Juliane Hellhammer, Ali‐Reza Waladkhani, Torsten Hero and Claudia Buss
Phosphatidylserine (PS) extracted from both bovine cortex and soya beans has been previously reported to positively affect cognitive functioning, mood, and the capacity to cope…
Abstract
Purpose
Phosphatidylserine (PS) extracted from both bovine cortex and soya beans has been previously reported to positively affect cognitive functioning, mood, and the capacity to cope with stress. The present paper aims to investigate whether the daily intake of phospholipid concentrate (PL) rich in phosphatidylserine (PS) and sphingomyelin (SM) has similar beneficial effects on working memory, allostastic load and the acute stress response.
Design/methodology/approach
A total of 46 healthy men (average 41.5 years) received either placebo or 13.5 g per day PL over a three‐week period. On the 21st day of PL intake, subjects' working memory performance and their psychological and endocrine responses to the Trier Social Stress Test (TSST) were tested.
Findings
Compared to placebo‐exposed individuals, there was a tendency for shorter reaction times in the working memory task, suggesting better performance in PL‐treated subjects. The two treatment groups did not significantly differ in their endocrine stress response. However, PL‐treated subjects with a higher stress load showed a blunted psychological stress response.
Practical implications
Results of the present study show beneficial effects of PL intake on cognitive performance. Under acute stress, benefits of PL may only be visible in chronically stressed subjects.
Originality/value
This paper provides new information for practitioners, academics and food supplement industries interested in possible beneficial effects of a milk phospholipid product on memory and mental stress.
Details
Keywords
Katarina Lagerström, Roger Schweizer and Johan Jakobsson
The purpose of this paper is to contribute to the literature discussing the internationalization of research and development (R&D) among multinational companies by proposing a…
Abstract
Purpose
The purpose of this paper is to contribute to the literature discussing the internationalization of research and development (R&D) among multinational companies by proposing a process description to capture the development of local R&D capabilities in subsidiaries.
Design/methodology/approach
The authors build the conceptualization not only on the prevailing literature on resource management, subsidiary evolution and subsidiary initiatives, but also on empirical observations.
Findings
A process in four phases is distinguished to describe the evolution of R&D capabilities in subsidiaries: the identification of an opportunity in the host country that triggers the establishment of local R&D capabilities; the gathering of support – from the host country and from MNC internally – and resources; the bundling of the resources to build capabilities; and finally the leveraging of the capabilities.
Research limitations/implications
By offering a conceptualization of the process through which subsidiaries build R&D capabilities, the authors contribute to the literature on R&D internationalization that hitherto has neglected the central role played by subsidiaries and the fact that a subsidiary needs to develop and manage resources and capabilities to change its R&D related role and/or mandate within the MNC.
Originality/value
By providing a process perspective on MNCs internationalization of R&D focussing on the development and management of R&D capabilities at subsidiaries, the paper adds a more dynamic dimension to the previously rather static view on R&D internationalization.