Child-to-Parent Violence – Der Blinde Fleck in der Forschung zur familiären Gewalt? Ein Systematic Review / Child-to-Parent Violence –The Blind Spot in Research on Family Violence? A Systematic Review

Child-to-Parent Violence -The Blind Spot in Research on Family Violence? A Systematic Review Child-to-parent violence (CPV) is a phenomenon that has received little attention in the German scientific community. With this paper, the authors present the international state of research in the context of a systematic review. By means of a search a dataset of 317 scientific publications for the period 2012-2022 was identified at August 2022. After applying the inclusion and exclusion criteria, 14 studies were finally defined and analyzed in detail. Based on the analysis, the following variables are highlighted as outcomes: Forms of CPV, prevalence, age and gender of individuals performing CPV, risk and protective factors, the direction of CPV within family constellations as well as external conditioning factors of CPV.The results show that there are some concrete findings in research regarding these variables, particularly in the area of risk and protective factors. An initial systematization of violent behaviour in the context of CPV can also be derived fromthe current state of research. At the same time, however, there are still clear gaps in research, e. g. in terms of prevalence, which is mainly due to very different definitions of "violence". This applies both with regard to the international state of research, but especially with regard to the situation in German-speaking countries.

Mentalizing partially mediates the association between attachment insecurity and global stress in preservice teachers

Objective

Considering the fact that the teaching profession is a highly stressful occupation and that teachers' ineffective coping strategies contribute to higher levels of stress, the objective of the present study was to investigate whether insecure attachment is related to global stress experiences in preservice student teachers. Furthermore, it was examined whether this link is mediated by the preservice teachers' mentalizing-the capacity to perceive and consider one's own and others' behavior based on intentional mental states.

Methods

Data of this cross-sectional study came from 202 preservice student teachers using self-report instruments (attachment: Expectation in Close Relationships; mentalizing: Reflective Functioning Questionnaire; stress: Trier Inventory of Chronic Stress). The hypotheses were tested using structural equation modelling.

Results

Anxious attachment was positively related to stress and impairments in mentalizing. In addition, the link between attachment-related anxiety and stress was partially mediated by mentalizing. Avoidant attachment was not associated with stress or mentalizing.

Discussion

Results indicate that anxious attachment is associated with higher perceived stress in preservice student teachers. Consequently, attachment-related anxiety may be a risk factor which, in turn, may foster perceptions of higher global stress experiences.

Conclusion

Additional research needs to focus on exploring the link between attachment insecurity and global stress experiences among preservice student teachers. An examination of preservice student teachers' own attachment experiences proves to be useful, for example in the context of mentalization-based supervision or reflective practice.

Numerical dosimetry ELF: accuracy of the method, variability of models and parameters, and the implication for quantifying guidelines

In situ electric fields and current densities are investigated by numerical simulations for exposure to ELF electric and magnetic fields. Computations are based on the finite-difference time-domain method (FDTD). The computational uncertainty is determined by comparison of analytical and numerical results and amounts to a worst-case expanded uncertainty (95% confidence interval) of +/-9.89 dB for both dosimetric quantities (E, J). Detailed investigations based on the Visible Human body model with a resolution of 2 mm show a strong influence of the tissue boundaries on the simulation results, which is caused by the numerical method. For the tissue specific in situ electric field and current density changes in excess of 10 dB are observed when comparing the results with and without evaluation of the dosimetric quantities at tissue boundaries. Moderate sensitivities with respect to tissue boundaries are observed only for low conductivity tissues when evaluating the in situ electric field whereas this behavior is observed for high conductivity tissues when evaluating the current density. For exposure to a 50 Hz magnetic field corresponding to the ICNIRP reference level, the simulated current density for central nervous system (CNS) tissue is in compliance with the ICNIRP guidelines. Exposure to a 50 Hz electric field may exceed the ICNIRP basic restriction for CNS tissue at least in a worst-case scenario (grounded human body, vertical electric field, tissue boundaries included for the evaluation of the current density). The in situ electric field is the more stable dosimetric quantity with respect to changes of the tissue conductivity of the Visible Human body model. The maximum conductivity sensitivity coefficient amounts to +122% for the current density whereas the maximum sensitivity coefficient for the in situ electric field is -20%. For electric field exposure the in situ electric field remains comparable (-6% to -4%), the averaged current density change ranges from -57% to -16% for the tissues under investigation. Magnetic field exposure of a scaled model of a five year old child leads to a decrease of the dosimetric quantities (J: -74% to -45%, E: -42% to -23%) compared to the Visible Human results.

Exposure setups for laboratory animals and volunteer studies using body-mounted antennas

For two different in vivo exposure setups body-mounted antenna systems have been designed. The first setup is designed for investigation of volunteers during simulated mobile phone usage. The setup consists of a dual-band antenna for GSM/WCDMA with enhanced carrying properties, which enables exposure for at least 8 h a day. The 10 g averaged localised SAR--normalised to an antenna input power of 1 W--measured in the flat phantom area of the SAM phantom amounts to 7.82 mW g(-1) (900 MHz) and 10.98 mW g(-1) (1966 MHz). The second exposure setup is used for a laboratory behavioural study on rats. The design goal was a localised, well-defined SAR distribution inside the animals' heads at 900 MHz. To fulfil the biological requirements, a loop antenna was developed. For tissues around the ears, a localised SAR value of 50.12 W kg(-1) averaged over a mass of 2.2 g for an antenna input power of 1 W is obtained.