizational memory and requests to share knowledge, empowerment, and organization-based self-esteem. Findings indicated that a positive stereotype may exist towards older workers and the frequency they are requested to share knowledge, and that a halo-type effect may operate, where knowledge of an organization's history is generalized to other knowledge domains. Research limitations/implications – Causal implications cannot be made as this was correlational research. Some of the research measures while achieving acceptable to good reliability were in an early development stage. The study utilized a convenience sample that may limit how the results can be generalized. Practical implications – The paper indicates that organizations can emphasize positive outcomes for those who are knowledge repositories and mentors. It is also important to consider possible “positive stereotypes” which may be operating when organizational members evaluate older workers as knowledge repositories and mentors. Originality/value – The paper addresses the assumptions in the human resources literature concerning the role of older workers as repositories of organizational memory and suitable mentors. The study introduces the “requests to share knowledge scale”.

Development of high performance materials based on smart elastomer nanocomposites

 The present thesis explores the fabrication of technologically relevant nanocomposites out of a few elastomers and conducting fillers like carbon nanotubes, graphene and polyaniline. The developed materials have good applications in sensors, shape memory devices and capacitors. Different characterization methods reveal the influence of filler-elastomer interactions on the various properties of the obtained nanocomposites as well.

Schooling duration rather than chronological age predicts working memory between 6 and 7 years: memory maestros study

OBJECTIVE: Low working memory (WM) is strongly linked with poor academic outcomes. WM capacity increases across childhood but how exposure to school is associated with WM development is not known. We aimed to determine extent to which chronological age and schooling duration are associated with WM at the population level. METHODS: In 2012, children in Grade 1 (the second year of formal schooling in Victoria, Australia) from 44 schools in metropolitan Melbourne were recruited. Assessments occurred over the entire school year, with schools quasi-randomly allocated to one of the 4 school terms. WM (primary outcome) was measured using 2 subtests from the computerized Automated Working Memory Assessment: Backwards Digit Recall (verbal) and Mister X (visuospatial). Linear regression was used to examine relationships of WM with time in school and age. RESULTS: Of the 1765 who provided consent, 1727 children (97.9%) had WM assessed throughout the 2012 school year. WM scores became steadily higher over the course of the year. Thus, scores were .77 and .53 SDs higher in Term 4 than Term 1 for verbal and visuospatial WM, respectively (p values for trend for both scores <.001); conclusions were unchanged when adjusted for age and potential confounders. Conversely, age associations attenuated fully once adjusted for school duration. CONCLUSIONS: Our results demonstrate, for the first time, that the developmental increases in WM are strongly associated with time spent in the classroom, above and beyond chronological age.

Development and validation of the awareness of narrative identity questionnaire (ANIQ)

The utility of a narrative approach to identity and its role in psychological functioning are becoming increasingly recognized across various fields of inquiry. The current study aimed to develop a quantitative, self-report measure of the awareness of narrative identity and how globally coherent one's autobiographical memories are perceived to be, specifically, in terms of temporal ordering, causal associations, and the perception of unifying themes. The construct validity and reliability of the Awareness of Narrative Identity Questionnaire (ANIQ) were assessed across three studies. In the first study, exploratory factor analysis of the responses of a large sample (N = 441, M [age in years] = 33.1, SD = 15.2) to an initial item pool resulted in a 20-item four-factor structure congruent with the proposed subscales, and convergent and divergent validity were established. In the second study, and with a different sample (N = 320, M [age in years] = 26.2, SD = 4.0), further evidence for the factor structure was provided through confirmatory factor analysis. Validity findings from Study 1 were replicated and extended on, and test-retest reliabilities were found to be high (r = .72-.79). Importantly, in the third study (N = 71, M [age in years] = 24.9, SD = 6.9), criterion validity was established, whereby the ANIQ subscales were demonstrated to be associated with dimensions of narrative coherence coded from written turning-point narratives. Across all studies, the internal reliabilities for the subscales were high (α = .86-.96). The ANIQ represents a valid, psychometrically sound, and novel method of assessing the awareness of narrative identity and autobiographical memory coherence.

Systematic review of sedentary behavior and cognitive development in early childhood

OBJECTIVE: To comprehensively review observational and experimental studies examining the relationship between sedentary behavior and cognitive development during early childhood (birth to 5years). METHOD: Electronic databases were searched in July, 2014 and no limits were imposed on the search. Included studies had to be peer-reviewed, published, and meet the a priori determined population (apparently healthy children aged birth to 5years), intervention (duration, types, and patterns of sedentary behavior), comparator (various durations, types, or patterns of sedentary behavior), and outcome (cognitive development) study criteria. Data extraction occurred in October and November 2014 and study quality and risk of bias were assessed in December 2014. RESULTS: A total of 37 studies, representing 14,487 participants from nine different countries were included. Thirty-one studies used observational study designs and six studies used experimental study designs. Across study designs, increased or higher screen time (most commonly assessed as television viewing (TV)), reading, child-specific TV content, and adult-specific TV content had detrimental (negative) associations with cognitive development outcomes for 38%, 0%, 8%, and 25% of associations reported, respectively, and beneficial (positive) associations with cognitive development outcomes for 6%, 60%, 13%, and 3% of associations reported, respectively. Ten studies were moderate quality and 27 studies were weak quality. CONCLUSIONS: The type of sedentary behavior, such as TV versus reading, may have different impacts on cognitive development in early childhood. Future research with reliable and valid tools and adequate sample sizes that examine multiple cognitive domains (e.g., language, spatial cognition, executive function, memory) are needed. Registration no. CRD42014010004.